(DIY) Amiga 500Plus 1024KB Chip RAM Upgrade Board. Hello, This is a tested and working project.This A500+ Trapdoor Expansion is an Easy DIY project, all components are through hole, marked on the PCB, Easy to solder, Easy to make ;) With this board you can Add 1MB chip ram to your Amiga 500 Plus Components:8pcs. 256K x 4Bit dynamic DIP20 RAMs8pcs. DIP20 IC sockets (some chips may be defective, sockets make easy to repace them)15pcs. 68 ohm 1/4 wattt resistances8pcs. 330nf 50V 5.08mm pitch (0.2inch pitch) ceramic capacitors 1 piece 2x28 pin female header. (get 2x40 pin female header then cut it) (optional) 1 piece toggle switch (only for A500 (not plus) models, to switch On/Off 0.5MB slow RAM)Some of compatible 256K x 4Bit dynamic RAMs list: (You can find from Aliexpress)MB81C4256 (Fujitsu)GM71C4256 (Goldstar)HM514256 (Hitachi)HY534256 (Hyundai)MT4C4256 (Micron)M5M44256 (Mitsubishi)MCM514256 (Motorola)MSM514256 (Oki)KM44C256 (Samsung)TMS44C256 (Texas Instruments)TC514256 (Toshiba)LC324256 (SANYO)UPD424256 (NEC)In order to protect your electronical devices, always turn off your Amiga before connecting or unconnecting any device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you

Happy New Year !The design of the lottery ticket to be drawn on December 31, 2020.BOMLED 0805 x8RESISTOR 0805 x8SWITCH-SPDT-SMD-A x1BATTERY HOLDER 2032 x1

A needle injector project made with the wish of the world to return to normal with the vaccine in 2021 I hope you like my 2021 new year project. Thanks

(DIY) KEYBOARD DONGLE for Commodore-64 586220 DIAGNOSTIC CARTRIDGEHello,The 586220 diagnostic cartridge is a very popular Comodore-64 diagnostic tool. It can test many functions of your Commodore-64 and find if there is a fault. Previously I shared a PCB to make a 586220 diagnostic cartridge.But the 586220 diagnostic cartridge is not enough for testing everything, you need some extra connections (dongles) for testing input/output ports.I have prepared some simple dongles to test the input / output ports for you. In fact, you can make these dongles using only connectors, cables, and a few resistors. However, it will be easier to make and use them with these PCBs.There are a total of six dongles (5 PCBs) in four projects. You just need to make an extra serial port (disk drive port) dongle using DIN6 male connector and two cables without using PCB.All tests will pass FULLY when all 6 dongles are connected and the 586220 diagnostic cartridge is inserted into the C64.The two control port dongles can only work if the keyboard dongle is connected. Please note,control port dongles only support testing the game paddle functions (controlled by the SID). Control port dongles do not test four joystick directions and fire button functions! With a real joystick and a joystick test program, you must test the four joystick directions and the fire buttons functions separately. ( https://csdb.dk/release/?id=134875 )Make sure that the dongles are not connected to the Commodore 64 in reverse position, incorrectly connecting dongles could damage Commodore64 !Other Dongles:Dongle for Control PortsDongle for Cassette PortDongle for User PortMany thanks to Jani.In order to protect your electronical devices, always turn off your Commodore-64 before connecting or unconnecting the dongles or any other device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.COMPONENTS (for all six dongles):2 pcs. D-SUB 9 Pin Female Connector (for 2 control ports dongles)805-12p 2x6 pin 3.96mm Pitch Card Edge Connector (for datassette port dongle)805-24p 2x12pin 3.96mm Pitch Cad Edge Connector (for user port)6 pin Male DIN Connector (for serial port)20 pin female header. (2x20 pin double row female header will be better) (for keyboard connector)150 ohm 1/4 watt Resistance (for datassette port dongle)330 ohm 1/4 watt Resistance (for datassette port dongle)4pcs. 100K 1/4 watt Resistance (for 2 control ports dongles)5 pcs LED (optioal)5pcs 680 ohm 1/4 watt Resistance (optional)And, you will need a 586220 Diagnostic Cartridgehttps://www.pcbway.com/project/shareproject/C64_DEAD_TEST_781220_and_DIAGNOSTIC_586220_CARTRIDGE_TOGETHER.html

