# 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.**

## LILYGO T-TWR Rev2.1

LILYGO T-TWR Rev2.1 is an ESP32-S3 based programmable walkie-talkie board featuring the SA868 UHF/VHF radio module, GPS, OLED display, and battery support for amateur radio applications.

[Details](https://openhardware.directory/devices/lilygo-t-twr-rev2-1) | [Markdown](https://openhardware.directory/devices/lilygo-t-twr-rev2-1/md)

## LILYGO T5 4.7-inch E-Paper V2.3

ESP32-S3 e-paper development board with 4.7-inch 540×960 16-grayscale display (EDO47TC1), Wi-Fi, Bluetooth 5.0, PCF8563 RTC, 16MB flash, 8MB PSRAM, and optional capacitive touch overlay.

[Details](https://openhardware.directory/devices/lilygo-t5-4-7-e-paper-v2-3) | [Markdown](https://openhardware.directory/devices/lilygo-t5-4-7-e-paper-v2-3/md)