I recently purchased a chinese 140mm rotating plate for displaying watches etc. The switches control speed, an automatic reverse, and direction. Holding down the the left/right direction button will stop the rotation, after about 3 seconds. What I want: Replace the current controller with a cont…

Yep, the stepper driver is underneath the installed, commercial board. It also has a LED, and a micro USB port supplying just 5 volts. The other board is loose and a ULN2003 driver that comes with the purchase of the 28BYJ-48 stepper motor. If you have one, turn it over and have a look, because yo…

[image] argusy: Can anyone give me some pointers on how to program this? Countless tutorials on line, easily discovered by the search phrase "arduino 28byj-48"

Wow! So that is what the 28JBY-48 stepper motor is actually used for. :astonished: Presumably not the only thing, but now we know the answer - one answer - to that puzzle. The ULN2003 is a very poor choice for controlling a stepper motor, particularly at 5 V or even less - whatever the controller…

You can buy them from wish for about $16, Ebay at $25, and Amazon for $28. Up to about $400 via a display shop, but even at $16, my decision to buy one was not for a 'plaything', thank you very much.

[image] Paul_B: So that is what the 28JBY-48 stepper motor is actually used for. :astonished: 12V version for sweeping vanes in AC outlet and operation of mechanism in table top ice making machine. Tom... :smiley: :+1: :coffee: :australia:

Actually, the ULN2003 is fine for this project. In fact when you buy such a motor and driver it usually has a ULN2003 There are basically 4 pins on the ULN2003 (IN1 to IN4). You pulse each one of these in turn and the motor turns. I have experimented with the 5V version of these motor and drivers, …

[image] argusy: my decision to buy one was not for a 'plaything', thank you very much. Didn't suggest it was. :astonished: But you do have a use for it. If I was to buy one - $12.33 + GST Australian - it would be to experiment with as I cannot offhand think of what I would display on it. …

Thanks for the info I bought a Jaycar Duinotech learning kit, and having some fun with it. This is a bit like when I learnt Visual basic 6 about 20 years ago, so I understand the syntax and the construction problems I've found a couple of programs for the stepper (and tried them) - now I've got t…

Hi Paul, Yeah... when I started this exercise, I wanted a rotating display yesterday, but I had to wait. I bought two, and promptly took one to pieces, to see what was inside

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Projects General Guidance

lastchancename July 12, 2021, 8:38am 2

What’s on the bottom the two boards - especially the button board…

The chip shown is probably a micro (PIC?)
I suspect the stepper driver is underneath the button board.

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