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Old 04-10-2026 | 10:56 AM
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trilerian
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Originally Posted by Roelof
Old skool electronics. On a Dutch tech forum most people only know programable electronis, people would even use an Arduino to make a LED blink. I would use a CD4017 with some diodes to make the sequence.

In the past I had the idea to make such a setup but then with an analog or PWM control to look up the sensor switching point as a timing measurement.
I think using a CD4017 would greatly simplify my circuit, lol. But I don't actually have any laying around, I do however have plenty of other logic ICs. Maybe I will put a couple in my cart the next time I put in a component order.

I had half a mind to build out the timer function using using rc filters and comparators, but decided against that and just went with the 555. But with the CD4017, I think you can get rid of the 163, 138, and the 04. Hmm... I do like the idea, the question is whether or not I want to expend anymore energy on this build, especially since the next step it to put it on a microcontroller as the end goal is to build a motor controller.

Anyway, here is a revised schematic. I didn't add the 5V rail and missed a ground somewhere. Also put the load on the wrong output. That is what you get when you build the schematic off your circuit, lol.

EDIT: This is not a motor controller, this is simply a circuit built using digital ICs, mosfets, and LEDs to represent 6 step commutation.


Last edited by trilerian; 04-10-2026 at 11:24 AM.
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