(DIY) USER PORT DONGLE for Commodore-64 586220 DIAGNOSTIC CARTRIDGEHello,The 586220 diagnostic cartridge is a very popular Comodore-64 diagnostic tool. It can test many functions of your Commodore-64 and find if there is a fault. Previously I shared a PCB to make a 586220 diagnostic cartridge.But the 586220 diagnostic cartridge is not enough for testing everything, you need some extra connections (dongles) for testing input/output ports.I have prepared some simple dongles to test the input / output ports for you. In fact, you can make these dongles using only connectors, cables, and a few resistors. However, it will be easier to make and use them with these PCBs.There are a total of six dongles (5 PCBs) in four projects. You just need to make an extra serial port (disk drive port) dongle using DIN6 male connector and two cables without using PCB.All tests will pass FULLY when all 6 dongles are connected and the 586220 diagnostic cartridge is inserted into the C64.The two control port dongles can only work if the keyboard dongle is connected. Please note,control port dongles only support testing the game paddle functions (controlled by the SID). Control port dongles do not test four joystick directions and fire button functions! With a real joystick and a joystick test program, you must test the four joystick directions and the fire buttons functions separately. ( https://csdb.dk/release/?id=134875 )Make sure that the dongles are not connected to the Commodore 64 in reverse position, incorrectly connecting dongles could damage Commodore64 !Other Dongles:Dongle for Control PortsDongle for Cassette PortDongle for Keyboard ConnectorMany thanks to Jani.In order to protect your electronical devices, always turn off your Commodore-64 before connecting or unconnecting the dongles or any other device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.COMPONENTS (for all six dongles):2 pcs. D-SUB 9 Pin Female Connector (for 2 control ports dongles)805-12p 2x6 pin 3.96mm Pitch Card Edge Connector (for datassette port dongle)805-24p 2x12pin 3.96mm Pitch Cad Edge Connector (for user port)6 pin Male DIN Connector (for serial port)20 pin female header. (2x20 pin double row female header will be better) (for keyboard connector)150 ohm 1/4 watt Resistance (for datassette port dongle)330 ohm 1/4 watt Resistance (for datassette port dongle)4pcs. 100K 1/4 watt Resistance (for 2 control ports dongles)5 pcs LED (optioal)5pcs 680 ohm 1/4 watt Resistance (optional)And, you will need a 586220 Diagnostic Cartridgehttps://www.pcbway.com/project/shareproject/C64_DEAD_TEST_781220_and_DIAGNOSTIC_586220_CARTRIDGE_TOGETHER.html

(DIY) CASSETTE PORT DONGLE for Commodore-64 586220 DIAGNOSTIC CARTRIDGEHello,The 586220 diagnostic cartridge is a very popular Comodore-64 diagnostic tool. It can test many functions of your Commodore-64 and find if there is a fault. Previously I shared a PCB to make a 586220 diagnostic cartridge.But the 586220 diagnostic cartridge is not enough for testing everything, you need some extra connections (dongles) for testing input/output ports.I have prepared some simple dongles to test the input / output ports for you. In fact, you can make these dongles using only connectors, cables, and a few resistors. However, it will be easier to make and use them with these PCBs.There are a total of six dongles (5 PCBs) in four projects. You just need to make an extra serial port (disk drive port) dongle using DIN6 male connector and two cables without using PCB.All tests will pass FULLY when all 6 dongles are connected and the 586220 diagnostic cartridge is inserted into the C64.The two control port dongles can only work if the keyboard dongle is connected. Please note,control port dongles only support testing the game paddle functions (controlled by the SID). Control port dongles do not test four joystick directions and fire button functions! With a real joystick and a joystick test program, you must test the four joystick directions and the fire buttons functions separately. ( https://csdb.dk/release/?id=134875 )Make sure that the dongles are not connected to the Commodore 64 in reverse position, incorrectly connecting dongles could damage Commodore64 !Other Dongles:Dongle for Control PortsDongle for Keyboard ConnectorDongle for User PortMany thanks to Jani.In order to protect your electronical devices, always turn off your Commodore-64 before connecting or unconnecting the dongles or any other device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.COMPONENTS (for all six dongles):2 pcs. D-SUB 9 Pin Female Connector (for 2 control ports dongles)805-12p 2x6 pin 3.96mm Pitch Card Edge Connector (for datassette port dongle)805-24p 2x12pin 3.96mm Pitch Cad Edge Connector (for user port)6 pin Male DIN Connector (for serial port)20 pin female header. (2x20 pin double row female header will be better) (for keyboard connector)150 ohm 1/4 watt Resistance (for datassette port dongle)330 ohm 1/4 watt Resistance (for datassette port dongle)4pcs. 100K 1/4 watt Resistance (for 2 control ports dongles)5 pcs LED (optioal)5pcs 680 ohm 1/4 watt Resistance (optional)And, you will need a 586220 Diagnostic Cartridgehttps://www.pcbway.com/project/shareproject/C64_DEAD_TEST_781220_and_DIAGNOSTIC_586220_CARTRIDGE_TOGETHER.html

