We are Swissloop Tunneling, a student initiative at ETH Zurich (www.swisslooptunneling.ch). We were the only Swiss team to have won, with our tunnel boring machine “GROUNDHOG ALPHA”, the second place prize as well as the Design and Innovation Award at Elon Musk’s Not-a-Boring Competition in Las Vegas in September 2021. We are now looking for potential partners to support us in our efforts to continue revolutionising the tunneling industry.We are building a tunnel boring machine that can create a self-supporting tunnel structure. This should enable the Hyperloop concept to become feasible in the future, which can only be achieved if tunnels can be built in a fast and cheap manner.With your support, you can bring us a significant step closer to our goals.These would be:1. Participation in the Elon Musk Competition (Not a Boring Competition Part 2, Summer 2022) in the USA.2. Digging Event in Switzerland (trade fair presentation, demonstration of tunnel boring machine, with partner stands)3. Improving the machine (replacing subsystems of the machine and implementing new parts & systems)Your partnership in particular, would allow us to redesign and significantly improve our current electrical systems.Our current system is made up of five subsystem PCBs (that are used to interface several subsystems on our tunnel boring machine), the main unit PCB (for overall control and communication), and the starting area unit PCB (for interfaces not directly on the tunnel boring machine, but rather with the operators in the starting area). The main unit is controlled by a Raspberry Pi 4, and each of the embedded subsystem PCBs are interfaced with a Raspberry Pi Pico. For a more detailed overview of our current machine, please see the attached documentation.With the upcoming iteration, we will be refactoring our electrical systems and making them more simple and robust by replacing the five unique subsystem PCBs with a single modular design with an integrated RP2040 chip that can be used across all subsystems. We would also be simplifying and refactoring our Main and Starting Area Unit PCB designs.For this, we will need our new custom PCB designs to be manufactured, assembled, and we would also be looking to secure our PCBs inside a custom watertight enclosure. With this, we would love to collaborate with you and form a partnership in order to make this a reality.

INTRO :-we have made a 5.1 Channel Amplifier Board using TDA7294 Audio Amplifier ICs. On a single board, there's a 5.1 channel amplifier circuit using 7x IC's (TDA7294) out of which 5 IC's are used as single ended (90w at 4ohm each) and 2 IC's are used in bridged configuration (170w at 8 ohm) for subwoofer channel. Each channel has it's own input and output. This board has very heavy heatsink that is recommended for cooling of these 7 IC's and also There's a FAN mounted onto the PCB with it's own 12V regulated power supply circuit. This board also has inbuilt Rectifier dual supply with 22000uF/63V capacitor on each rail and with fuse protection. The board requires 20-0-20VAC to 24-0-24 VAC Transformer to operate optimally.Link to the Build video is also provided here.**The IC used in this project is TDA7294 , which is Hi-Fi Class AB Audio Amplifier IC. Refer it's Datasheet for more details :- https://www.st.com/resource/en/datasheet/tda7294.pdfWe decided to make this project because there are lot of people who do DIY audio but when they look in the market or online, they don't find any good amplifier board which is 5.1 channel on a single PCB with inbuilt rectifier supply, heatsink, fan etc. People usually find mono or stereo amplifier boards and even though they find 5.1 channel amplifier board, the amplifier quality is not upto the mark. So we designed this board that delivers 90w at 4 ohms per channel for 5 channels and 170 watts at 8 ohms for subwoofer channel with practically very low noise and distortion. This concept works perfectly with using these following 4 items only :-1) TDA7294 5.1 channel Amplifier Board2) 5.1 Prologic Decoder board3) A Compatible 24-0-24VAC Transformer (800VA-1000VA)4) An Amplifier CabinetBy using these 4 items only, one can make an excellent sounding 5.1 Channel Complete Amplifier.Steps for building the Amplifier Board :-1) First step is to get the PCB. Here' you can either Make PCB yourself by DIY method (Ironing Method). The PCB design is kept single layer only due to simplicity of making of PCB, OR, you can get the readymade excellent quality PCBs from PCBway.2) After PCB, carefully mount all the small components like jumpers, resistors, diodes etc. on the PCB and trim their terminals and solder them on the PCB first because there are many components in this Board so, it's better to solder them few by few. 3) After mounting small components, mount big components on the PCB like Capacitors,fuse holders, rectifier and solder them. (Do not mount the Power Filtering Capacitors, 22000uF caps yet. that is to be done in the later step.)4) After that, now it's time to mount all the 7 IC's on the PCB and solder them.5) Now Mount the heatsink properly on the IC's by using insulating MICA and insulating shoulder washer. remember to use good thermal paste in between heatsink and ICs.6) After mounting all the IC's on the heatsink. Take a multimeter and check the Continuity between heatsink and IC's back plate. there should not be any continuity between them. All IC's should be insulated from Heatsink.7) Now Mount the cooling fan onto the PCB using cable tie or any other suitable method. The Board assembly is now completed. Clean the Track side of board with IPA (Isopropyl Alcohol) or cleaning flux and then power the board using 20-0-20 VAC transformer or 24-0-24 VAC transformer. Remember while turning on the board for the first time, it is highly recommended to use a series bulb circuit to protect the board for any other damage in case if the board has some issues like short circuit, wrong component placement, any Faulty IC etc. The series bulb would glow first then it turns off. Note here that, because this board has 7 IC's, and all are class AB amplifier IC's, each of them takes some current (approx 0.2A) at idle resulting in approx 1.2A to 1.5A current at idle for the entire board so as a result the series bulb would not completely turns off and rather stays on a little bit. You should definitely see the reduced brightness of the bulb that tells the board is running fine.Now check the input and output voltages of each of the channel. There should be approx. 0 voltage across inputs and outputs of every channel. Now Finally, you can connect the speakers to the amplifier board, Give input signal to it and listen to the music and appreciate your hard work and Accomplishment.

