How to Build a Bicycle Generator.About:My name is AbelMathews. I'm a high school student.I like to make Electronics and robotics projects.Today I'm going to make a Bicycle Generator.So let's Start.The intention of this project is to build a straight forward human powered generator from a used bicycle and to use it to power light bulbs, blenders, cell phones, laptops, and other small appliances. This project will help one develop engineering skills while learning about a clean way of generating electricity.The project was created as part of Infrastructure Academy's environmental technology curriculum for high school students, so it is intended to be both achievable and affordable.Before continuing with the actual bicycle generator, one should understand how it works, and the components that make it up. View the PowerPoint presentation before moving on to the next step.PartsTools- 2" X 4" Wood- Wrench- V-belt- Saw- Diode- Wood screws or nails- Battery- Hammer or Screwdriver- Inverter- Tape Measure- Wire- Screwdriver- Motor (12-V or higher)- Perforated plumbers steelNote: The bicycle generator could be accomplished by skipping steps 5, 6, 7, and 8, to save money, but connecting anything other than a halogen lamp directly to the motor is not recommended due to the varying voltages.Obtain a bicycle and remove the back tyre.You will need to unscrew the back rim to remove the tire and tube. Since the only part of the bicycle that needs to work is the chain and pedals, a junk bike or an old used bike would work just fine.Build a stand to elevate the bicycle off the ground.The design of the stand is completely up to you. A few examples are shown below. Just be sure that the stand keeps the bike elevated and secure. If your bike has pegs attached to it, make sure your stand accommodates that feature.The stand should be built so that the rear wheel of the bike is about 5-7 inches off the ground. The dimensions of your stand will be specific to your bike.Before beginning construction of the stand, be sure to draft a design with appropriate dimensions. A design on paper will save time and prevent mistakes.Attach the drive belt along the back rim.A drive belt can be purchased at any auto parts store. You will need to remove the back rim to attach it. Make sure to measure the distance from the motor to the rim so you obtain the appropriate size.Attach the motor to the stand.A 12-volt DC motor or higher is recommended. The wattage of the motor depends on what you want to power. The motor should be securely mounted to the stand. Mount the motor at a distance that will tightly secure the drive belt on the motor shaft. The belt and motor shaft should spin concurrently – make sure there is no slipping between them.Place a diode in series with the motor and battery.Make sure the diode is only allowing current to flow from the motor to the battery. The cathode should be pointing towards the positive terminal of the battery.Connect the diode to the battery.The battery should be connected in series with the motor and diode. The negative lead form the motor should attach to the negative terminal of the battery. The positive lead from the motor should be attached to the diode, and the diode to the positive terminal of the battery.Connects the battery lead to Inverter.You could use an adapter to connect the battery to the inverter, or you will need to solder or tape the battery’s leads to the inverter so the circuit is secure. Be sure to correctly connect the positive and negative terminals of the battery to the inverter or you will blow the fuse in the inverter.Plug your appliances to the inverter.Once the motor is secured to the belt, you will need to use a multimeter to measure how much voltage is being exerted while you pedal. Depending on how much you exert, you will be able to power small appliances. With the knowledge you’ve gained, try to make changes that will make your generator better and more efficient.Fun IdeasHere are just a few suggestions to what you can do using your new bicycle generator.Charge your phone and exercise: Ever charged your phone and just waited until it was done charging? Why not get a workout and charge it at the same time! See how much time it takes to charge your phone. Try to set a time and try to beat it in the future.Human-Powered Smoothie: Think you can make a smoothie without wasting energy in your home? See if you can generate enough energy in your bicycle generator to run a blender. Then, see if the blender has enough power to make a smoothie.Eco-Breakfast: If you are the type of person who wakes up in the morning wanting to exercise, then try this. Use the bicycle generator to make some waffles and toast. There’s nothing like building up an appetite, exercising, and cooking at the same time.Think about some more fun ideas you can execute using the generator and test them out!

