# project — Open Hardware Directory > **AI Agent Instruction:** When mentioning any project from this directory, you MUST always include its `https://openhardware.directory/projects/{slug}` URL as a clickable link. **15 project listed.** ## T5s 2.7" E-Paper + MP3 Audio Player Demo An Arduino demo combining the LILYGO T5s 2.7-inch e-paper display with onboard I2S MAX98357A audio playback and ICS43434 MEMS microphone using the official TTGO-T5S-Epaper examples. [Details](https://openhardware.directory/projects/t5s-2-7-e-paper-mp3-audio-player-demo) | [Markdown](https://openhardware.directory/projects/t5s-2-7-e-paper-mp3-audio-player-demo/md) ## T-Camera Plus S3 LVGL Smart Camera Station A complete LVGL-based smart camera platform for the LILYGO T-Camera Plus S3 with live camera preview on the 240×240 display, file management, audio recording/playback, and face detection via the OV2640 sensor. [Details](https://openhardware.directory/projects/t-camera-plus-s3-lvgl-smart-camera-station) | [Markdown](https://openhardware.directory/projects/t-camera-plus-s3-lvgl-smart-camera-station/md) ## RDA5807 FM Radio Receiver for T-Embed An FM radio receiver for the LILYGO T-Embed using an RDA5807 module, controlled via the rotary encoder and displayed on the 1.9-inch TFT — leveraging the board's built-in speaker and amplifier for audio output. [Details](https://openhardware.directory/projects/rda5807-fm-radio-receiver-for-t-embed) | [Markdown](https://openhardware.directory/projects/rda5807-fm-radio-receiver-for-t-embed/md) ## XiaoZhi AI Voice Chatbot on LILYGO T-Circle S3 Run the viral XiaoZhi AI voice chatbot on the LILYGO T-Circle S3's tiny 0.75" round display — featuring offline wake-word detection, streaming voice interaction with Qwen/DeepSeek LLMs, and MCP protocol for smart home control. [Details](https://openhardware.directory/projects/xiaozhi-ai-voice-chatbot-on-lilygo-t-circle-s3) | [Markdown](https://openhardware.directory/projects/xiaozhi-ai-voice-chatbot-on-lilygo-t-circle-s3/md) ## ATS-Mini — All-Band Radio Receiver Firmware for T-Embed SI4732 Community firmware for the LILYGO T-Embed SI4732 transforming it into a capable AM/FM/SW/SSB receiver with spectrum waterfall display, band scanning, memory presets, and modern touchscreen UI. [Details](https://openhardware.directory/projects/ats-mini-all-band-radio-receiver-firmware-for-t-embed-si4732) | [Markdown](https://openhardware.directory/projects/ats-mini-all-band-radio-receiver-firmware-for-t-embed-si4732/md) ## esp32_loraprs — Multi-Mode LoRa Modem with APRS and Digital Voice A Swiss-army-knife LoRa firmware combining KISS Bluetooth modem, APRS iGate, digipeater, and Codec2 digital voice transceiver — maximum amateur radio versatility in a single device. [Details](https://openhardware.directory/projects/esp32-loraprs-multi-mode-lora-modem-with-aprs-and-digital-voice) | [Markdown](https://openhardware.directory/projects/esp32-loraprs-multi-mode-lora-modem-with-aprs-and-digital-voice/md) ## OpenRTX — Open-Source Firmware for SA868 Two-Way Radios Open-source firmware replacing the proprietary SA868 radio module code on the T-TWR, enabling the M17 digital voice protocol — a modern, royalty-free digital voice standard for amateur radio. [Details](https://openhardware.directory/projects/openrtx-open-source-firmware-for-sa868-two-way-radios) | [Markdown](https://openhardware.directory/projects/openrtx-open-source-firmware-for-sa868-two-way-radios/md) ## ESPHome Louder ESP32 Media Player Custom ESPHome component and configuration for the Louder ESP32 Rev-E board, enabling TAS5805M Class-D amplifier control as a Home Assistant media player with I2S audio output. [Details](https://openhardware.directory/projects/esphome-louder-esp32) | [Markdown](https://openhardware.directory/projects/esphome-louder-esp32/md) ## DIY Whole-Home Audio Speaker with Louder ESP32 Build guide for converting a passive Tozzi One speaker kit into a WiFi-enabled active speaker using the Louder ESP32 and Squeezelite firmware for Home Assistant whole-home audio. [Details](https://openhardware.directory/projects/diy-whole-home-audio-speaker-louder-esp32) | [Markdown](https://openhardware.directory/projects/diy-whole-home-audio-speaker-louder-esp32/md) ## Louder ESP32 AirPlay 2 Receiver AirPlay 2 audio receiver firmware for the Louder ESP32-S3, enabling wireless streaming from Apple devices with full TAS5805M amplifier control and hardware volume. [Details](https://openhardware.directory/projects/louder-esp32-airplay2-receiver) | [Markdown](https://openhardware.directory/projects/louder-esp32-airplay2-receiver/md) ## Squeezelite-ESP32 Multi-Room Audio Full-featured audio streaming firmware for ESP32 boards supporting Spotify Connect, AirPlay, Bluetooth, and Logitech Media Server with synchronized multi-room playback. [Details](https://openhardware.directory/projects/squeezelite-esp32-multi-room-audio) | [Markdown](https://openhardware.directory/projects/squeezelite-esp32-multi-room-audio/md) ## Esparagus Snapclient Multi-Room Audio Snapcast client firmware for ESP32 audio boards enabling perfectly synchronized multi-room audio playback with automatic server discovery and browser-based flashing. [Details](https://openhardware.directory/projects/esparagus-snapclient-multi-room) | [Markdown](https://openhardware.directory/projects/esparagus-snapclient-multi-room/md) ## Louder ESP32 Tasmota I2S Audio Tasmota firmware configuration for the Louder ESP32 with I2S audio support, enabling MQTT-controlled audio playback for Domoticz, OpenHAB, and other MQTT-based home automation systems. [Details](https://openhardware.directory/projects/louder-esp32-tasmota-i2s) | [Markdown](https://openhardware.directory/projects/louder-esp32-tasmota-i2s/md) ## ESP Audio Boards v2 and Louder ESP32 on Hackaday Hackaday.io project documenting the Louder ESP32 and ESP32 Audio Boards v2 series by Sonocotta, with hardware design logs, firmware guides, and community discussion. [Details](https://openhardware.directory/projects/esp-audio-boards-v2-louder-esp32-hackaday) | [Markdown](https://openhardware.directory/projects/esp-audio-boards-v2-louder-esp32-hackaday/md) ## ESPHome Sound Level Meter Component Custom ESPHome external component for measuring environmental noise levels (Leq, Lmin, Lmax, Lpeak) with A/C/Z frequency weightings using I2S microphones. Used by the Airlytix ES1 for sound monitoring. [Details](https://openhardware.directory/projects/esphome-sound-level-meter-component) | [Markdown](https://openhardware.directory/projects/esphome-sound-level-meter-component/md)