This is a partnership with Opiopan in order to complete a Garmin G1000 simulator that looks like the real deal for flying with Microsoft Flight Simulator 2020. I and Opiopan quite enjoy the game and this adds another realistic touch to the real deal and has a terrible proof of concept done for it. We intend to make it compatible with a Raspberry Pi to drive the electronics and communicate with a computer system which should reduce the strain on a Computer's GPU. Our proof-of-concept (as shown below) is actually quite good and looks pretty good even being a prototype. It functions *exactly* as G1000 and has the same functionalities and works in-game at the moment. It has 9 knobs (not all of them are the same) and 32 buttons. The case is FDM printed while the buttons are resin printed. The entire system is functional but like all projects, it needs to be cleaner :). We would like a sponsorship to make the PCB and buttons/knobs happen and maybe even open-source it!

About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula race car and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle race car.Temperature Sensor Extension Board:From the experience of the previous generation, we realized that we need a device for detecting battery temperature according to the Formula SAE specifications. This device is made to sense 24 thermistors each of which is a negative temperature coefficient (NTC). The NTC serves as a temperature sensor. This device can monitor 48 battery temperatures simultaneously. A multiplexer 4052 is used for the data distribution system that alternately transfers data reading from NTC to Arduino Nano which then determines whether the temperature exceeds the limit or not. The system uses an optoisolator to keep the device galvanically isolated between the modules according to Formula SAE rules. this system can be set to be Master Board and Slave Board. This board is then stacked to the BMS via Board-to-Board Connector.Words to PCBWay:As a team from the university, we have to build cars at very tight costs and must seek funding independently from companies that are generous to contribute to the development of our education-and-research-based car. If PCBWay were able to generously deigns to give donations in the form of PCB Manufacturing and PCB Assembly, we would be very grateful. These services will greatly assist the research of our team engineers and also contribute to the development of the team as a whole. In return for your kindness, we would be able to put your name and logo on our website, booklet, leaflet, banner, X-banner, and expose you to our followers on social media.Thank you for your consideration and any help you can provide. I look forward to hearing from you soon.

We are an aspiring electric vehicle racecar team from Pillai College of Engineering, Navi Mumbai. Pillai College of Engineering is one of the best Engineering colleges in Navi Mumbai, which has earned the autonomous status in November 2021. Our college is accredited A+ by the National Assessment and Accreditation Council (NAAC). Spark Racing Team is the first electric racecar team in Navi Mumbai.We are a student team, and to make a car like this, we surely need monetary funds. We are very passionate about building this car and continuing our legacy, but the only barrier to accomplish our goals are the funds required. It would be our honor to have a prestigious organization like yours onboard as a sponsor, and your help to a student team like ours to excel in this competition will give a great advantage to us. This can motivate a lot of young enthusiasts to participate in such competitions and eventually bring up the Formula Student Culture in India. The Formula Imperial 2022 will take place in Noida in the famous Buddh International Circuit. This will also benefit your organization. Pillai College’s annual college festival, Alegria- The Festival of Joy is the biggest college fest in Navi Mumbai. With a footfall of over 15,000-20,000, our car is showcased and promotions are done each and every year.The whole team is tirelessly working on the car for Formula Imperial 2022 and we are very optimistic about setting a mark high on the charts. We are anticipating a positive reply from your side.