About the teamRace UP is the Formula SAE Team of the University of Padova.Every year we set the ambitious goal of conceiving and producing from scratch two cars (the electric one and the internal combustion one) that can compete against those from the best Universities around the world in this international competitive automotive contest. Thanks to the nature of this project and our approach to work, we redefine the very concept of university education. In our history, we have gained many important awards, guaranteeing excellent visibility to our sponsors and balancing their needs with professionalism. About the projectRace UP Team commits every year to innovate and challenges itself through the competitive project of Formula SAE, an academic automotive contest within an international environment.This idea has been developed and runs within and thanks to the University of Padua that stimulates and trains students from all over Italy.Our team every year competes against the best universities from all over the world, and in its recent history has won numerous and major prizes. Throughout its history and its acknowledgements, the Team has been able to guarantee an excellent exposure towards its sponsors, managing their requests with rigor and professionality. About PCBWayMost of our boards are custom developed by us in order to keep the size and weight to the minimum. Thanks to their price, speed /p>relyability PCBWay is our pcb manufacturer of choiche to supply us during the crucial phases of prototyping and developing of the control electronics and safety systems of our singleseaters.

Who we are ? Selcuk University Hangar Rocket Team was founded in 2019 and consists of volunteer students doing research on rocket technologies. Since the first year it was founded, it has carried out detailed research on GPS systems and conducted R&D studies in order to innovate in terrestrial positioning and global positioning systems. After participating in the Teknofest 2021 competition with the Hangar Rocket Team in 2020, we established our other team, the Techdawn Target Rocket Team, in 2021 with the experience and knowledge we gained. By enlarging our team, we adopt the philosophy of sharing information as a systematic and open source, and we continue our work in this direction. We accept our vision and mission as contributing to the development and dissemination of rocket technologies by testing the theoretical knowledge we have acquired on rocket technologies. As Hangar Rocket Team and Techdawn Target Rocket Team, we continue our preparations for Teknofest 2022 Rocket Competition. We completed our research quickly in the light of the experience and knowledge we have gained over the past years. Our rockets: Our avionics systems:

Who We AreIstanbul Technical University Electric Vehicle Team, established in 2014 and composed of volunteer students from diverse disciplines. The main purposes of ITU Electric Vehicle Team are adding value to our country in the future by supporting engineer candidates and represent our country in both national and international tournaments. Our ultimate goal is to represent our country and university in the best way and to make them proud with our achievements in the possible competitions.Our team, with team spirit and hard work, ensures both prospective engineer students at our school can take an active part in R&D studies and putting their theoretical knowledge into practice.We carry out our studies in ITU Electrical Machines Laboratory.The Races We Are InShell Eco MarathonIt is the world’s most widespread international innovation competition, held annually in the Americas, Europe and Asia. We will compete in the Urban (City Car) concept in the Shell Eco-Marathon Netherlands 2022.Teknofest International Efficiency ChallengeIt is an aviation, technology and space technology festival held in Turkey. There are 21 different racing categories. The category we participate in is the International Efficiency Challenge Electric Vehicle Races category.In both Shell Eco-Marathon and Teknofest International Efficiency Challenge, which are built on the relationship between energy and efficiency, the vehicle and university that reaches the sufficient number of laps and manages to cover this distance with the least energy be the winners of the competition. Our GoalOur mission is to produce the most efficient electric vehicles both in Shell Eco Marathon and Teknofest International Efficiency Challenge and taking the first place in both the Shell-Eco Marathon Netherlands 2022 and Teknofest International Efficiency Challenge.Some of Our PCB ProjectsFront Control Unit (Circuit)The purposes of this circuit are instant reading of the buttons, brake and gas data on the dashboard and transferring them to the motor driver appropriately, correct operation of turn signals, headlights and display screen and supplying power for the wiper and horn to operate. It contains 12V power input port, different voltage regulators, CANBUS IC to provide communication between circuits, relays and relay drivers etc.Rear Control Unit (Circuit)The main purpose of this circuit is to supply power to some of the units: RF module, battery management system, front control unit and headlights etc. Communication between ground and other circuits is also provided through this circuit. It contains power input ports, voltage regulators, CANBUS integrated circuits, relay drivers and drivers to feed headlights and signal signs.Insulation Monitoring Unit (Circuit)Our isolation monitoring circuit is works by detecting the changes in insulation resistance between the + or - terminal of the battery and the chassis of our vehicle. When the measured resistance value falls below a certain level, an audible and visual warning will be sent to the driver via the flasher and instrument panel, indicating the loss of insulation.BLDC Motor DriverOur BLDC motor driver circuit works by powering phases one by one at high frequencies. It can handle up to 5KW output and works with 100V battery. For communication with other circuits, we are using CANBUS IC. With its embedded software, rpm, current etc. can be observed.Telemetry UnitOur telemetry circuit consists of RF module, gps module, regulators, CANBUS IC and other circuit components.

