Help please I am developing a kinetic sculpture using 90 stepper motors & 11 Arduinos. Stepper with a 50mm pulley attached, with nylon to raise & lower a small 3D printed piece in various patterns. The assembly is 1200mm x 400mm with 18 x 5 matrix of stepper motors
All looking great including initial testing & prototypes. Then I decided to change stepper motors as initial ones too noisy, and stupidly I didn't re-test the concept (the original motors were geared BYJ type)
Now I'm nearing completion, and moved near completed project to a testbed where I can finally attach the spheres.
Problem With no power on the motors, the weight of the spheres (which are 3D printed & weigh 10 grams, but I want to attach a slightly heavier version at 19 gms) is enough for them to drop down to the extent of the nylon under gravity! I don't want to keep power on them continuously. Even with each stepper set to draw only about 10 mA, total current draw is in excess of 10 amps at 12 volts - and I think this too much for comfort running 24/7 ( I have 2 10A power supplies driving it)
Any suggestions on how to increase the friction of the nylon? I'm currently printing a smaller puller which will cause the nylon to rub over the hole instead of falling freely - have no idea if this might work or not.
But I'm asking if any others might have some suggestions for any possible solutions
Thanks in advance