ESP32 PWM: Dimming LEDs and Fading Effects
Digital pins give you ON and OFF. PWM — pulse-width modulation — gives you everything in between. By switching a pin thousands of times…
ESP32
Wi-Fi and Bluetooth projects on the ESP32: web servers, deep sleep, BLE and more.
ESP32 Bluetooth Basics: BLE Notify Sensor
Wi-Fi is great for dashboards, but when your phone should talk directly to a sensor — no router, no internet — Bluetooth Low Energy…
Deep Sleep on ESP32: Build a Battery-Powered Sensor
An ESP32 running flat out draws 80–240 mA — an 18650 battery is dead in a day. The same chip in deep sleep sips around…
ESP32 Wi-Fi Weather Station with DHT22
Take one ESP32, add one DHT22 sensor, and you have a weather station that serves live temperature and humidity to any browser on your…
ESP32 Web Server: Control an LED from Your Phone
The ESP32’s superpower is built-in Wi-Fi, and the most satisfying first project is a tiny web server: open a page on your phone, tap…