(DIY) CONTROL PORT DONGLE for Commodore-64 586220 DIAGNOSTIC CARTRIDGE(Two pieces required for two control ports)Hello,The 586220 diagnostic cartridge is a very popular Comodore-64 diagnostic tool. It can test many functions of your Commodore-64 and find if there is a fault. Previously I shared a PCB to make a 586220 diagnostic cartridge.But the 586220 diagnostic cartridge is not enough for testing everything, you need some extra connections (dongles) for testing input/output ports.I have prepared some simple dongles to test the input / output ports for you. In fact, you can make these dongles using only connectors, cables, and a few resistors. However, it will be easier to make and use them with these PCBs.There are a total of six dongles (5 PCBs) in four projects. You just need to make an extra serial port (disk drive port) dongle using DIN6 male connector and two cables without using PCB.All tests will pass FULLY when all 6 dongles are connected and the 586220 diagnostic cartridge is inserted into the C64.The two control port dongles can only work if the keyboard dongle is connected. Please note,control port dongles only support testing the game paddle functions (controlled by the SID). Control port dongles do not test four joystick directions and fire button functions! With a real joystick and a joystick test program, you must test the four joystick directions and the fire buttons functions separately. ( https://csdb.dk/release/?id=134875 )Other Dongles:Dongle for Cassette PortDongle for Keyboard ConnectorDongle for User PortMany thanks to Jani.In order to protect your electronical devices, always turn off your Commodore-64 before connecting or unconnecting the dongles or any other device.Gerber files can be changed at any time. Before paying for the PCBs, be sure to update your orders!Have funThank you.COMPONENTS (for all six dongles):2 pcs. D-SUB 9 Pin Female Connector (for 2 control ports dongles)805-12p 2x6 pin 3.96mm Pitch Card Edge Connector (for datassette port dongle)805-24p 2x12pin 3.96mm Pitch Cad Edge Connector (for user port)6 pin Male DIN Connector (for serial port)20 pin female header. (2x20 pin double row female header will be better) (for keyboard connector)150 ohm 1/4 watt Resistance (for datassette port dongle)330 ohm 1/4 watt Resistance (for datassette port dongle)4pcs. 100K 1/4 watt Resistance (for 2 control ports dongles)5 pcs LED (optioal)5pcs 680 ohm 1/4 watt Resistance (optional)And, you will need a 586220 Diagnostic Cartridgehttps://www.pcbway.com/project/shareproject/C64_DEAD_TEST_781220_and_DIAGNOSTIC_586220_CARTRIDGE_TOGETHER.html

There is a great group to talk about SI4735, SI4732 and some other radio chips and projects at below Facebook grouphttps://www.facebook.com/groups/532613604253401/To take advantage of this chips I suggest using this uptodate Ardunio library done by PU2CLR https://github.com/pu2clr/SI4735/

Hi,ATX Breakout Board PCB 3.3v, 5v, +12v, -12v out 2x USB and 1...9V variable symmetrical outputUSB Charge Resistor tablehttps://320volt.com/atx-guc-kaynagi-regulator-voltaj-cikis-karti/

You can be creative and design your own circuit and add different sensors (other LEDs...). The idea here is to use thumbtack and paperclips as your wire.

Hello Everyone!We will make Arduino On Off Button and Coin Cell Power Supply for Arduino in this Project.SchematicHow is works On Off Button?As you can see we have 2 button in this project. On button is connected to thyristor gate pin. If get voltage to the Thyristor gate pin, Thyristor will transmit the energy to the arduino. Stop to transmitting we need to stop the current of the Arduino Connection. For to do this, we are using bc817 transistor. If press the stop button, the current to the base pin of the transistor will stop and transistor cut off thyristor transaction. CR2032 Battery Power SupplyWe have us 2x CR2032 battery holder in our pcb. 2x battery gives us 6 volt. And this voltage is enough to run arduino. Current of these batteries can run arduino for long times.Circle ElectronicYou can watch our YouTube videos about this project. You can learn everything from that video and you can order pcb. We have showed, how we designed this pcb also. ?Visit our website and see our products.https://www.circleelectronic.com

