This project is a WiFi Camera with Motion Detection, utilizing ESP32-CAM module and HC-SR501 PIR sensor. The camera is activated by the sensor's output. The system also includes power regulation and communication headers for setup and control. #WiFi #MCU #PIR #ReferenceDesign #project #ESP32 #camera #referenceDesign #edgeComputing #espressif #template #reference-design.

Mixed Voltage Arduino Nano Integration Example on a 4 Layer PCB Changelog/TODO: -Breakout the SPI Bus in a 2.54mm header in a snap off manner -add an IMU -Reorder the rows of the LEDs Tutorials: https://circuitdigest.com/microcontroller-projects/interfacing-max7219-led-dot-matrix-display-with-arduino

A 83 key keyboard, Norwegian QWERTY/DVORAK ISO style. It's of course possible to use other languages, as the MX cherry switches will accept keycaps with whatever language you need. It uses 83 1N4148 diodes and three LED's for caps lock,scroll lock, and QWERTY/DVORAK. It also needs pin headers that accepts the pins from a Teensy++2.0

This project is a controller module that uses the ESP32-WROOM-32E and the MAX3485 to communicate with Modbus devices. It has a USB-C port for power and data, a voltage regulator for stable operation, and headers for connecting sensors and actuators. It also has a CH340C chip for USB to serial conversion. #referenceDesign #project #ESP32 #ESP32WROOM #RF #WIFI #MCU #referenceDesign #simple-embedded #espressif #template #MAX3485 #RS485 #maximintegrated #reference-design #polygon

Guitar pedal starter template based on project by Mark Wu. Includes schematic and PCB layout for basic DIY pedal hardware. This includes two 1/4" jacks (one for input and one for output), a 9V power supply (including LED), a 3PDT true bypass wiring setup, and an example potentiometer that can be copy/pasted throughout the circuit. The headers are meant to be unpopulated so that wires can be soldered to the pads. PCB design rules imported from the JLCPCB 2-layer stackup template. #template

An I2C extension shield with 6 shielded ethernet ports and a TCA9548 breakout board. This board is for the target side, any microcontroller with a standard Arduino header can use it. With proper target side hardware and an SSTP ethernet cable, the board provides robust i2c communication over 10ft(could be longer, haven't tested it yet) with a bitrate of 400kHz under a noisy environment( near motors, power cables, switches, etc). The shield board provides power to the target side and can power the i2c device. The board also supports drdy trigger, which is available on many i2c sensors. The TCA9548 breakout board is for a scenario in which all of your i2c devices have the same address. #Arduino #Uno #Shield #Template #project-template #project

A compact battery-powered door/window sensor built around the ESP32-C3-MINI-1-N4 module. The design uses a single non-rechargeable AA cell with a TPS613221A 3.3 V boost regulator, reed switch magnetic contact sensing, low-power wake/report/sleep firmware strategy, RGB status LED for setup feedback, BOOT/EN controls, programming header, and input polarity protection. It is intended for smart-home security and automation applications, supporting WiFi or Bluetooth LE hub reporting with emphasis on low idle current, reliable RF burst power delivery, and field-replaceable battery operation. #ESP32-C3 #BLE #WiFi #DoorSensor #WindowSensor #ReedSwitch #LowPower #BatteryPowered #SmartHome #IoT

This project involves the design of a keypad lock system. It utilizes an ATMEGA328P microcontroller, buzzers, LEDs for indicator functions and a 4x3 matrix keypad. An in-circuit serial programming (ISP) header is also present for programming the microcontroller. #project #Template #projectTemplate #lock #keypad #arduino #atmega328 #TPS613222A #ISP #buzzer #referenceDesign #simple-embedded #microchip #template #reference-design

High-level recreation of the ThirstIQ Cap wiring diagram using an ESP32-WROOM-32 with AMS1117-3.3 regulated battery input, inline ON/OFF switch, four touch input headers on IO32/IO33/IO25/IO26, shared I2C OLED and RTC on IO21/IO22, UART debug/programming header on TXD0/RXD0, BOOT and RESET pushbuttons on IO0 and EN, buzzer on IO4, common 3V3/GND distribution, and PCB preparation for a 160 mm x 100 mm 4-layer layout. Layout intent includes clean 3.3 V power distribution, local decoupling for regulator and ESP32, accessible external headers/buttons, short clean BOOT/EN traces, shared I2C routing, touch-signal separation from noisy power and buzzer traces, and ESP32 antenna keepout.

