During Corona I bought an electrically height-adjustable desk. Back then I created a small ESPHome based project that allows controlling the desk using keyboard shortcuts without modifying the controller. I have been using it almost daily since then, but never finished the writeup. Better late than never.
Telink SoCs like the TLSR8258 are widely used in cheap IoT devices. Wouldn’t it be neat to have a customizable, power-efficient Zigbee device for a few euros? I certainly thought so. To program and debug these chips Telink uses a proprietary single-wire protocol.