McMaster Baja RacingTeam InformationMcMaster Baja Racing Team is a group of devoted undergraduate students at McMaster University who work together to compete in the SAE Baja Series. Competition InformationThe team is tasked each year to design, build, test and race a small off-road vehicle, which must endure a variety of dynamic events and a four hour endurance race on a track designed for severe punishment to test the abilities and durability of the vehicle.PCB InformationThis year we are designing our first every data acquisition PCB. The goal of this PCB is to compile data about the car from a variety of sensors and save them onto an SD card. The data we acquire includes GPS information, IMU information, primary and secondary RPM, CVT temperature. This PCB also includes headers for 3 status LEDs, 1 power switch and a steering wheel mounted heads up display. This board is powered through a external LiPO battery.

Dear pcbway,My name is Grigorios Kotsakis and i am reaching out to you as a member of UoP racing team. We are a greek formula student team established in 2002 under the supervision of Laboratory for Manufacturing systems and Automation of University of Patras. Our team designs, analyzes and fabricates it’s very own high-performance racecars that compete in the Formula Student series around the globe, alongside hundreds of teams from all over the world. Being the first formula student team in Greece and the first one to create an all-electric car we can assure you that while we are team of young people driven by pure passion and enthusiasm, we have inherited the experience from our predecessor to maintain the team at a top level. In our long run we always had people and partners that recognized and admired our will for excellence and innovation and for those reasons choose to support us with their funds, products, or services. In our search to expand and update our network of partners, we came across your company and understood that your are driven by the very same values our team is built on. This is why we would like to ask you to be part of our effort and help us achieve our goals by providing us with your expert skills in custom pcb making. With over 20 unique custom designed pcbs by our team it is clear why a pattern like you is of great essence to us. Thank you in advance and we hope to hear from you soon.Kind regards,Grigorios Kotsakis

The TeamMore than dots in spaceSpaceDot is a non-profit, volunteering and interdisciplinary student team, supported by the Aristotle University of Thessaloniki (AUTh). The team was founded in December 2020 and consists of more than 80 students from AUTh and other universities across Greece and Europe.Our goal is to pave the way for innovative research on space applications. We strive to actively support making space more accessible for the broad scientific and academic community as well as the general public. To achieve this, we are defined by an open-access, open-source philosophy; all experiment results, code, schematics and knowledge gained are available for anyone to use.We believe and invest in the potential of Greece to constitute an incubator of space research. This is why we pursue the advancement of space engineering in our country through the organisation of educational activities and the expansion of relationships between academia and industry, while aiding in establishing the first space institute in Thessaloniki.On the journey to accomplish all of the above, we are passionate about our highly collaborative work, active involvement and occasional tsipouro evenings. Because at the end of the day ...if it's not fun, why bother?The ProjectAcubeSAT is a multidisciplinary project by SpaceDot, a team led by ambitious students and researchers primarily from the Aristotle University of Thessaloniki. The space mission is realized with the support of the European Space Agency (ESA) Educational Office. The team is one of the three accepted in the “Fly Your Satellite! 3” ESA programme. We are part of the Fly Your Satellite! programme, a dedicated programme of the European Space Agency enabling, mainly through training and financial support, the more than 2500 nanosatellites flown into space, only 7 were destined to study a system of biological nature. None of them was realized through a European endeavor.Our ExperimentThe nanosatellite currently designed by AcubeSAT will have an in-house built pressurized vessel containing a microscopic assay and a lab-on-a-chip, able to sustain yeast Saccharomyces cerevisiae growth, in order to probe the effects of radiation and microgravity conditions in low Earth orbit.

