ESP32 Module

A substantially more capable chip than the ESP8266: two processor cores at 240 MHz, both WiFi and Bluetooth including BLE, far more RAM, and a much richer peripheral set with touch inputs, a proper ADC on multiple pins, and hardware encryption. The dual core is genuinely useful — one core can hold a network connection while the other runs your control loop without either stuttering. The default recommendation for any new IoT project. Runs at 3.3V logic. Dual-core 240 MHz processor, far beyond an Uno or ESP8266; WiFi and Bluetooth including BLE in one chip; Many more GPIO, ADC channels and touch inputs; Programmed from the standard Arduino IDE