Dolly for Webcam

Move a webcam between adjustable positions on a track. The track is build by plugging together several "base" objects. The movement is driven by a stepper motor, which is controlled by an Arduino Nano. The endpoints are recognized by two light barriers KY-010.

The parameters for the gear were calculated with the rack & pinion calculator on the website https://www.otvinta.com .
Use two "pins" to fix the "Motorcarrier" to the "Carrier".

Electronic parts list:

Stepper motor Nema 7
Arduino Nano
Stepper driver A4988
2 Light barriers NY-010 (AZ-Delivery)
3 LEDs
3 Resistors 330 Ohm
1 Capacitor 100 uF
Power supply 5V
Power supply 9V
2 Connectors for power supplies