ESP32
The ESP32 is a series microcontrollers manufactured by a company named Espressif. that include Wi-Fi and Bluetooth wireless capabilities and dual-core processor. The SP32 is capable of functioning reliably in industrial environments, with an operating temperature ranging from –40°C to +125°C. ESP32 have a very low power consumption and hence are suitable for wearable electronics and other IoT applications.
The ESP32 has in-built WiFi and Bluetooth (Classic and BLE) communication capability.
We will be using the ESP32 in projects that need to exchange data with an MQTT broker over WiFi or with the mobile app over BLE.
See the ESP32 Board Pinout and Pin Functions guide which is a must-have reference when assembling circuits.