Espressif ESP32-C6-DevKitM-1

by Espressif

Compact official ESP32-C6 dev board with Wi-Fi 6, BLE, and Thread - ideal for Matter, mesh, and low-power IoT projects.

2× USB-C Native USB

Buy on Amazon · $8.00 More sellers Pinout Datasheet ↗

48.26 × 25.4 mm

ESP32-C6

RISC-V MCU

160MHz

clock

4MB

flash

512KB

SRAM

22· 7 ADC

GPIO

BLE 5.3+ WiFi

radio

Pinout

30 pins · 2.54 mm pitch

View:

Espressif ESP32-C6-DevKitM-1 pinout diagram

Pin	GPIO	Labels	Status	Capabilities	Notes
1	-	3V33.3V	power	-	Left header (J1). 3.3 V power supply.
2	-	ENRST	control	-	Left header (J1). Chip reset / enable, active low (high powers up, low powers down).
3	2	IO2	safe	adc	Left header (J1). GPIO; ADC1 channel 2.
4	3	IO3	safe	adc	Left header (J1). GPIO; ADC1 channel 3.
5	4	IO4MTMS	strapping	adc	Left header (J1). GPIO; ADC1 channel 4; JTAG MTMS.
6	5	IO5MTDI	strapping	adc	Left header (J1). GPIO; ADC1 channel 5; JTAG MTDI.
7	0	IO0XTAL_32K_P	safe	adc	Left header (J1). GPIO; ADC1 channel 0; 32.768 kHz crystal input (XTAL_32K_P).
8	1	IO1XTAL_32K_N	safe	adc	Left header (J1). GPIO; ADC1 channel 1; 32.768 kHz crystal input (XTAL_32K_N).
9	8	IO8	strapping	-	Left header (J1). GPIO; drives the onboard RGB LED; strapping pin (boot mode).
10	6	IO6MTCK	strapping	adc	Left header (J1). GPIO; ADC1 channel 6; JTAG MTCK.
11	7	IO7MTDO	strapping	-	Left header (J1). GPIO; JTAG MTDO.
12	14	IO14	safe	-	Left header (J1). GPIO.
13	-	GND	ground	-	Left header (J1). Ground.
14	-	5V	power	-	Left header (J1). 5 V power supply.
15	-	GND	ground	-	Left header (J1). Ground.
16	-	GND	ground	-	Right header (J3). Ground.
17	16	TXIO16U0TXD	uart	uart	Right header (J3). GPIO; UART0 TX (default serial console).
18	17	RXIO17U0RXD	uart	uart	Right header (J3). GPIO; UART0 RX (default serial console).
19	23	IO23SDIO_DATA3	safe	-	Right header (J3). GPIO; SDIO data 3.
20	22	IO22SDIO_DATA2	safe	-	Right header (J3). GPIO; SDIO data 2.
21	21	IO21SDIO_DATA1	safe	-	Right header (J3). GPIO; SDIO data 1.
22	20	IO20SDIO_DATA0	safe	-	Right header (J3). GPIO; SDIO data 0.
23	19	IO19SDIO_CLK	strapping	-	Right header (J3). GPIO; SDIO clock.
24	18	IO18SDIO_CMD	strapping	-	Right header (J3). GPIO; SDIO command.
25	15	IO15	strapping	-	Right header (J3). GPIO; strapping pin (boot mode).
26	9	IO9	strapping	-	Right header (J3). GPIO; strapping pin; wired to the BOOT button.
27	-	GND	ground	-	Right header (J3). Ground.
28	13	IO13USB_D+	uart	-	Right header (J3). GPIO; USB D+ (native USB-Serial-JTAG).
29	12	IO12USB_D-	uart	-	Right header (J3). GPIO; USB D- (native USB-Serial-JTAG).
30	-	GND	ground	-	Right header (J3). Ground.

Start with these

9 pins with no boot or system involvement

IO2IO3IO0XTAL_32K_PIO1XTAL_32K_NIO14IO23SDIO_DATA3IO22SDIO_DATA2IO21SDIO_DATA1IO20SDIO_DATA0

Freely assignable - no strapping, flash, USB or JTAG duties. Ideal first picks for buttons, sensors and LEDs.