Hello friends, in this blog I want to talk about a project that I have been developing in recent monthsIt is a pure sine wave inverter from the egs002 module with SPWM, this inverter can work from 12V to 48V with powers ranging from 600W to 12V up to 2400W at 48V, this power is RMS, the peak power of the inverter would be roughly twice the RMS power.That is, we will have approximately a power of 1200W at 12V and 4800W at 48V, this inverter works through an H bridge which connects the positive or negative at high frequency to generate a PWM wave with positive and negative peaks that finally through of a capacitor and a coil will smooth these pulses and it will become in a few words a sine wave.To obtain this power we must use mosfets of approximately 120 amps or more for each one, so that they can withstand the current peaks that is natural in high frequency and that it can work for long times, I also want to make special emphasis on the issue of cooling of this inverter since as many will know the temperature in the mosfets it is vitally important to know how much current they can conduct without causing damage, so it is very important to use a generous heatsink and if possible with active cooling.Having a good bank of capacitors is essential for the implementation of this class of inverters since they will prevent the high current peaks generated by the inverter from being assumed by the batteries that, if they are very small or of little capacity, will suffer shortening their useful life and also causing instabilities in the input voltage and therefore in the output voltage as well.To finish, I want to warn about the precautions that must be taken to put the project into operation and to obtain the desired power, mainly I would like to emphasize the cables to be used since we are working relatively at low voltage in the batteries, depending on the power that We will need to be circulating 40 amps or much more, that if the cable is very thin or is not of the necessary gauge it will overheat and can even burn, so you have to be very careful with it, on the other hand install a fuse or some type of safety switch for any unforeseen event is always very helpful and safe for our projects, especially if they have a lot of power, thank you very much for your attention.

About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula racecar and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle racecar.Pre-charge Discharge Board:Based on FSAE Rules, FSAE electric vehicle Race Cars must have both a precharge resistor to charge the battery’s power to a certain percentage when it is connected to the motor controller and a discharge resistor to slowly reduce the power within the motor controller when the tractive system has been shut down. The precharge and discharge resistors are parts of the electric vehicle’s tractive system. The precharge resistor is used to slowly decrease the current flowing from the battery while increasing its power until the power reaches a certain percentage before being directly connected to the motor controller through the accumulator isolation relays, while the discharge resistor is used to slowly reduce the power of the electrical current within the motor controller when the tractive system is being shut down so that the motor controller, the boards within the tractive system, and the people near the tractive system don’t experience any damage.We realized that the previous generations of the Arjuna EV Team placed the precharge resistor and the discharge resistor on different boards. This year, our team has managed to design a new board containing a resistor that serves the function of both a precharge resistor and a discharge resistor. For the precharge mechanism, we use a Comparator (LM321) which is connected to an RC circuit and a MOSFET (IR9540N) to serve as a timer for the accumulator isolation relay (AIR+) so that the AIR would only connect the battery and the motor controller (emDrive 500) after the voltage and current of the electrical current reach the percentage that our team has decided upon, while the AIR is open the current from the battery will flow into the resistor and will begin to charge up, therefore making the resistor serve the function of a precharge resistor. For the discharge mechanism, we use two relays (G2RL-2-DC12) to disconnect the motor controller from the battery and connect the motor controller only to the resistor, this is done so that the resistor will begin to serve as a discharge resistor to slowly reduce the current and voltage of the electrical current flowing within the motor controller with the help of the capacitor placed within the motor controller.

