Time your laps with just a phone

Plug a C5MK receiver into your phone or laptop, pick your quad's channel and fly. Every pass through the gate is a lap.

1. 1
   Flash C5MK onto an ESP32-C5

   With the C5 flasher, and fit a 5.8 GHz antenna.
2. 2
   Plug it in

   Into an Android phone (USB-C) or a computer. Put it near your gate.
3. 3
   Press Connect

   Pick the C5 from the list. Next time it connects by itself.

Pilots

Fly past the gate: the bar jumps and "pass seen" lights up. If it doesn't, try High sensitivity.