Fine - with a little care

sampled at boot or shared with debug/serial

Pin	Label	What to know	Role
IO4	MTMS	Used during boot; required for JTAG debugging; flash data in internal-flash models.	Strapping
IO5	MTDI	Used during boot; required for JTAG debugging; flash data in internal-flash models.	Strapping
IO8	GPIO8	Determines boot mode; pulling low at reset can prevent normal boot.	Strapping
IO6	MTCK	Required for JTAG debugging; connected to flash clock in internal-flash models.	JTAG
IO7	MTDO	Required for JTAG debugging; connected to flash data in internal-flash models.	JTAG
TX	U0TXD	Default UART0 transmit pin; using it may interfere with serial console or programming.	UART
RX	U0RXD	Default UART0 receive pin; using it may interfere with serial console or programming.	UART
IO15	JTAG_SEL	Controls JTAG input source at boot; avoid altering its state.	JTAG
IO9	GPIO9	Pulling low on reset forces the ESP32-C6 into download mode instead of normal boot.	Strapping

Only if you know the tricks

wired to flash or USB - expect a fight

Pin	Label	What to know	Role
IO19	FSPID	Connected to internal flash; using as GPIO can disrupt flash operations.	Flash
IO18	FSPIQ	Connected to internal flash; using as GPIO can disrupt flash operations.	Flash
IO13	USB_D+	Dedicated to USB communication; avoid if using USB functionality.	USB
IO12	USB_D-	Dedicated to USB communication; avoid if using USB functionality.	USB

These are recommendations, not hard rules - with the right pull-ups, timing and boot-state awareness most pins can be made to work. When in doubt, start green.

Pinout notes The Espressif ESP32-C6-DevKitM-1 breaks out 30 pins in total: 22 GPIO for your project, with 3V3 , GND and 5V handling power. For peripherals, TX / RX on…

The Espressif ESP32-C6-DevKitM-1 breaks out 30 pins in total: 22 GPIO for your project, with 3V3, GND and 5V handling power.

For peripherals, TX/RX on GPIO16 and GPIO17 cover serial logging and flashing.

On the analog side there are 7 ADC-capable pins for sensors and battery monitoring.

If you want zero surprises, IO2, IO3, IO0, IO1 and 5 more are free of any such role - the safest first picks. 9 of the exposed pins carry boot-time or system duties on the ESP32-C6 (IO4, IO5, IO8 and 6 more).

Getting started

flash your first firmware in ~2 minutes

Tool:

Connect over USB

Serial chip: CP2102N. Not detected? Hold BOOT while plugging in.

Flash with your tool

Arduino IDE, PlatformIO, ESPHome or esptool - copy the settings on the right.

Verify it runs

The blink example uses GPIO2 - swap for your board's LED pin if different.

Tools → Board settings Copy

Board:            Esp32 C6 Devkitm 1
Flash Size:       4MB · DIO
Upload Speed:     921600

// blink
pinMode(2, OUTPUT);
digitalWrite(2, LOW);   // on (often inverted)

platformio.ini Copy

[env:esp32-c6-devkitm-1]
platform = espressif32
board = esp32-c6-devkitc-1
framework = arduino
monitor_speed = 115200
upload_speed = 921600

device.yaml Copy

esp32:
  board: esp32-c6-devkitc-1
  variant: esp32_c6_devkitm_1
  framework:
    type: esp-idf

# blink - GPIO2
output:
  - platform: gpio
    pin: 2
    id: led_out
light:
  - platform: binary
    name: "LED"
    output: led_out

shell Copy

esptool.py --chip esp32c6 --port /dev/ttyACM0 \
  write_flash 0x0 firmware.bin

Build details: sketch space 2097152 B · data 327680 B · DIO

Specifications

ESP32-C6 · 48.26 × 25.4 mm

Compute

MCU

ESP32-C6 · RISC-V

Clock

160 MHz

SRAM · Flash

512 KB · 4MB

Radio

Wi-Fi

802.11 ax b/g/n

Bluetooth

5.3 LE

Antenna

PCB

I/O

GPIO · ADC

22 · 7

UART · I²C · SPI

2 · 2 · 2

PWM

6 channels

Power

USB

USB-C (UART) · USB-C (native)

Serial

CP2102N

Boot address

0x0

Flashing

Upload · OTA

esptool_py · esp_ota

Flash · Boot mode

DIO · DIO

Sketch · Data

2 MB · 320 KB

48.26 × 25.4 mm · pin pitch 2.54 mm

The Espressif ESP32-C6-DevKitM-1 uses esptool_py for firmware uploads, esp_ota for over-the-air (OTA) updates. Flash mode is DIO with DIO boot mode. The maximum sketch size is 2 MB with 320 KB available for data.

About this board

At its core is the ESP32-C6 - a RISC-V part adding Wi-Fi 6 plus Thread/Zigbee radios.

Expect to pay about $8.00 - less than the ~$10 most ESP32-C6 boards go for.

Onboard you'll find an addressable RGB LED (GPIO8) and Boot/Reset buttons.

Where to buy

prices are typical street prices

Espressif ESP32-C6-DevKitM-1

$8.00per unit, typical

AMZAmazon.com↗ ALIAliExpress↗

As an Amazon Associate, ESPboards earns from qualifying purchases.

Resources

Board datasheet docs.espressif.com↗ Schematic dl.espressif.com↗ ESP32-C6 datasheet espressif.com↗ ESP32-C6-DevKitM-1 User Guide (Espressif) docs.espressif.com↗Espressif ESP32-C6 Series Datasheet (pin functions, ADC1, strapping) espressif.com↗

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