ESP32-C3-DevKitM-1

Board
by Espressifesp32-c3-devkitm-1≈ cheap (under ~$15)
Verify my boardCompareEdit on GitHub
Flash this board — 3 firmware options · Known good
ESP32-C3-DevKitM-1 board
Board
ESP32-C3-DevKitM-1 pinout
Pinout

Specifications

Radiosinherited from ESP32-C3

Wi-Fi
Wi-Fi 4 · 2.4 GHz
Bluetooth LE
BLE 5
Bluetooth Classic
no
802.15.4
no

USB

Native USB
yes
Connector
micro-usb

Board

Form factor
devkit

Display & extras

Extras
rgb-led
Built onESP32-C3-DevKitM-1 BoardESP32-C3 SoC

Compact ESP32-C3-MINI-1 board with a single micro-USB (UART bridge) port and a GPIO8 addressable RGB LED.

Firmware for this board

Known good

  • WLEDKnown goodhomeweb flasher
    Flash WLEDweb flasherknown-good

    Known good esp-atlas asserts this board↔firmware link at the shown trust tier — it does not guarantee your specific unit or the current firmware version. Flashing can erase keys/config and can brick the device. At your own risk.

Unverified

  • NerdMiner v2Unverifieddisplay
    Flash NerdMiner v2guided

    Unverified esp-atlas asserts this board↔firmware link at the shown trust tier — it does not guarantee your specific unit or the current firmware version. Flashing can erase keys/config and can brick the device. At your own risk.

  • OpenMQTTGatewayUnverifiedhomeweb flasher
    Flash OpenMQTTGatewayweb flasher

    Unverified esp-atlas asserts this board↔firmware link at the shown trust tier — it does not guarantee your specific unit or the current firmware version. Flashing can erase keys/config and can brick the device. At your own risk.

Notes

  • Single micro-USB (power/flash/comms via on-board USB-to-UART bridge)
  • Bridge chip model not named in the official user guide (omitted)
  • Carries ESP32-C3-MINI-1 or -1U SiP module, 4 MB flash, no PSRAM
  • Addressable RGB LED on GPIO8
  • Dimensions only in a separate Dimensions PDF (omitted)
  • io.gpio_free=10 DERIVED, not quoted (SPEC-io-power.md §5.3). Headers J1+J3 break out 15 pads total (quoted from the user guide pin tables: J1 = GPIO 0-3,10; J3 = GPIO 4-9,18-21). Subtracting esp32-c3's soc.reserved_pins that are exposed -- strapping {2,8,9} (3) and usb_flash_tied {18,19} (2) -- gives 15 - 3 - 2 = 10. Math not vendor-stated; verify before treating as exact.

Verify my board

Reads the connected chip over USB and checks it against what esp-atlas cites for ESP32-C3-DevKitM-1 — over Web Serial, no backend, nothing leaves your browser.

In-browser verify needs Web Serial: Chrome or Edge on a desktop. Safari, Firefox and phones cannot do it.

Serial monitor

Not connected.