Light Experimentation - Part 11: Prototype for Kinetic Set-up

We have prepared most of the necessary parts for the actual set-up but missing some 3D printed parts. We had a discussion with Grant and he mentioned that he has other ideas on the set-up that doesn't involve Arduino and programming. Instead of using a stepper motor that we were going to program, he intends to calculate the speed based on a suitable DC motor and 3D print customised gears to control the motion. The set-up proposed by Grant includes these main items:
1. Indonesian plywood
2. 3 rubber wheels swivel single ball bearing
3. Screws, washers, nails
4. 3D printed gears, spinners and holders
5. A DC motor

 Preparing the files for CNC wood cutting, got the plywood from Ban Heng

 Discussion with Grant and a sample of rubber wheel to get

 Starting the CNC wood cutting

 The cutting took about 1.5 hours, which was faster than I expected

 Sanding off the uneven and prickly edges for a smoother surface, took about 1.5 hours

 Designing the 3D print holders and spinners, printing took about 3 hours.

While waiting for the 3D print, we went for lunch and bought a 12V motor, 65RPM, it can hold up to 6kg, our set-up is about 4kg

 3D printed parts ready to be installed

 Prepping the crank

 Attaching crank to the upper wood plate

 Testing the spin

Prepping the wood spinner for crank

 Attaching 3 rubber wheels to wood spinner and crank

Attaching the 3D printed holders and spinners, these spinners are meant to minimise the friction of fishline motion

 I attached the remaining 4 after Grant's demo

Based on the DC motor speed, Grant did calculation and designed the gears to achieve the desired speed for the motion

Testing the motor

 Printing the gears

My neighbour does fishing and has a variety of fishlines, he gave me one that could hold up to 9kg

 Grant demonstrating the correct way on how to tie the fishline to the resin droplet holders securely

I did for the remaining 4. I prepped a backdrop stand at the workshop so we could test the set-up when ready. Next we will be assembling the set-up and do the testing.