Driving a 28BYJ-48 Stepper Motor?

Questions and discussion about running MicroPython on a micro:bit board.
Target audience: MicroPython users with a micro:bit.
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pythoncoder
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Re: Driving a 28BYJ-48 Stepper Motor?

Post by pythoncoder » Tue Sep 19, 2017 10:38 am

One way is to use something like this https://www.pololu.com/product/2842.
Peter Hinch
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mattyt
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Re: Driving a 28BYJ-48 Stepper Motor?

Post by mattyt » Tue Sep 19, 2017 11:04 am

I love the DIY flavour of your solution! Congrats on getting it working.

I can recommend the Pololu voltage reg's too; I've used them on a couple of projects and they're great - small, efficient, stable and relatively inexpensive.

IDWizard
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Re: Driving a 28BYJ-48 Stepper Motor?

Post by IDWizard » Wed Sep 20, 2017 1:33 pm

Thanks for the pointers. I'll let you know how it works out (in probably another couple of months!)

rhubarbdog
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Re: Driving a 28BYJ-48 Stepper Motor?

Post by rhubarbdog » Fri Nov 10, 2017 11:32 am

3v from 5v can easily be achieved with a voltage divider made up of a 3k resistor and a 2k resistor. Connect the 2 resistors in series between gnd and 5v. The voltage across the 3k resistor will be 3v and similarily 2v across the 2k resistor. Because the current drain of a microbit is a few milli amps and a voltage divider uses no power. This solution will only cost 10p

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