# M5Stack AtomS3

> Ultra-compact ESP32-S3 dev board (24x24mm) with 0.85" IPS LCD (128x128), 6-axis IMU, 8MB flash, Wi-Fi, BLE 5.0, USB-C, and Grove port. Ideal for IoT prototyping and embedded UI projects.

## Quick Facts

- **Brand:** M5Stack
- **Board Type:** dev-board
- **Price:** ~$15.5
- **Product Readiness:** developer
- **CPU:** ESP32-S3
- **CPU Architecture:** Xtensa LX7 Dual-Core
- **CPU Cores:** 2
- **RAM:** 512KB SRAM
- **Flash:** 8MB
- **USB:** USB-C
- **Power:** 5V DC
- **Operating Voltage:** 3.3V
- **Antenna:** Built-in PCB antenna
- **Display:** 0.85" IPS LCD 128x128

## Connectivity

- **Wifi:** 802.11 b/g/n
- **Bluetooth:** BLE 5.0

## Open Source

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

## Compatible Firmware

arduino, esp-idf, uiflow, micropython, platformio

## Use Cases

- iot-prototyping
- wearable
- embedded-ui
- sensor-node

## Components

- **ESP32-S3FN8** (MCU): Espressif ESP32-S3 SoC with 8MB embedded flash, dual-core Xtensa LX7 at 240MHz, Wi-Fi 802.11 b/g/n and Bluetooth LE 5.0 — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwww.espressif.com%2Fsites%2Fdefault%2Ffiles%2Fdocumentation%2Fesp32-s3_datasheet_en.pdf&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- **MPU6886** (IMU): TDK InvenSense 6-axis MEMS IMU with 3-axis gyroscope and 3-axis accelerometer, I2C interface — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Finvensense.tdk.com%2Fwp-content%2Fuploads%2F2021%2F12%2FDS-000451-MPU-6886-TYP-v1.3.pdf&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- **0.85" IPS LCD** (Display): 128x128 pixel IPS LCD for compact UI rendering and status display — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.m5stack.com%2Fen%2Fcore%2FAtomS3&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- **Infrared LED** (LED): Built-in IR LED for infrared remote control signal transmission — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.m5stack.com%2Fen%2Fcore%2FAtomS3&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- **Grove Port** (Connector): 4-pin Grove connector (I2C) for plug-and-play sensor and actuator modules — [Datasheet](https://openhardware.directory/r?to=https%3A%2F%2Fwiki.seeedstudio.com%2FGrove_System%2F&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)

## Protocols

- **I2C**
- **SPI**
- **UART**
- **GPIO**

## Description

# M5Stack AtomS3

The M5Stack AtomS3 is an ultra-compact ESP32-S3 development board measuring just 24x24x12.9mm and weighing only 6.9g. Despite its tiny size, it packs a 0.85-inch IPS LCD display (128x128), a 6-axis IMU (MPU6886), infrared LED, programmable button, and a Grove expansion port.

## Key Features

- **ESP32-S3FN8** dual-core processor with Wi-Fi and BLE 5.0
- **0.85" IPS LCD** display (128x128 pixels) for embedded UI
- **MPU6886** 6-axis IMU (accelerometer + gyroscope) for motion sensing
- **8MB Flash** and **512KB SRAM** for program storage
- **Grove port** for easy sensor and actuator expansion
- **Infrared LED** for IR remote control applications
- **USB-C** for power and programming
- **6 GPIOs** available (G5, G6, G7, G8, G38, G39)

## Development Platforms

The AtomS3 supports Arduino IDE, ESP-IDF, UIFlow 2, MicroPython, and PlatformIO, making it accessible to both beginners and experienced developers.

## Specifications

| Spec | Value |
|------|-------|
| Processor | ESP32-S3FN8 (Xtensa LX7 Dual-Core, 240MHz) |
| Flash | 8MB |
| SRAM | 512KB |
| Display | 0.85" IPS LCD, 128x128 |
| IMU | MPU6886 (6-axis) |
| Connectivity | Wi-Fi 802.11 b/g/n, BLE 5.0 |
| Power | 5V via USB-C, 3.3V output |
| GPIO | 6 pins |
| Dimensions | 24.0 x 24.0 x 12.9 mm |
| Weight | 6.9g |
| Operating Temp | 0-40°C |

## Where to Buy

- [M5Stack Official](https://openhardware.directory/r?to=https%3A%2F%2Fshop.m5stack.com%2Fproducts%2Fatoms3-dev-kit-w-0-85-inch-screen&ref=openhardware.directory&product=m5stack-atoms3&source=md-export) — $15.50
- [OpenELab](https://openhardware.directory/r?to=https%3A%2F%2Fopenelab.io%2Fproducts%2Fm5stack-atoms3devkit&ref=openhardware.directory&product=m5stack-atoms3&source=md-export) — $16.15

## Resources

- [product](https://openhardware.directory/r?to=https%3A%2F%2Fshop.m5stack.com%2Fproducts%2Fatoms3-dev-kit-w-0-85-inch-screen&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- [wiki](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.m5stack.com%2Fen%2Fcore%2FAtomS3&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- [github](https://openhardware.directory/r?to=https%3A%2F%2Fgithub.com%2Fm5stack%2FM5AtomS3&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)
- [schematics](https://openhardware.directory/r?to=https%3A%2F%2Fdocs.m5stack.com%2Fen%2Fcore%2FAtomS3&ref=openhardware.directory&product=m5stack-atoms3&source=md-export)

## Tags

`esp32-s3`, `m5stack`, `imu`, `lcd`, `compact`, `grove`, `iot`

## Images

![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/a1e999c5f062.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/7cd8f106a0a8.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/1f1f1878ee91.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/fcb1a5a4bf31.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/b67855f9650b.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/31eade110faf.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/995f6904fe71.jpg)
![M5Stack AtomS3](https://nbg1.your-objectstorage.com/openhardware-directory/entities/m5stack-atoms3/1f8ab2c4d065.jpg)

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