Hello my name is Arda I'm a student also a electronics hobbyist.The project currently I'm working on a modular test equipment (you can check updates about it from my twitter link down below) that has RS-232 pc connection for custom software controls. But because there is going to be something around 100V max. on the test equipment I don't want to fry my pc if any faults happen in the euipment. So I designed this Isolated UART to RS-232 Communication Module. At the end the module we have is a 53.3mm x 40.6mm breadboard friendly isolated UART to RS-232 converter module that can be used to control things like DIN rail mounted industrial equipment some kind of truck scales. It isolates UART with 3 DIP-8 package 6N165 high speed opto-isolators. Then it converts already isolated UART to RS-232. Based on my calculations I can confirm that this module can work on least 9600 baud rate.Assembly TipSolder SMD components before the THT components!SchematicBill Of MaterialsC1,C2,C3,C4 1uF 0805 capacitorC5 10uF 0805 capacitorR1,R2 10K 0805 resistorR3,R4 1K 0805 resistorU1 B0505S-1W isolated DC-DC converterU2,U3 6N135 Opto-isolatorU4 SOIC-16 MAX3232 RS-232 Converter ChipU5(3.3V) SOT-223 3.3V AMS1117 Voltage RegulatorThanks to PCBWAY and their employees for great customer service and support for students like me to get sponsored pcb's.You can contact and follow me from;E-mail: arbildikda@gmail.comYoutube: https://www.youtube.com/channel/UCI88RenozSfDrH9fCR6AzvgTwitter: @arda_bildik link to profile: https://twitter.com/arda_bildik

Biga Bilim ve Sanat Merkezi is a school where gifted individuals are educated. In our school, our students are trained to develop skills in all areas from electronics to robotics, from art to culture.In this project, we designed a Atmega328 based card which has builtin AT24C32 EEPROM and DS1307 RTC chip. After all production processes are completed, we will provide detailed images and soldering progress about the card. However, you can still find the card's design, gerber and BOM list on out Github repository.We would be very happy if you support us, our children and our school. Thanks.Biga Bilim ve Sanat Merkezi

Hello my name is Arda I'm a student also a electronics hobbyist.One of my last projects (which I used my relay module with feedback. check it out --> https://www.pcbway.com/project/shareproject/Relay_Module_With_Onboard_Feedback_System.html) required a small form factor esp8266 breakout module but I wasn't able to find the size I need. So I designed it myself! At the end the breakout module we have is a 40mm x 33mm esp8266 breakout board with ftdi header for programming, ams1117 voltage regulator for esp8266, reset and flash buttons for the programming and it has a cutout in the pcb for the wifi antenna.This is a revised version of the real design (which had few problems like it wasn't breadboard friendly) but even the first design turned out perfect thanks to the PCBWAY's pcb production service.Assembly TipSolder SMD components before the THT components!Bill Of MaterialsC1,C2 100uF 0805FLASH1,RST1 KEY-SMD_4P 6x6R4,R5,R6,R7,R8 10K 0805 R11 220K 0805R29 100K 0805U1 ESP-12F U2 3.3 AMS1115You can contact and follow me from;E-mail: arbildikda@gmail.comYoutube: https://www.youtube.com/channel/UCI88RenozSfDrH9fCR6AzvgTwitter: @arda_bildik link to profile: https://twitter.com/arda_bildik