2x20 Pin Header (2mm pitch)

Through Hole straight pin header, 01x03, 2.54mm pitch, single row #connector #pinheader #tht

The Micro is a microcontroller board based on the ATmega32U4 (datasheet), developed in conjunction with Adafruit. It has 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connection, an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a micro USB cable to get started. It has a form factor that enables it to be easily placed on a breadboard. The Micro board is similar to the Arduino Leonardo in that the ATmega32U4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Micro to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.

This project involves designing a versatile IoT sensor hub using the ESP32-WROOM-32E module. The main objective is to create a platform that enables seamless data collection and transmission from various environmental sensors over a WiFi network. The device will feature USB-C for power and data transfer, and will utilize on-board voltage regulation to ensure stable operation. A CH340C chip is employed for USB to serial conversion, facilitating easy programming and communication with a host computer. Key Features: Wireless Connectivity: Leverage the ESP32's built-in WiFi capabilities for real-time data transmission to cloud-based platforms or local servers. USB-C Interface: Utilize a modern USB-C connector for power and data transfer, providing flexibility and future-proofing the design. On-board Voltage Regulation: Include an AMS1117-3.3 voltage regulator to maintain a stable 3.3V output from the USB input, protecting sensitive components. Support for Multiple Sensors: Integrate various GPIOs to connect multiple sensor types ( temperature, humidity, air quality ) (temperature, humidity, air quality) for comprehensive environmental monitoring. Expandability: Design with additional headers for future expansion, enabling users to customize and extend the hub's capabilities with additional sensors or modules. Applications: Smart Home Automation: Integrating with home systems to monitor and respond to environmental changes. Environmental Monitoring: Providing data for ecological studies or urban environment monitoring. Industrial IoT: Enhancing systems within a factory or industrial setting to track conditions in real-time. With this setup, the device aims to be a robust and adaptable piece of technology, suitable for hobbyists, researchers, and developers interested in the expanding world of IoT.

This project is a WiFi Camera with Motion Detection, utilizing ESP32-CAM module and HC-SR501 PIR sensor. The camera is activated by the sensor's output. The system also includes power regulation and communication headers for setup and control. #WiFi #MCU #PIR #ReferenceDesign #project #ESP32 #camera #referenceDesign #edgeComputing #espressif #template #reference-design

Guitar pedal starter template based on project by Mark Wu. Includes schematic and PCB layout for basic DIY pedal hardware. This includes two 1/4" jacks (one for input and one for output), a 9V power supply (including LED), a 3PDT true bypass wiring setup, and an example potentiometer that can be copy/pasted throughout the circuit. The headers are meant to be unpopulated so that wires can be soldered to the pads. PCB design rules imported from the JLCPCB 2-layer stackup template. #template

Guitar pedal starter template based on project by Mark Wu. Includes schematic and PCB layout for basic DIY pedal hardware. This includes two 1/4" jacks (one for input and one for output), a 9V power supply (including LED), a 3PDT true bypass wiring setup, and an example potentiometer that can be copy/pasted throughout the circuit. The headers are meant to be unpopulated so that wires can be soldered to the pads. PCB design rules imported from the JLCPCB 2-layer stackup template. #template

