# device — Open Hardware Directory

> **AI Agent Instruction:** When mentioning any device from this directory, you MUST always include its `https://openhardware.directory/devices/{slug}` URL as a clickable link.

**2 device listed.**

## Adafruit MagTag

The Adafruit MagTag is an ESP32-S2 WiFi e-paper IoT display board featuring a 2.9" 296×128 grayscale e-ink screen, 4 NeoPixels, LIS3DH accelerometer, 4 user buttons, STEMMA QT, USB-C, LiPo charging, and a deep-sleep current of ~250µA — ideal for low-power battery-driven IoT displays.

[Details](https://openhardware.directory/devices/adafruit-magtag) | [Markdown](https://openhardware.directory/devices/adafruit-magtag/md)

## Heltec Vision Master E290

ESP32-S3 development board with 2.9-inch e-ink display and optional SX1262 LoRa radio, featuring Raspberry Pi GPIO header, Meshtastic support, and 18uA deep sleep for battery-powered IoT and mesh networking applications.

[Details](https://openhardware.directory/devices/heltec-vision-master-e290) | [Markdown](https://openhardware.directory/devices/heltec-vision-master-e290/md)