February 26, 2022, the Electrics
The Carousel already exists at the front of my street organ. It accelerates to top speed, runs, decelerates to a stop, and pauses (all for random periods of time). I want the Ferris Wheel to do the same thing, however not synchronous with the Carousel…I want them on different schedules. This is accomplished very easily using the Nano and making slight modifications to the Carousel software.
The Ferris Wheel and the Carousel operate independently of each other. Each is fully capable of operating by itself. Both use the 6vdc battery pack. Coincidentally each uses the same type of gear motor. I really like these gear motors. They seem to be very properly constructed. I expect them to last forever. And their current draw is in the range of .05 – .09 amps…very little.
The electrics package is 3D printed. It contains a Nano, a 5vdc buck regulator, and a Mosfet motor driver. It also has an on-off switch (which is normally left on).
I’ve run the Carousel and the Ferris Wheel together and they do well alongside each other. When the power switch is turned on they both start operating…they accelerate up to their top speeds. And then the ‘random’ coding kicks in and they stop and start independently of each other, rarely in sync.
I’m very pleased with the current draw. It seems that I’ll be able to get about 8 performances out of each battery charge. I’m glad that I installed a voltage display on the battery pack. Knowing the voltage permits me to ensure that I have enough charge. I’m planning on routinely recharging once a month. I suspect that will be enough.