▲ 28 r/esp32
I built a small tabletop game where four ESP32 controllers talk to a main ESP32 over ESP-NOW (no router, no cloud).
I built a small tabletop game where four ESP32 controllers talk to a main ESP32 over ESP-NOW (no router, no cloud).
Flow:
- Each player has their own controller (battery-powered ESP32)
- A marble is thrown into the controller → IR sensors in printed channels detect which “hole” was hit
- Score is sent wirelessly → camel moves (either on a physical track with steppers, or in a browser UI on a PC connected to the main unit)
Why ESP-NOW: low latency, simple pairing, works well for “throw → score → update” without juggling WiFi AP mode.
Hardware (short):
- ESP32 per controller + one main ESP32
- IR break-beam style sensing in 3D-printed parts
- Hardware mode adds 28BYJ-48 steppers + endstops on the main unit
u/Express_Pepper_7978 — 1 day ago