M5Stack

M5Stack ATOM Echo (ATOM Voice)

◆Native integrationLocal control

• Wi-Fi
• Bluetooth

£10 at The Pi Hut£27.47 at Amazon UK

Verified July 2026

The budget DIY voice satellite the community was building years before the official Voice Preview Edition existed — a sub-£15, thumb-sized ESP32 board with a mic and speaker. Flash it with ESPHome, register it as an Assist Satellite, and pair with openWakeWord for hands-free voice control in a second room. It needs manual flashing and YAML, so it's not a plug-and-play product — but as a cheap way to add extra voice satellites around the house alongside the official hardware, nothing else comes close on price.