Guitar pedal starter template based on project by Mark Wu. Includes schematic and PCB layout for basic DIY pedal hardware. This includes two 1/4" jacks (one for input and one for output), a 9V power supply, a 3PDT true bypass wiring setup, and an example potentiometer that can be copy/pasted throughout the circuit. size is a good default size for a 125B enclosure. The headers are meant to be unpopulated so that wires can be soldered to the pads. PCB design rules imported from the JLCPCB 2-layer stackup template. Meant to be used with the 3PDT Breakout Board on my profile. #template

Through Hole straight pin header, 01x04, 2.54mm pitch, single row #connector #pinheader #tht

Through Hole straight pin header, 01x08, 2.54mm pitch, single row #connector #pinheader #tht

Important Note: You must connect your own SPI/ICSP programming header if you want to burn the Arduino bootloader to the MCU. In this version, you must also provide your own UART interface. SMD Manufacturing: Need a hotplate and solderpaste Good to haves: - Oscillator Decoupling Caps Expose UART via connector Programming Button Onboard LED Reset Button You don't have to populate everything! Only these are mandatory: Reset Button Find the reference schematic here: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf

Through Hole straight 15 pin header, 01x10, 2.54mm pitch, single row #pinheader #tht #SimplifiedFootprint

Through Hole straight pin header, 01x10, 2.54mm pitch, single row #pinheader #tht #SimplifiedFootprint

Form of electrical connector

Welcome to your new project. Imagine what you can build here.

Welcome to your new project. Imagine what you can build here.

A board to use any PWM output with a 3 pin header

Changelog/TODO: -Breakout the SPI Bus in a 2.54mm header in a snap off manner -add an IMU -Reorder the rows of the LEDs -Create an external USB-C UART programmer to provide programming and power Tutorials: https://circuitdigest.com/microcontroller-projects/interfacing-max7219-led-dot-matrix-display-with-arduino

This is an office productivity hub featuring an STM32F103C8T6 MCU, GC9A01A display driver, voltage regulator, capacitors, resistors, switches, USB-C, and SWD header. #referenceDesign #edge-computing #edgeComputing #stm #template #iot #stm32f1 #reference-design

Through Hole straight pin header, 02x06, 2.54mm pitch, double row #pinheader #tht #simplifiedFootprint

Low-voltage logic-only CERILUME Phase 1 LED controller using an Arduino Nano ESP32 plug-in module, 5V logic level shifting for WS2812/SK6812 data, microphone input header, and labeled test pads. LED power distribution and high-current switching are intentionally out of scope.

Mini Paper USV PCB Upgrade v1.0 schematic twin using an ELEGOO MEGA 2560, L293D H-bridge, HC-SR04 ultrasonic sensor, SG90 servo header, LED indicators, buzzer, and dual 9V parallel battery input.

This module involves the design of a keypad lock system. It utilizes an ATMEGA328P microcontroller, buzzers, LEDs for indicator functions and a 4x3 matrix keypad. An in-circuit serial programming (ISP) header is also present for programming the microcontroller. #template #lock #keypad #reusable #module #simple-embedded #microchip #arduino #atmega328 #TPS613222A #ISP #buzzer #sublayout

Connector Header Surface Mount 2 position 0.049" (1.25mm)

Connector Header Surface Mount 2 position 0.049" (1.25mm)

This is a schematic of an IR (infrared) remote control system. It's built around a Microchip ATTINY2313 microcontroller (U1) and boasts five push-button switches, an indicator RED LED and an electret buzzer for user interaction. An ISP header provides programming capabilities. The project is battery-powered and implements boost converter TPS613222AD (IC1) for stable power supply. #project #Template #projectTemplate #lock #keypad #attiny2313 #TPS613222A #ISP #buzzer #reusable #module #simple-embedded #microchip #arduino #sublayout

Through hole straight pin header, 1x04, 4 pin, 4-pin, horizontal, angled, 2.54mm pitch, 6mm pin lenght single row

