
Espressif development and debugging tool with automatic firmware downloading, drag-and-drop programming, serial communication, and JTAG debugging. Onboard ESP32-S3-MINI-1; supports ESP8266, ESP32, ESP32-S2, ESP32-S3, and ESP32-C3.

| Pin | Position | Type |
|---|---|---|
| 1 ESP_EN | 14 | Unknown |
| 2 VDD | 15 | Unknown |
| 3 ESP_TXD | 16 | Unknown |
| 4 GND | 17 | Ground |
| 5 ESP_RXD | 18 | Unknown |
| 6 ESP_IO0 | 19 | Unknown |
| 1 VDD | 20 | Unknown |
| 2 ESP_TMS | 21 | Unknown |
| 3 GND | 22 | Ground |
| 4 ESP_TCK | 23 | Unknown |
| 5 GND | 24 | Ground |
| 6 ESP_TDO | 25 | Unknown |
| 7 GND | 26 | Ground |
| 8 ESP_TDI | 27 | Unknown |
| 9 GND | 28 | Ground |
| 1 I2C_SDAOPTN_IO | 29 | Unknown |
| 2 I2C_SCLOPTN_IO | 30 | Unknown |
| 3 GND | 31 | Ground |
| 7 GND | 32 | Ground |
| 8 SPI_CLKOPTN_IO | 33 | Unknown |
| 11 VCC_5V | 34 | Unknown |
| 12 VCC_3V3 | 35 | Unknown |
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