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ESP32

ESP32 Family:

  • ESP32 (2 core, BT, WiFi)
  • ESP32-S2 (1 core, no BT)
  • ESP32-C3 (1 core RISC, WiFi, BT5.0)
  • ESP32-S3 (2 core, WiFi, BT5.0)

Chip Series Comparison

Modules

  • ESP32 WROOM 32U
  • D1 MINI
  • WEMOS LITE

Pins

Max voltage on any pin is 3,3V!

Straping pins

Following pins state are latched into GPIO_STRAPPING register during reset:

  1. MTDI
  2. GPIO0
  3. GPIO2
  4. MTDO
  5. GPIO5

Input only pins!

Input only GPIOs! Or differential ADC.

  • GPIO34 = ADC1_CH6
  • GPIO35 = ADC1_CH7
  • GPIO36 = ADC1_CH0 = SENSOR_VP
  • GPIO39 = ADC1_CH3 = SENSOR_VN