AirMate IR gets smaller: one compact unit per AC, every AC in one app

You asked whether one AirMate can run several ACs. It can’t, and it shouldn’t: infrared needs a clear line to each AC’s receiver, and the radar’s job is to decide whether its own room is empty. So the plan is one AirMate per AC, and that only works if each one is small and cheap enough not to be noticed.

Smaller hardware

• 48 × 48 × 20 mm, down from 70 × 70 × 25 mm: under half the volume and about 30 g.
• Keyhole slots on the back for the wall below or beside the AC, or a small 12° stand for a shelf.
• The same parts inside: ESP32-C6, 24 GHz radar behind a thinned front wall, SHT45 by the vents, and four IR LEDs behind a 34 × 6 mm window.
• The board shrinks to about 40 × 40 mm. The two risks we test first are now tighter: Wi-Fi antenna clearance and the temperature sensor warming up from the ESP32 in a smaller box.

The CAD is regenerated from the same code. You can rotate and explode it on the build kit page.

Central control in the app

The app prototype now opens on All rooms: every AirMate with its presence, room temperature and AC state, plus All off, Eco 25 °C and All on, and one switch to apply the same comfort rules everywhere. Each AirMate still makes its own decision locally, so a room keeps working if the internet drops. Home Assistant works with the prototype firmware today; Matter and a dashboard for hotels and offices are planned.

More on how it connects to your AC is on the connect page.