Team Kratos Racing is the Formula Student Team from Pimpri Chinchwad College of Engineering, Pune. We design, manufacture, and test an Electric Formula-Student Racecar, and actively participate in SAE and Formula Student events held internationally.Participation and Laurels:Since the inception of the team in 2015, it is growing each year as a team and performing better than the preceding year. To date, the team has designed and manufactured 8 cars that gained 40 awards across 9 competitions and have been the most successful team in India. After competing in the C.V category for 3 years, the team shifted to greener mobility and took a big step forward in designing the 1st Electric Vehicle and were regarded as the Overall Champions in the Electric Category of Formula Bharat 2019. In 2020, the Team again set a record of developing India's First Full Carbon Fibre Monocoque Chassis. In 2021, the Team participated in Formula Bharat 2021 Virtuals and was declared the overall champion of the event, with a special award of Best Battery Pack Design.Previous Project:Last year, the Team designed its Third Electric Racecar Prototype - Thunderblade 3.0 and competed in Formula Bharat Electric Virtuals 2021.The Power train specifications of last year project were:Maximum Tractive-system voltage: 470.4VDCNominal Tractive-system voltage: 414.4VDCControl-system voltage: 15VDCAccumulator configuration: 112s2pTotal Accumulator capacity: 28.44MJMotor type: Permanent Magnet Synchronous MotorNumber of motors: 1, Rear wheel driveMaximum combined motor power in kW: 68kWCurrent Project:Currently, the team is working on the manufacturing of Thunderblade 2.1. The objectives of Thunderblade 2.1 are to take a step towards integration of microcontroller in the ECU of the Vehicle and acquiring real-time data from the vehicle.Prototyping:After designing the GLVS (Ground low voltage system), various prototypes of circuits were tested in the college itself.After multiple iterations of circuits, the prototypes were manufactured:To PCBWay:It would be really grateful for us to partner with PCBWay. Since the very beginning, the team has been consistently delivering and learning from the failures to move forward. After competing in our nation for the past 6 years, the team has decided to participate in international competitions with teams across the globe. For this vision, Team Kratos Racing would request PCBWay for their extensive support in PCB manufacturing. We would request PCBWay to consider our request and be a vital pillar in our journey.#TOGETHERWERISE.

Tractive System Active Light – Arjuna EV Gadjah Mada University About Arjuna EV UGM:Arjuna EV UGM is a Formula SAE from the Gadjah Mada University planning to compete in Formula SAE Japan in the 2022 competition season. Formula SAE is an international competition for university students to develop a formula racecar and improve their engineer talents and skills. Arjuna EV UGM is a team of young and talented students building an electric vehicle racecar.TSAL Board:TSAL Board or Tractive System Active Light is an indicator for electric vehicle car that indicate the tractive system is active in high voltage or active in low voltage or even it’s off. When the tractive system is active in the low voltage (less than 60 VDC based on FSAE rules 2022), TSAL will illuminate into green color. When the tractive system is active in the high voltage (higher than 60 VDC based on FSAE rules 2022), TSAL will illuminate in to blink__ red color with a frequency of 3 Hz. When there is no voltage in the tractive system, the TSAL will be off.We used two regulators to change the voltage into 12 VDC, the relay to change the color from green to red, and then we used a timer circuit (with IC NE555) to make the red led blink__ with a frequency of 3 Hz.

we have developed this print for our non-profit organization that makes it possible to talk to a walkie-talkie all over the world we are expanding our services every day and currently we already have members in the Netherlands, Germany, Belgium and want these continue to expand the service on the basis of sponsors.Handyman* aims to connect analog and digital communication in an open domain and to raise radio communication to a higher level using existing and new techniques. This is how we keep this hobby alive and current.Activities take place on a non-profit basis.We do not charge a fee for the use of our website and it is accessible to everyone. We also build svxlink Raspberry repeaters and need support for this.

Hello everyoneWe're a team of engineering students at the Faculty of Engineering, Alexandria University, Egypt.We call ourselves "Aquaphoton Academy".Our goal is to annually build a new remotely operated underwater vehicle, with improvements over the previous years, in order to participate in the MATE ROV competition.The goal of the competition is to simulate ROVs that perform underwater missions that could endanger the lives of human divers, or be impossible to human divers altogether.With the help of our mentors and the endless support of PCBWay, our electrical system always turns out to be impeccable! Attached are 3D models of our boards.

