See saw control experiment

Control experiment with an Arduino, servo and softpot, all parts laser cut or 3D printed

Notes
For see-saw control lab
1) Laser parts were cut on an Orion 60watt laser using Luan plywood. Luan is very cheap ~ $14 for a 4’x8’ sheet. You could make a dozen of these from that much material.
2) I used some micro wood screws M3x8 or M4x8 to put it together.
3) I used 3/8 and ¼ dowel wood for the shafts.
4) Any standard Servo will work, I used a Hitek HS-311 , or a Futaba S3003 either for under $10.00
5) When I glued main parts together; I used some scrap molding to make the parts square up on the sides. The better level it is the better it will work!
6) Servo connection to the gear is shown above. Make sure servo is centered on the gear.
7) See image above. It’s important to align the gears so there won’t be twisting forces. I used a level to get everything aligned. Device should move freely without any resistance for roughly -30 < Theta < 30.
8) Wiring diagram is sh