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

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.

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)