This robot control board contains an ATmega328P microcontroller and an L293D motor driver. Of course, it is no different from an Arduino Uno board but it is more useful because it does not need another shield to drive the motor! It is free from jumper clutter and can be easily programmed with the CH340G. While driving two DC motors, you can also control different sensors by using I / O pins with this board. In this project, we used an HC-SR04 ultrasonic distance sensor and an IR infrared sensor. In addition, one servo motor was used. You can also get an idea of how to make your own arduino uno board with this video.You can program a robot with 5 different scenarios with this control board. The following scenarios are included in this project:SUMO mode: It is a sport in which two robots attempt to push each other out of a circle (in a similar fashion to the sport of sumo).Follow Me Mode: It can sense the presence of object to be followed using HC-SR04 sensor.Tracking Mode: Line follower Robot is a vehicle which follows a line, either a black line or white line.Avoiding Mode: Obstacle Avoiding Robot is an intelligent device which can automatically sense the obstacle in front of it and avoid them by turning itself in another direction.Drawing Mode: It contains servo motor and a pen. It can draw its own movement tracks on the surface.In this project, DIP type components were used for easy soldering.Required Components:ATmega328P with Bootloader - https://bit.ly/2U9iwJwL293D Motor Driver IC - https://bit.ly/33BV2juType B USB Socket - https://bit.ly/2WBSQqwDIP Socket 28/16 Pins - https://bit.ly/2UahQDK12/16 MHz Crystal - https://bit.ly/33FNTyLL7805 TO-220 - http://bit.ly/2N5WnYG100uF Capacitor - https://bit.ly/2U98JTULED - http://bit.ly/37OajhSResistor 10K/ 1K - https://bit.ly/2WFsNPl470nF Capacitor - https://bit.ly/2UwQ2bwPower Jack Socket - http://bit.ly/2QAzFdp2 Pin Terminal Block - http://bit.ly/2lEgy58Male Pin Header - https://bit.ly/3ab5h0w10nF / 22pF Ceramic - https://bit.ly/2WCuQ6Y6V 200RPM Mini Metal Gear Motor - https://bit.ly/2Qyt0QD7.4V 1000mAh 2S Lipo Battery - https://bit.ly/2xdLUp39V 800mAh Battery - http://bit.ly/32oPu9X9V Battery Connector - https://bit.ly/2Ua9b4kUltrasonic Module HC-SR04 - https://bit.ly/2y2apWJIR Infrared Sensor - https://bit.ly/2WCQgASCH340G USB to TTL IC -Get the 3D Files: https://bit.ly/3acxiopGet the Source Code: https://bit.ly/2xfpIee

Basic LM2576 5v DC ConverterABOUTThe LM2576 series of regulators are monolithic integrated circuits that provide all the active functions for a step-down (buck) switching regulator, capable of driving 3-A load with excellent line and load regulation. These devices are available in fixed output voltages of 3.3 V, 5 V, 12 V, 15 V, and an adjustable output version.NOTE: L1 = L-US100UH3ASchematicBOM

You can place this homemade gadget in the windows and doors of your home, office or garage. So you can have an buzzer warning system. Maybe you can use it for your pets? For example, you may receive an audible notification when your cat leaves or enters the house.What is an IR sensor?An infrared (IR) sensor is an electronic device that measures and detects infrared radiation in its surrounding environment.Definition of Touchless:Relating to or denoting technology that is operated by means of gestures rather than by touching a control or interface.Definition of Proximity Sensor:A proximity sensor is an electronic sensor that can detect the presence of objects within its vicinity without any actual physical contact.

Hi, I'm CRAZY PROF. Previously I have designed a communication development pcb for microchip 16f or 18f series microcontrollers.This motor driver is designed to save your pcb space.Many Arduino development shield PCBs connect to Arduino via female-male cables.I have specifically designed the Arduino uno or mega on the L298N driver card takes up less space and requires less wiring, and also re-use of all pins of the arduino was targeted.That is, 1 cable can normally be attached to the arduino pin. Additional connections to the same pin may be required if necessary. As you can see in my design, there are 2 pieces of the same arduino pin. When one pin is used, another cable can be plugged back into the same pin.Now let's move on to the features of PCB ...* It is within 10x10cm size suitable for PCBWAY campaign.* 2 layers PCB* L298N operating voltage (5v) can be taken from arduino or external supply via Jumper.* L298N can be supplied externally with 78l05 regulator up to 30v.* In most L298N pcb, current limiting resistor is not installed or short-circuited. With this in mind, I have separated the SENSE-A and SENSE-B pins and made analogue current measurement possible.* PCB in this state can drive stepper motor or dc motor. If desired, a single motor can be connected to the bridge.* L298N heatsink is reserved for the outside of the pcb.* In case of sponsorship, I will provide free transmission to the required robotics project developers or technical lab laboratories.I would also like to thank PCBWAY for giving us this opportunity ...

### DESCRIPTIONthis pic programmer to calibrate and pcb sini have made me support you would like very much :)### TECHNICAL DETAILS / COMPONENTS### LEARN / TOPIC / BUILD INSTRUCTIONS