I'm working to make an automatic on/off system of the water pump for a relative who's been having a ton of issues with this as they have to manually turn the motor on/off. They're aged hence the further motivation.I'll be utilizing the NC555 IC to be the brains of this operation. The concept is very simple and requires a few wires in the upper-level tank and underground tank that are used for detecting the water level.The circuit basically turns on the water pump (using a relay) when the underground tank's water level is adequate and upper tank has room for water. If the upper-level water tank doesn't have room for more water or if the underground tank doesn't have enough water, the water pump remains off.I've already made using the traditional method, however since there's a 220V AC input, it's not safe to be used by someone inexperienced.I'm a student currently taking a gap year and plans to pursue Mechatronics engineering and further automate things like those that are otherwise manually done in my city.

WHO WE AREThe PAC Baja team is an extension project that seeks to empower in a personal and professional level students from Unesp Bauru, by the means of management and construction of a baja project.WHAT IS BAJA?The SAE project is a competition between the Engineering Higher Education Institutions which challenges students through the project and development of a off-road vehicle, in the category Mini Baja. But, after all, what is a baja?Baja is a recreational, off the road, single-seater and robust prototype. The vehicle, in addition to having traction on its two rear wheels, is safe, easily transported and simple to maintain and operate. It must be able to overcome rough terrain in any weather condition, without showing damage and/or defects.OPERATIONThe PAC Baja team consists of 47 members from the majors of Civil, Electrical and Mechanical Engineering, Computer Science, Public Relations, Design and Psychology. The project is divided into two sectors: administrative and projects, which contain other sub-sectors, being administrative: Finance, Quality, People Management, Technology Innovation, Public Relations and Marketing. And projects: Data Acquisition, Structural Calculation, Chassis and Composites, Design, Electronics, Brake, PowerTrain and Suspension and Steering.Currently, the captain is Pedro Cosenza and the directors of the administration and projects sector are, respectively, Beatriz Marchesin and Gustavo Soares Silva. OUR CIRCUIT BOARDS Even though we are essentially a mechanical engineering project, we are highly dependent on electronic systems. On the race track, we need circuit boards in order to build a telemetry system and monitor our car needs, so we can always make the best decisions during the competition. Furthermore, even before the competitions, we need to ensure that our car behaves the way it was designed for, so we build circuit boards that help us run tests and validate our projects. DATA ACQUISITION MODULE It is a STM32 microcontroller-based system that allows the use of the sensors we need to run tests on our prototype. Through it, we can use inductive sensors, measure the rotation of the motor, get the readings of a load cell, use thermocouples and infrared temperature sensors to measure temperature from all sources, use accelerometers and other kinds of devices that use the I2C communication protocol, as well as other digital sensors. It also sends all the data we collect to a SD card module, so we can analyse it later, and features a buzzer, a LED indicator and a button for interface. HAND PRESSURE METER Using an Arduino, a multiplexer and 14 resistors to form voltage dividers, this board was designed to be used along with a glove which features 14 Force-Sensing Resistors (FSRs) on its palm. The goal is to analyse the pressure exerted by the pilot’s hands on different designs of steering wheels, in order to maximize the car ergonomics. STRAIN GAUGE MODULE Extensometry is an engineering method used to measure mechanical stresses on elements. Through the use of resistive strain gauges (extensometers) placed onto the elements, and used to form a Wheatstone Bridge circuit, this board is used to amplify the low signals generated by the gauges, which are excited by forces applied on the analysed systems. The signals are submitted to analog circuits, and then read, processed and stored on an SD card, as well as transmitted directly to a PC, by an Arduino board.

WHO I AMMy name is Bruno I am 18 years old, I currently live in Argentina, Buenos Aires.I have a few days left to receive an electronic technician in an important school in Buenos Aires.I am also very fond of sports, I like Futsal, Tennis and water polo. The latter I train to this day, the truth is a little known sport but very fun. I chose electronics since I was a child because I like it too much and it is very fun, also always had the dream of making some contribution or help to society.Project descript_ionAs I mentioned earlier, my dream is to help or make a contribution to society. Thinking about how I could carry out this dream, it occurred to me to mix the two that I love the most: electronics and water polo. In the club where I train there is not so much budget to buy the electronic boards that the sport requires. So my idea is to make one of these boards (similar to the one in the photo) from my knowledge that I acquired during these 6 years of electronics. At first I have to do tests to achieve a correct programming and then carry it out in a big way. Next I will leave some photos of the first test plates that I need.At first I plan to do all the tests on arduino and once it works correctly I plan to take it to another microcontroller.Words to PCBWayI met this company through a friend who recommended it to me for its excellent work. I really like what they propose with the sponsors and the truth is something innovative that would serve very well for the Latin American countries, which do not count as much capital to start their project. This is an incredible help so that everyone can pursue their dreams.On the other hand, I look forward to this great help from the company and I look forward to your help to carry out this project. From now many thanks and greetings!

