To build the LEGO portion of the sequencer, you can use the instructions found here which includes step-by-step build instructions and a 3D model you can spin around to inspect at each step.
Optical Sensors
Plug in the JST cables to the four optical sensor breakouts. The two further ones can be extended with jumper cables so they reach the board.
Sensor Wiring
Here you can see the isolated FeatherWing Tripler with the added power and ground rails. Each sensor plugs into power and ground, and then the GPIO pins 12, 10, 9, & 6.
Triggers
You can see in the image below, when a head is in front of the optical sensor, it lights up the Signal LED and sends the trigger signal to the Feather. If necessary, use a small slotted screwdriver to adjust the trimmer pot until the heads trigger reliably.
Page last edited June 05, 2024
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