The ring is attached the the plywood below & the motor to the plywood above. Then the motors will spin against that ring. There will be what I call a “Rotation Ring”, basically a big circle all the way around inside the cube. Since they repair them & they said the motor was 5 amps (pretty close to your 7.5 amps) It’s hard for me to justify spending $200 on something where the funds are supposed to be going to charity & it’ll only be on display for a week. The 2圆0A controllers seam to be a lot harder to find & a lot of money. I’m so glad you think I should use 30A per channel. I also think it should start out slow, then speed up, then slow down as it comes to a stop at the 90 deg.
I was thinking of having it choose randomly which level to turn & which direction it’ll rotate, so it’s not a repeating pattern.
then spin the other level maybe in the other direction. So you think 4 motors total? So, I’ll need a 4 channel control or 2x 2 channel controls…?Īctually no I didn’t want them to spin consistently in the same direction. I know that’s over my head, but might be fun one of these days… No I don’t think I’ll try to reverse engineer the controller. so it was much easier then the cube this year. I haven’t seen any other moving can sculptures, but I’m sure they’re out there. In the drawing I saw where they were placed but did not see how they were mounted to spin the level.Īgain, I think this is a cool project.read over the recent posts and fire your next round of questions and responses. Mechanical question: how are the motors engaging the cube level to spin it. Setting grandmother on fire when she stalls out on a hill is not acceptable! But I would guess its equally unacceptable to set a display of food for the homeless on fire so you should set your design spec at 30A per channel and continue designing from there. This is, of course, exactly the kind of high safety factor you would expect in a wheelchair. The stall and/or startup current can peak at several times this rating so the original controller provides a peak of 30A per channel to allow cool, safe operation across the motors range. The power formula is P=VI, where "I" is in Amps. This makes sense because the post above shows that the motors are 24V, 180W. My GUESS is that this is 60 amps max, meaning 30 amps per channel. If you are going to go with the motor controller (so you can do cool things like spin the cube levels both directions, etc) then you will want to match the 60A controller they came with.
#L298n motor driver board arduino full
THEREFORE, you may not need a full blown motor controller and we can recommend some simpler (less expensive) circuitry. HOWEVER, it sounds like all you need to is turn your motors on and let them run at a constant speed while they spin their cube level. Motor controllers allow you to change the speed of your motors, change their direction and in many cases they also include circuitry to monitor their current consumption and even calculate the number of rotations each has made via quadrature encoding. This will keep your design more straightforward and easier to implement since it is the same on each level. These wheelchair motors are wotkhorses.two per level will be enough. These sorts of hacks are one of the funniest things to do in this hobby.but for a beginner you need to start with components you have the data sheet on and start to understand how those data sheet values enable/restrict your design options.ĭo not put more than one motor on a channel, and you can build this with just two motors per level. If I or a lot of guys on this forum were tackling this project we would probably hack the existing controller. Here's a few suggestions to keep you moving forward.ĭon't try and reverse engineer the controller you have.
They had one of these can sculpture contests in the Jacksonville airport last year and the moving displays were by far the coolest.
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