Table of Contents
Espressif Systems ESP32
The Espressif Systems ESP32 is used in cheap WiFi modules. It embeds an Xtensa LX6 CPU.
Also see tasmota for various applications of this processor.
Pinout
ESP DEVKIT V1
+------+
EN | 15 | GPIO23 VSPI_MOSI
RTC_GPIO0 SENSOR_VP ADC1_CH0 GPIO36 | 14 | GPIO22 I2C_SCL
RTC_GPIO3 SENSOR_VN ADC1_CH3 GPIO39 | 13 | GPIO1 UART0_TX
RTC_GPIO4 VDET1 ADC1_CH6 GPIO34 | 12 | GPIO3 UART0_RX
RTC_GPIO5 VDET2 ADC1_CH7 GPIO35 | 11 | GPIO21 I2C_SDA
RTC_GPIO9 XTAL_32K TOUCH9 ADC1_CH4 GPIO32 | 10 | GPIO19 VSPI_MISO
RTC_GPIO8 XTAL_32K TOUCH8 ADC1_CH5 GPIO33 | 9 | GPIO18 VSPI_CLK
RTC_GPIO6 DAC1 ADC2_CH8 GPIO25 | 8 | GPIO5 VSPI_CS0
RTC_GPIO7 DAC2 ADC2_CH9 GPIO26 | 7 | GPIO17 UART2_TX
RTC_GPIO17 TOUCH7 ADC2_CH7 GPIO27 | 6 | GPIO16 UART2_RX
RTC_GPIO16 HSPI_CLK TOUCH6 ADC2_CH6 GPIO14 | 5 | GPIO4 ADC2_CH0 TOUCH0 RTC_GPIO10
RTC_GPIO15 HSPI_MISO TOUCH5 ADC2_CH5 GPIO12 | 4 | GPIO2 ADC2_CH2 TOUCH2 RTC_GPIO12
RTC_GPIO14 HSPI_MOSI TOUCH4 ADC2_CH4 GPIO13 | 3 | GPIO15 ADC2_CH3 TOUCH3 HSPI_CS0 RTC_GPIO13
GND | 2 | GND
VIN | 1 | 3V3
+------+
NODEMCU ESP-32S
+------+
3V3 | | GND
EN_RESET | | GPIO23 VSPI_MOSI
RTC_GPIO0 SENSOR_VP ADC1_CH0 GPIO36 | | GPIO22 I2C_SCL
RTC_GPIO3 SENSOR_VN ADC1_CH3 GPIO39 | | GPIO1 UART0_TX
RTC_GPIO4 ADC1_CH6 GPIO34 | | GPIO3 UART0_RX
RTC_GPIO5 ADC1_CH7 GPIO35 | | GPIO21 I2C_SDA
RTC_GPIO9 TOUCH9 ADC1_CH4 GPIO32 | | GND
RTC_GPIO8 TOUCH8 ADC1_CH5 GPIO33 | | GPIO19 VSPI_MISO
RTC_GPIO6 DAC1 ADC2_CH8 GPIO25 | | GPIO18 VSPI_CLK
RTC_GPIO7 DAC2 ADC2_CH9 GPIO26 | | GPIO5 VSPI_CS0
RTC_GPIO17 TOUCH7 ADC2_CH7 GPIO27 | | GPIO17 UART2_TX
RTC_GPIO16 HSPI_CLK TOUCH6 ADC2_CH6 GPIO14 | | GPIO16 UART2_RX
RTC_GPIO15 HSPI_MISO TOUCH5 ADC2_CH5 GPIO12 | | GPIO4 ADC2_CH0 TOUCH0 RTC_GPIO10
GND | | GPIO0 ADC2_CH1 TOUCH1 RTC_GPIO11
RTC_GPIO14 HSPI_MOSI TOUCH4 ADC2_CH4 GPIO13 | | GPIO2 ADC2_CH2 TOUCH2 RTC_GPIO12
UART1_RX GPIO9 | | GPIO15 ADC2_CH3 TOUCH3 HSPI_CS0 RTC_GPIO13
UART1_TX GPIO10 | | GPIO8
GPIO11 | | GPIO7
VIN | | GPIO6
+------+