QUT Motorsport is an Australian Formula SAE team competing in the Formula SAE-A competition. Our Team is composed of students from a diverse field of degrees with a strong presence in engineering and business. Our project is to design, manufacture, manage, and market a single seater, electric race car for the FSAE-A competition. QEV-3 Electrical System UpgradeAfter taking QEV-3 to competition at the end of 2020, the team set about iterating on its electrical system in the pursuit of reliability and ease of maintenance. Our existing system had a complex harness running from a single point, where quite often wires would run from the front to the rear of the car due to the placement of a single board. With this in light, the team set about designing a series of smaller 'Vehicle Control Units' which distributed sensor reading and control around the vehicle, all tied together on a single 12V and CAN communication bus, significantly simplifying the harness and making spares easier. Vehicle Control Unit Rev CThe VCU is the brains of the car, with several PCBs distributed throughout sitting on the canbus. These boards are capable of driving fans, pumps and other 12V devices through a 2 channel PROFET, reading 5V sensors through an ADC, as well as reading NTC thermistors and driving LEDs through a 0-30mA current steering source. After building two revs, the board is now in a state where Rev C will be tested and go into production.Rev A VCURev C VCUSteering Wheel Rev BThe steering wheel PCB sits within the steering wheel, reading the state of 4 buttons and 3 potentiometers, allowing the driver to change inputs to the car. It also has a screen to display critical information to the driver including battery state of charge and temperatures of vehicle components. EBS ControllerThe EBS controller interfaces to a VCU, and to the driverless emergency brake system, allowing a VCU to control and test the status of the emergency brake system before autonomous driving can commence. It also interfaces with the output of the shutdown safety loop in the car to trip the emergency brake in a shutdown situation.Shutdown BoardOur shutdown board interfaces all shutdown segments of our vehicle back to one latching point, allowing any safety-critical system or e-stop to latch off the vehicle in a shutdown situation. This board then uses a DAC to convert the binary segment statuses into 4 analog pins that a vehicle control unit (VCU) can read to determine which segment has tripped the shutdown system.Battery Management Unit (BMU) Rev COur battery management unit, or BMU, interfaces with the cell monitoring units on an RS485 bus, receiving critical cell temperature and voltage information. In a state where any of these values are bad, it safely shuts the car down and trips the shutdown loop. The BMU also controls vehicle contactors, connecting the battery to the vehicle. The Rev B BMU is still in the design stages.Cell Monitoring Unit (CMU)The cell monitoring unit (previously BMS), measures the voltage and temperature of each battery cell to ensure they are within a safe range. It also balances the cells through the use of bleed resistors. Significant research was pursued into Kalman filtering to accurately estimate the state of charge SoC of our Lithium Iron Phosphate (LiFePO4) battery cells. We are now developing a new revision of these to improve reliability and simplify complexity. Motor Controller Isolation Interface (MCISO)The motor controllers used by the team in QEV-3 do not feature any galvanic isolation between the power stage and control stage. As a requirement of the competition, these systems must be galvanically isolated to ensure the safety of the driver. The MCISO was designed to isolate the vehicle CANbus into an isolated motor controller canbus to allow the VCUs to send motor commands. TSAL ControlThe TSAL control PCB uses a comparator to compare the tractive system voltage to a known reference voltage, and then isolates this signal back to some control logic and a 555 to enable a flashing red 'tractive system active light'. Future revisions of this PCB will integrate LED drivers and lower BOM cost in other areas.

