Custom Sensor Boards

The Rev Control Hub has plenty of digital ports (0-3.3V logic). Everything is just closing a circuit.

The “Break Beam” Project

Commercial break beams are huge.

• The Idea: Detect when a pixel is inside the claw.
• The Hardware: An IR LED (Emitter) and a Phototransistor (Receiver).
• The PCB: A tiny 10mm x 10mm board that fits inside your claw wall.

How to make it (JLCPCB)

1. KiCad: Draw the schematic. Connect VCC, GND, and SIGNAL.
2. Order: Get 5 boards for $2.
3. Assembly: Solder the tiny components (or pay $10 for assembly).

Why do this?

• Space: Fits where commercial sensors can’t.
• Cost: $2 vs $40.
• Flex: Judges love “Custom Electronics”.

Conclusion

Don’t be afraid of the green board. It sets your robot apart from the “Plug and Play” teams.