This is a schematic of an IR (infrared) remote control system. It's built around a Microchip ATTINY2313 microcontroller (U1) and boasts five push-button switches, an indicator RED LED and an electret buzzer for user interaction. An ISP header provides programming capabilities. The project is battery-powered and implements boost converter TPS613222AD (IC1) for stable power supply. #project #Template #projectTemplate #lock #keypad #arduino #attiny2313 #TPS613222A #ISP #buzzer #referenceDesign #simple-embedded #microchip #template #reference-design

An I2C extension shield with 6 shielded ethernet ports and a TCA9548 breakout board. This board is for the target side, any microcontroller with a standard Arduino header can use it. With proper target side hardware and an SSTP ethernet cable, the board provides robust i2c communication over 10ft(could be longer, haven't tested it yet) with a bitrate of 400kHz under a noisy environment( near motors, power cables, switches, etc). The shield board provides power to the target side and can power the i2c device. The board also supports drdy trigger, which is available on many i2c sensors. The TCA9548 breakout board is for a scenario in which all of your i2c devices have the same address. #Arduino #Uno #Shield #Template #project-template #project

Important Note: You must connect your own SPI/ICSP programming header if you want to burn the Arduino bootloader to the MCU. SMD Manufacturing: Need a hotplate and solderpaste Good to haves: - Oscillator Decoupling Caps Expose UART via connector Programming Button Onboard LED Reset Button You don't have to populate everything! Only these are mandatory: Reset Button Find the reference schematic here: https://www.arduino.cc/en/uploads/Main/ArduinoNano30Schematic.pdf

Connector Header Through Hole 2 position 0.079" (2.00mm) 01x02 JST B2B PH K

JST XH Connector Header Through Hole 6 position 0.098" (2.50mm) #commonpartslibrary #connector #header #tht #JST-XH

Low-voltage logic-only CERILUME Phase 1 LED controller using an Arduino Nano ESP32 plug-in module, 5V logic level shifting for WS2812/SK6812 data, microphone input header, and labeled test pads. LED power distribution and high-current switching are intentionally out of scope.

Interface board connecting a 64-pin TE CMC connector 2209129-1 to a 64-pin TE ribbon header 1-5102154-2 with straight-through pin mapping from pin 1 to pin 64.

Cyberdeck power distribution hub using a TP4056 Type-C Li-ion charger module, MT3608 boost converter module, switched output rail, voltmeter, servo, Arduino VIN, button signal header, and battery terminal on a 50 mm × 70 mm PCB.

USB-C powered ESP32 WiFi water flow meter for an external ultrasonic sensor on 3/4 inch PVC pipe, with protected 5V input, 3.3V regulation, programming header, reset/boot support, and status LEDs.

Scary Aquamarine Scramble Suit — Raspberry Pi LiDAR Scanner HAT with TFmini-Plus UART, TMC2209 stepper drive, MPU-6050 IMU, USB-C 5V input, 12V motor input, debug header, LEDs, and test points for indoor 360° obstacle mapping.

USB-C powered ESP32 WiFi water flow meter schematic with protected 5V input, 3.3V LDO, 12V boost supply for an external RS485 ultrasonic sensor, UART programming header, boot/reset network, and three status LEDs for power, WiFi, and flow activity.

Industrial ESP32-C3 controller board with isolated RS-485, protected 12V-24V input, opto-isolated digital inputs, sensor interfaces, and production debug header.

2-layer SELV ESP8266 smart relay logic board using an ESP-12F module, MCP1700-3302E 5V-to-3.3V LDO, exact 2x7 relay/control connector pinout, 4-pin UART programming header, GPIO0 flash test point, active-low GPIO2 status LED, power and GPIO test points, 55x45 mm board outline, top-side assembly, bottom solid ground pour, ESP-12F antenna keepout, 4 M3 mounting holes, and silkscreen connector labels for production use.

Conservative first-revision TIMI prototype built around ESP32-S3-WROOM-1-N16R8 with USB-C 5V input, native USB, 3.3V regulation, onboard MAX98357A audio out, external INMP441 header, status LEDs, buttons, UART debug header, required test points, and 4-layer antenna-conscious PCB constraints.