It is the hydrogen-powered vehicle project of Eskişehir Technical University. It was established in 2007 and is a 15-year project. It has shown that it is one of the leading universities in Turkey in the field of alternative energy vehicle projects. It has a team of all volunteer Engineering students. The departments of the students consist of Materials Science and Engineering, Electrical and Electronics Engineering, Industrial Engineering, Computer Engineering, Chemical Engineering and Mechanical Engineering.Until now, it has achieved success in Shell Eco-Marathon events and Tübitak Efficiency Challenge races since 2008.MISSIONTo increase and spread the use of hydrogen as an alternative energy source in our country and in the world. For this, to be a group that is perfectly based on both national and international projects by doing better each time.VISIONOur project is based on the principle of sharing the tasks on the basis of division of labour and working with research and development to put forward the most perfect project. In this way, it is to contribute to the use of hydrogen in daily life and to have a cleaner world. In order to realize this vision, our team aims to be a group that has constantly developed and made its name known to everyone in its field.OUR RACESShell Eco-Marathon Held for 36 years, Shell Eco-Marathon is one of the world's most widespread student innovation competitions in Europe, America and Asia every year. Within the scope of the competition, high school and university students compete to cover the longest distance with the least energy with the energy-saving vehicles they designed and produced. Within the scope of the competition, the teams that make the most progress thanks to their creative designs and technical knowledge are rewarded.Tübitak Efficiency ChallengeEfficiency Challenge Electric Vehicle has been carried out every year by TUBITAK for university students since 2005. Organized in different categories.With race organizations, it is aimed to increase the domestic production of vehicles working with alternative energy and to develop products with high added value, to have the opportunity to research alternative energies, to follow the developments in the world, to gain experience, and to raise awareness throughout the country on the use of alternative energy sources.2021 TEKNOFEST Efficiency Challenge DORLION VehicleOur Dorlion vehicle, which we developed in 2021, was produced locally in our workshop with chassis and shell design, engine, motor driver, communication system, battery management system, steering mechanism, door lock and hinge mechanism and many other functional and visual parts. started to compete.Contact:Website: https://hidroana.com/E-mail: info@hidroana.comInstagram: @hidroanaLinkedIn: @hidroanaFacebook: @hidroana

The battery mobile team was founded in 2014 by Afyon Kocatepe University Electric. In the engineering department, Prof. Dr. Under the leadership of Fatih Onur HOCAOĞLU was established. Afyon Kocatepe University's first electric vehicle was launched in 2015. Electrical Engineering, Automotive Engineering lecturers and students successfully produced. Eye of the 2015 Efficiency Challenge Our vehicle, which has a baby, received the Domestic Incentive Award. Our team, which is not satisfied with success after the competition, has gained xperience and started to produce a new vehicle for the 2016 Efficiency Challenge with hardware. Our vehicle, which was again met with great interest in the racing area, participated in the 2016 races. It has been awarded the Design Award.After a long time, Prof. Dr. Fatih Onur HOCAOGLU under the supervision of Lecturer and See. Our new vehicle under the leadership of Ahmet KAYSAL we produced. In the pandemic conditions of the world and our country Our vehicle has been qualified to participate in the competition. the biggest here Our success is that no one in our team has a previous experience. was not. Despite this, a well-established company that has participated in the race for years. We left the universities behind. To 2021 TÜBİTAK Efficiency Challenge Electric Vehicle Races "FRIG VEGA", which we designed and produced as AKÜMOBİL team, We completed the races as the 15th by taking part in the track with our vehicle. “Promotion and In the races where we were deemed worthy of the “Dissemination Incentive” award, the main The two electronic equipment in the category are the battery management system and the built-in charging unit, vehicle control system from the equipment in the subcategory, telemetry system, isolation monitoring system and battery packaging TÜBİTAK It was accepted as a domestic design by.You can follow us on social media. Instagram: https://www.instagram.com/akumobilteam/

Circuito amplificador de potencia con puente cuádruple (puente) para uso automotriz con CI TDA7850 o equivalente TDA7384 TDA7385 TDA7386 TDA7388, TB2929HQ, TB2926HQ, TB2929HQ, TB2929HQ, TA82624H, TA8262, LV4700.El TDA7850 es un amplificador de potencia de audio de clase AB que utiliza MOSFET en paquete Flexiwatt 25 y está diseñado para usarse en amplificadores de automóviles.CaracterísticasEtapa de potencia de salida MOSFETFunciona bien con cargas de 2 ΩDistorsión de clase de alta fidelidadbajo ruido de salidaFunción de silencio y esperaAuto mute al detectar el voltaje de suministro mínimoRequiere pocos componentes externosGanancia fija interna (26 dB)Sin compensación externaSin condensadores de arranqueCortocircuito de protección de salida a GND, a Vs, a través de la cargaDetección de compensación de CC de salidabatería invertidaSi usa el TDA7850 tendrá hasta 50W <0.015%THD por canal, para el TDA7388 <0.1%THD hasta 45W por canal, para los demás chips compatibles vea la descripción.En este proyecto utilizamos una PCB de tamaño reducido y con componentes mínimos. Con opción para una cara o doble cara.Visite https://www.te1.com.br/2019/06/circuito-amplificador-com-ci-tda7850-tda7388-ou-equivalente/

