Open AIR Mini

IoT Controller
Open AIR Mini

Open-source ESP32-based ventilation controller for Ducobox Silent/Focus and Orcon MVS-15xx systems with optional CO2, humidity, VOC, and NOx sensors, fully compatible with ESPHome and Home Assistant.

ESP32520KB SRAM4MBWiFi WiFi 4 (802.11 b/g/n)BLE BLE 4.2
~$70View

Louder ESP32

Audio Board
Louder ESP32

ESP32 audio development board with TAS5805M I2S Class-D amplifier delivering 2x23W stereo output, designed for multi-room audio, network streaming, and smart home integration.

Xtensa LX6 dual-core @ 240MHz, FPU, AES/SHA hardware crypto520KB SRAM8MBWiFi 802.11 b/g/nBLE BT 4.2 + BLEEthernet Optional W5500 SPI module
~$24View

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More to explore — popular traits shared by devices with USB: Micro-USB (programming).