Reference

This calculator will help you compute the required PSC and ARR values to achieve your desired timer interrupt period. Just put in the timer interrupt period, the clock frequency, and the ARR register width.

This guide shows the GPIO pins, ADC channels, power pins, boot pins, communication pins, and safe-to-use pins on the ESP32-WROOM-32 development board. Use the diagram and tables below to choose the right pins for sensors, I2C, SPI, UART, PWM, touch input, and analog readings. The guide focuses on the common …

The Raspberry Pi Pico is a microcontroller development board built by the same makers of the Raspberry Pi. As seen in the Raspberry Pi Pico pinout diagram below, it has 40 GPIO pins with 3 analog inputs. It features the RP2040, a 32-bit dual ARM cortex M0+ microcontroller chip with …

The Arduino Nano is a smaller, breadboard-friendlier version of the Arduino Uno. This Arduino Nano Pinout diagram reference is a handy guide for using this board. Interactive Arduino Nano Pinout Diagram Arduino Nano Safe-to-Use Pins For most beginner projects, the safest general-purpose pins are: Use Case Recommended Pins Avoid / …

The Arduino UNO is arguably the most popular Arduino board currently available. This Arduino UNO Pinout diagram reference will hopefully help you get the most out of this board:   Arduino UNO Pinout Description The Arduino UNO board is divided into digital, analog, and power pins. There are pins with …

This is a handy Arduino programming guide for those who already have some experience with Arduino but sometimes forget about the basics.

Test command Command Response Parameter AT OK -   Reset Command Response Parameter AT+RST OK -   Get firmware version Command Response Parameter AT+GMR VERSION:<Param> OK Param : firmware version   WiFi mode Command Response Parameter AT+CWMODE=? +CWMODE:(1-3) OK - AT+CWMODE? +CWMODE: <Param> OK Param: 1 -- station mode (client) …

The HC-05 is a common Bluetooth module used in many microcontroller projects. Here's a compilation of all HC-05 Bluetooth AT Commands. For beginners, see Arduino Bluetooth.

A reference of Arduino Parts for building your own Arduino board.

The NodeMCU is an Arduino-compatible board that features the ESP8266 at its core. It became popular because it is a WiFi-ready microcontroller by itself - no need for an Arduino. This NodeMCU pinout reference aims to show pinouts for NodeMCU v0.9, NodeMCU v1.0, and NodeMCU v3.