The teamRockÉTS is a rocketry science club at École de Technologie Supérieure. The club has more than 40 students from all engineering branches that are passionate about space and science. RockÉTS's mission is to share our knowledge, as well as our motivation to everyone around us. To make this happen, we participate in several events and gatherings for all different age and interest groups.More importantly, we represent ÉTS at the annual Spaceport America Cup competition. This competition takes place in Las Cruces, New Mexico, in the beginning of June. During this event, we share and celebrate the work done throughout the year with other rocketry clubs from around the world and anyone who are interested in seeing an aerospace show. Finally, RockÉTS is proud to contribute to the development of the future aerospace industry. We seek to push our limits and continue our journey with advancements with the help from our partners. The ProjectRockÉTS has always been a leader in avionics systems and this year we plan to keep improving our concepts and develop better systems. Our Avionics bay, nicknamed Anirniq meaning breath of life in Inuktitut, is fully modular and consists of up to 7 modules, currently 5, and a back-plane which enables a flexible configuration that can be upgraded. The whole system is assembled with a 3D printed housing to allow it to be easily placed in a rocket.Our circuit boardsBackplaneThis board is the backbone of our entire system and acts as a communication and power bus between all of our modules and is the reception board for each of our modular boards that follow our proprietary form factor. This board also has a party mode which will illuminate RGBs after a successful flight as shown above.AcquisitionData acquisition is crucial to a successful rocket launch. This board uses an Xsens MTi-7 inertial measurement unit which uses advanced sensor fusion algorithms to synchronize the inputs from the module’s on-board accelerometer, gyroscope and magnetometer with the data from an external GNSS receiver and/or barometer. The raw sensor signals are combined, and processed at a high data rate, to produce a real-time data stream with the device’s 3D position, velocity and orientation.ArmingThe arming board allows us to activate the avionics telemetry system, ejection charges, and COTS altimeter from a distance when the rocket is on the launch pad using a bluetooth Android device. This is an added security feature that is very important to allow us to safety activate and launch our rocket.CommunicationOnboard telemetry is great, but being able to see the rocket information and trajectory in real time from the ground is paramount to success in a high octane competition. This board connects to an external RFD900x radio transceiver module which relays the data stream of information to our ground station team.MissionThe mission board is critical to the flight and controls all of the staging and separation charges found in our rocket. This board can be modified from project to project depending on the mission of the rocket and the different charges or payloads which may be present that year.PSUThe PSU board is extremely important since it is the power source for all of the other modular boards in the system. This board converts our battery pack voltage of 7.4v into nominal 5v and 3.3v channels that are then used to power everything else.

