Guides

Pinouts. Tutorials. Answers.

Chip and board pinouts, plus sensor and module reference guides: real GPIO tables, real specifications, and working code for each one.

Reference VL53L0X / VL53L1X Time-of-Flight Distance Sensor Complete Guide ST Microelectronics' VL53L0X and VL53L1X measure distance by timing a laser pulse's actual flight time, not by inferring it from an echo like an ultrasonic sensor. This guide covers both chips' real specs, wiring one to an ESP32, and which of the two to pick. Read guide

Reference ESP32-S2 Mini Pinout The complete pin reference for the WEMOS/Lolin S2 Mini: native USB, 14 capacitive touch pins, and no Bluetooth at all. Read guide

Guide ESP32-C3-MINI-1 Pinout The complete pin reference for the ESP32-C3-MINI-1 module: a single RISC-V core, Wi-Fi and Bluetooth LE, and the exact pins you can safely reuse. Read guide

Reference Audio Amplifier for ESP32 and Arduino How to make sound with a microcontroller: analog versus I2S amplifiers, the MAX98357A with an ESP32-S3, the PAM8403 and other analog modules, speakers, power and noise. Read guide

Reference The Complete Guide to the BH1750 Digital Light Sensor A digital I2C ambient light sensor that outputs calibrated lux directly, no ADC math or LDR calibration curve needed. This guide covers the pinout, ESP32 wiring, the measurement-mode trade-offs, and running two sensors on one I2C bus via the address pin. Read guide