ESP32-C3-WROOM-02U official Espressif surface-mount wireless module with U.FL/IPEX connector for external antenna. 2.4 GHz Wi-Fi 4 and Bluetooth LE 5 connectivity from the ESP32-C3 RISC-V family. orderable N4 variants include 4 MB flash.
EN/CHIP_PU
GPIO0/ADC1_CH0/XTAL_32K_P
GPIO1/ADC1_CH1/XTAL_32K_N
3V3
GND
GND
GPIO20/U0RXD
GPIO21/U0TXD
GPIO18/USB_D-
GPIO19/USB_D+
GPIO2/ADC1_CH2
GPIO3/ADC1_CH3
GPIO4/ADC1_CH4
GPIO5/ADC2_CH0
GPIO6
GPIO7
GPIO8
GPIO9
GPIO10
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| EN/CHIP_PU | 2 | control | EN/CHIP_PU | |
| GPIO0/ADC1_CH0/XTAL_32K_P | 18 | signal | GPIO0/ADC1_CH0/XTAL_32K_P | |
| GPIO1/ADC1_CH1/XTAL_32K_N | 17 | signal | GPIO1/ADC1_CH1/XTAL_32K_N | |
| 3V3 | 1 | power | 3V3 | |
| GND | 19 | ground | GND | |
| GND | 9 | ground | GND | |
| GPIO20/U0RXD | 11 | signal | GPIO20/U0RXD | |
| GPIO21/U0TXD | 12 | signal | GPIO21/U0TXD | |
| GPIO18/USB_D- | 13 | signal | GPIO18/USB_D- | |
| GPIO19/USB_D+ | 14 | signal | GPIO19/USB_D+ | |
| GPIO2/ADC1_CH2 | 16 | signal | GPIO2/ADC1_CH2 | |
| GPIO3/ADC1_CH3 | 15 | signal | GPIO3/ADC1_CH3 | |
| GPIO4/ADC1_CH4 | 3 | signal | GPIO4/ADC1_CH4 | |
| GPIO5/ADC2_CH0 | 4 | signal | GPIO5/ADC2_CH0 | |
| GPIO6 | 5 | signal | GPIO6 | |
| GPIO7 | 6 | signal | GPIO7 | |
| GPIO8 | 7 | signal | GPIO8 | |
| GPIO9 | 8 | signal | GPIO9 | |
| GPIO10 | 10 | signal | GPIO10 |
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