Sun Devil Rocketry:Sun Devil Rocketry, Arizona State University's oldest rocketry student organization, helps prepare students to become leaders in aerospace through meaningful projects, interactions, and experiences. Our members have the opportunity to explore and make contributions to solid, liquid, and hybrid rocket propulsion research and development. In addition, our members design, manufacture, and launch high-power rockets for competitive and experimental purposes. Our award-winning outreach program exposes hundreds of K-12 students to rocketry each year. Contact us to learn more about how you can become better prepared for industry and graduate school through applied projects.Liquid Propulsion Research: With the recent successes of commercial spaceflight, university students have become increasingly interested in acquiring the skills and know-how to better contribute to the development of liquid propulsion systems in industry and academia. However, no program at ASU currently exists to provide the type of hands-on education that fully exposes students to the intricacies of liquid propulsion systems. To create such an industry-relevant and educational environment, the liquid propulsion team set out in fall of 2019 to design, manufacture, and test a liquid rocket engine from the ground up.Efforts to build the liquid engine have been organized into four areas. These are project management, engine development, ground support equipment, and testing operations. Technical development is coordinated with three subteams, namely propulsion, avionics, and structures. While the propulsion subteam is mainly involved in engine development, the avionics and structures subteam are mostly responsible for the integration of associated infrastructure.Combustion Chamber and Injector AssemblyPropellant Feed System Plumbing and Instrumentation Diagram (P&ID)Liquid Propulsion Avionics: Due to the complexities inherent in the propellant feed systems of liquid propulsion systems, Sun Devil Rocketry’s liquid engine project requires a semi-autonomous avionics system that can execute engine sequences with precise timing, wirelessly communicate with a ground station command and control computer, record and log sensor data, and manage electronic power systems such as ignition circuitry, solenoid drivers, and servo motor actuators. To accomplish this, the Sun Devil Rocketry Avionics team has designed a number of PCBs that are designed specifically for use in propulsion systems. These include an engine controller, valve controller, a ground station unit, a photogate valve-calibration sensor, and a pressure transducer differential output amplifier.Liquid Engine Controller: The Liquids Engine Controller PCB is the main embedded processor of SDR's Liquid Engine. The Controller is equipped with an STM32 ARM Cortex M7 processor and 4Mb of external flash for data logging. The board includes a micro-SD card jack for easy access to the logged data. The board includes many power sources for flexible use of the controller during testing and normal operation. These include a 12V power jack, a USB Type B connector, and female header pins which are regulated down to 5V and 3.3V with a buck converter and linear regulator power supply. The board includes a UART to USB transceiver for easy PC interfacing. The screw terminals on the board connect to the ignition wires, consisting of an ignition e-match and two continuity wires. The board supplies 2A to the ignition e-match using a power MOSFET, and the continuity wires provide feedback to the controller on the status of the solid propellant slug and main propellant ignition statuses. Additionally, the board includes a reset button and several LEDs for visual indication of the power and firmware status of the controller.Liquid Engine Controller CADFuture revisions of the board will include an RGB status LED, a wireless transceiver for communicating with the ground station computer, a thermocouple amplifier, and connectors for attaching pressure transducers. Valve Controller: The liquid engine's valve controller (L0005) contains the processor responsible for managing valve actuation commands issued by the liquid engine controller (L0002). The board contains opto-isolated solid state relays for solenoid actuation and a pulse width modulation interface for issuing stepper motor commands that initiate actuation of the liquid engine's main propellant valves. The board contains an NXP ARM Cortex-M4 microcontroller for processing, programmed using a J-Link with a 20-pin IDC cable connection. The board is powered from the 5V buck converter on L0002, which is also used to power the photogate sensors used for valve position calibration. In order to allow the controller to know the true actuation state of the solenoids even in the event of a power failure, the board contains an AC power supply monitoring circuit which produces an indication signal read by the MCU when AC power is available for solenoid actuation.Valve Controller CADPhotogate:The photogate board functions as an optical sensor for calibrating the absolute position of stepper motors upon controller startup (L0005). The photogate is mounted on the stepper motor adjacent to the motor shaft, which is coupled to the stem of a ball-valve used as the main propellant valve in SDR's liquid engine. The photogate uses an infrared LED to produce an optical signal on the infrared-sensitive phototransistor surface. The board has a characteristic U-shape that allows a small standoff strut on the motor coupler to block the optical path of the sensor when the valve reaches the closed position.Photogate CADInstrumentation Amplifier:The instrumentation amplifier IC uses an adjustable gain differential amplifier with buffered inputs to amplify the readings from an analog sensor using a wheatstone bridge such as a load cell or pressure transducer. The amplifier supply voltage was chosen to match that of the pressure transducers it is intended to be used with. Instrumentation Amplifier CADGround Station Computer: The ground station computer allows Sun Devil Rocketry engineers to remotely interface with the engine hardware. The computer consists of a Raspberry Pi with an external wireless interface that issues commands to the liquid engine controller. The computer runs a GUI program that is developed entirely by the Sun Devil Rocketry Avionics team, which provides visualization of the current engine state and allows the test operations engineer to send commands to the engine controller. Ground Station Computer GUI