New
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No-contact triggerA moving flag enters the optical slot; nothing needs to press the board.
Visible statusThe onboard LED makes alignment and commissioning easier.
Compact mounting28 × 22 mm board with 20 × 12 mm mounting centers.
PiBot-readyDocumented for V5.88, V4.96, V5.77 and V4.7B controllers.
Three wires, one clear rule
SIGNAL→GND→+5V
Power off before connecting. Set the controller's SW-VCC selector to 5 V. Never use the Vmot / 12–24 V position for this module, and do not identify pins by cable color alone.
INSTALLATION CHECK
Align, trigger, verify
1. Mount the board
Keep the optical slot clear and align a solid moving flag through its center.
Keep the optical slot clear and align a solid moving flag through its center.
2. Check the LED
The indicator should change when the flag blocks the slot.
The indicator should change when the flag blocks the slot.
3. Check the controller
Only the selected limit input should change, then return when the slot is clear.
Only the selected limit input should change, then return when the slot is clear.
Size and package
Open wiring guide & schematic →Best for clean, repeatable non-contact homingUse a rigid opaque flag, leave clearance around the optical slot, and verify the final input polarity in your machine configuration before enabling hard limits.
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