This is a DIY handheld gamepad, made using ESP32 microcontroller. You might have seen such game controllers before. But most of them use Arduino. Or more specifically Arduino pro micro or Leonardo board. Because these boards support HID, or human interface devices over USB. but esp32 doesn’t have such feature. So how do we do it? Well, esp32 does have BLE, or Bluetooth low energy, which we can use to communicate wirelessly, over Bluetooth.So we have ESP32 module, as the central controller, then we have the USB type-C port, and a 3.3v regulator to convert 5v to 3.3v. Then we have the programming circuit, using ch340c usb to serial converter with auto programming mode and auto reset circuitry using duel transistors. We also have a battery charging circuit, along with overcharge, and over discharge protection. Which then boost up to 5v, using the boost converter ic. Next we have the joysticks, D-Pad buttons, trigger buttons, Neopixel LEDs, i2c port. And finally a 3way switch, to toggle between USB power and battery power.The gamepad has2 analog joysticks2 trigger buttons2 D-Pads6 addressable RGB LEDsand a i2c portIt can run using 2 18650 Li ion cells, which can be changed using the USB type-C port. And it can also be used to program the microcontroller. The design is inspired by the new ps5 controller, to give it a better look. The GPIO4 is connected to the battery using a voltage divider. So that we can measure the battery voltage. the NeoPixel LEDs will indicates if the controller is connected to a device or battery voltage is low.The code is based on BLE Gamepad library by lemmingDev. In the code I have defined all the GPIO pins for different inputs. Then in the setup there are some initial led animations. And as soon as the board is connected to the device, all LEDs will turn Green. And it will check battery voltage, in a time interval, which is defined earlier. Then we get the button states, and set the gamepad buttons accordingly. Then we take the analog inputs, and map it to suitable values. And finally set the axis according to the values we received. After uploading the code open Bluetooth menu on your Smartphone or PC and you will see a new device pops up. click on that to connect it and you are ready to play.

Greetings colleagues, my name is Johan and today I want to tell you about my project which is a 2kW MPPT solar charger with a maximum charging current of 40AThis charger was designed from the STM32F103C8 microcontroller since due to the complexity of the MPPT algorithm a good handheld processing speed with good precision ADC was needed, the power stage of this MPPT is designed from a synchronous source using mosfets common N channel as they are available anywhere in addition to their low cost and the great power they can handle.The efficiency of this charger if a common source with a diode had been used was around 80%, while with the implementation of a synchronous source this would be around 97%, crazy :). At this point I have to talk about power mosfets, the ideal mosfets to use in this charger are those that have a minimum resistance and that can withstand a current of no less than 130 A each, this because although the source It is very efficient, there will always be a loss in heat that must be dissipated, which causes an increase in temperature, greatly reducing the conduction capacity of the mosfets and ultimately damaging the charger, it is for this reason that the most robust mosfets should be used. possible and with the lowest internal resistance.I would also like to talk about the necessary inductor for this source since it is very important to take into account its saturation current, since we are talking about around 40A! that they will have to pass forces through the inductor and that it must withstand without saturating it and without changing its nominal inductance value.The fact of using SMD components in this design is because the through components tend to have unwanted components such as parasitic resistors in the capacitor, which in high frequency designs such as this charger can cause deviations in the calculations made for this source, that is why The use of SMD components in addition to making a more compact board design possible, improves the performance of the circuit.For this design he decided to use the IR2110 mosfet driver since it has a high switching speed in addition to a good current of up to 2.5 amps to turn the mosfets on and off, which makes it possible to turn on almost any type of mosfets without major complications and it is achieved practically anywhere.To measure the charging current of the battery, I decided to use a resistance (shunt) to measure through the voltage drop in it, by OHM law clear the current that is passing through it, I decided to do it this way Since we will have currents of up to 40A, it makes it difficult to get a hall-effect current meter that allows us to measure that current.At this point I say goodbye and send greetings to all the colleagues on the platform who in one way or another guided me to develop this renewable energy project, thank you.