# ESP32-C6-WROOM-1-N4 Module

> Espressif ESP32-C6 WROOM module with 4MB flash and PCB antenna, supporting Wi-Fi 6 (802.11ax), Bluetooth 5 LE, Zigbee 3.0, and Thread — for soldering onto custom IoT hardware.

## Quick Facts

- **Brand:** Espressif
- **Board Type:** module
- **Price:** ~$2.95
- **Product Readiness:** developer
- **CPU:** ESP32-C6
- **CPU Architecture:** RISC-V 32-bit
- **CPU Cores:** 1
- **RAM:** 512KB SRAM
- **Flash:** 4MB
- **Power:** 3.3V supply rail
- **Operating Voltage:** 3.3V
- **Dimensions:** 25.5 x 18.0 x 3.2 mm
- **Antenna:** Built-in PCB antenna

## Connectivity

- **Wifi:** 802.11ax (Wi-Fi 6)
- **Bluetooth:** BLE 5.0
- **Zigbee:** 3.0
- **Thread:** 1.3

## Open Source

- **Firmware:** Yes
- **Schematics:** No
- **PCB Layout:** No

## Certifications

RoHS

## Compatible Firmware

esp-idf, arduino

## Use Cases

- iot
- smart-home
- industrial
- prototyping

## Components

- **ESP32-C6** (mcu): Espressif 32-bit RISC-V SoC with Wi-Fi 6, BT5 LE, Zigbee, Thread, 512KB SRAM. — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5670%2Fesp32-c6-wroom-1_wroom-1u_datasheet_en.pdf&ref=openhardware.directory&product=esp32-c6-wroom-1-n4&source=md-export)

## Protocols

- **I2C**: SDA: GPIO6, SCL: GPIO7
- **SPI**: MOSI: GPIO7, MISO: GPIO2, SCK: GPIO6
- **UART**: TX: GPIO16, RX: GPIO17
- **I2S**: 
- **PWM**: 

## GPIO Map

| Pin | Name | Type | Functions |
|-----|------|------|-----------|
| GPIO0 | D0 | GPIO | digital, adc |
| GPIO1 | D1 | GPIO | digital, adc |
| GPIO2 | MISO | SPI | spi-miso, digital, adc |
| GPIO3 | D3 | GPIO | digital, adc |
| GPIO4 | D4 | GPIO | digital, adc |
| GPIO5 | D5 | GPIO | digital, adc |
| GPIO6 | SDA / SCK | I2C | i2c-sda, spi-sck, digital |
| GPIO7 | SCL / MOSI | I2C | i2c-scl, spi-mosi, digital |
| GPIO8 | D8 | GPIO | digital |
| GPIO9 | D9 | GPIO | digital |
| GPIO10 | D10 | GPIO | digital |
| GPIO11 | D11 | GPIO | digital |
| GPIO12 | D12 | GPIO | digital |
| GPIO13 | D13 | GPIO | digital |
| GPIO14 | D14 | GPIO | digital |
| GPIO15 | D15 | GPIO | digital |
| GPIO16 | TX | UART | uart-tx, digital |
| GPIO17 | RX | UART | uart-rx, digital |
| GPIO18 | D18 | GPIO | digital |
| GPIO19 | D19 | GPIO | digital |
| GPIO20 | D20 | GPIO | digital |
| GPIO21 | D21 | GPIO | digital |
| GPIO22 | D22 | GPIO | digital |

## Description

## Overview

The ESP32-C6-WROOM-1-N4 is a compact surface-mount Wi-Fi 6 and 802.15.4 combo module from Espressif, built around the ESP32-C6 SoC. Unlike a complete development board, this is a bare engineering module intended for advanced users who solder it directly onto their own PCB designs. It measures 25.5 × 18.0 × 3.2 mm and includes a PCB antenna, making external antenna hardware unnecessary for most applications.

The ESP32-C6 RISC-V core runs at up to 160 MHz and delivers excellent low-power performance for battery-operated IoT devices. Wireless capabilities span Wi-Fi 6 (802.11ax, 2.4 GHz only), Bluetooth 5 LE, Zigbee 3.0, and Thread — covering virtually every modern IoT wireless protocol. The module carries 4 MB of Quad SPI flash, 512 KB SRAM, and 16 KB of low-power SRAM for deep-sleep tasks.

With up to 30 GPIO pins (QFN40 package) supporting SPI, UART, I2C, I2S, RMT, TWAI, and PWM, it is well-suited for smart home devices, industrial sensors, and wearable electronics. The 4MB variant (N4) is no longer stocked by Adafruit; the 8MB N8 variant (product 5671) remains available.

## Where to Buy

- [Adafruit](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5670&ref=openhardware.directory&product=esp32-c6-wroom-1-n4&source=md-export) — 2.95

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fwww.adafruit.com%2Fproduct%2F5670&ref=openhardware.directory&product=esp32-c6-wroom-1-n4&source=md-export)
- [datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fcdn-shop.adafruit.com%2Fproduct-files%2F5670%2Fesp32-c6-wroom-1_wroom-1u_datasheet_en.pdf&ref=openhardware.directory&product=esp32-c6-wroom-1-n4&source=md-export)

## Tags

`esp32-c6`, `espressif`, `wifi6`, `zigbee`, `thread`, `ble`, `module`, `wroom`

## Images

![ESP32-C6-WROOM-1-N4 Module](https://nbg1.your-objectstorage.com/openhardware-directory/entities/esp32-c6-wroom-1-n4/ac9e0d3e36ae.jpg)
![ESP32-C6-WROOM-1-N4 Module](https://nbg1.your-objectstorage.com/openhardware-directory/entities/esp32-c6-wroom-1-n4/cc8852a15e0a.jpg)

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