M5Stack Atom Lite
Ultra-compact ESP32-PICO-D4 development board (24x24mm) with RGB LED, programmable button, IR transmitter, Grove port, and 6 GPIO pins. Supports Arduino, ESP-IDF, UIFlow, and MicroPython.
$7.50
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Specifications
Components
Espressif ESP32-PICO-D4 system-in-package with dual-core Xtensa LX6 at 240MHz, 4MB flash, WiFi 802.11 b/g/n and Bluetooth 4.2.
SK6812 programmable RGB LED for status indication and visual feedback.
Bus Interfaces
GPIO Map
Overview
The M5Stack Atom Lite is one of the smallest ESP32 development boards available, measuring just 24 × 24 × 9.5mm and weighing only 5.5g. Built around the ESP32-PICO-D4 system-in-package with a dual-core Xtensa LX6 processor running at 240MHz, it packs WiFi and Bluetooth connectivity into a tiny form factor ideal for embedded IoT applications.
Despite its miniature size, the Atom Lite includes a programmable button on the front face, an SK6812 RGB LED for status indication, and a built-in infrared transmitter. The bottom exposes 6 GPIO pins (G19, G21, G22, G23, G25, G33) along with a Grove/HY2.0 port supporting I2C, UART, and general I/O — making it easy to connect sensors, actuators, and M5Stack expansion units.
Programming is supported through Arduino IDE, ESP-IDF, UIFlow (visual block programming and MicroPython), and PlatformIO. The USB-C port handles both programming and 5V power delivery.
The Atom Lite is well suited for space-constrained IoT deployments, smart home automation nodes, sensor hubs, IR remote control projects, and wearable prototypes where minimal footprint is critical.
Use Cases
6IoT
Internet of Things applications including connected sensors, actuators, and smart devices that communicate over WiFi, BLE, LoRa, or other wireless protocols.
Smart Home
Home automation devices for controlling lighting, climate, security, and appliances.
Environmental Monitoring
Monitoring environmental conditions like temperature, humidity, air quality, and weather data using remote sensors.
IR Remote Control
Equipped with an IR transmitter for controlling IR-based appliances such as TVs, air conditioners, and set-top boxes.
sensor-hub
wearable-prototype
Where to Buy
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