Simple Pulse Width Modulation (PWM) for motor speed control with 555 timer
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Uploader Comments (easterngeek)
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did u use a flyback?
And just use a BC546 or something like that.
It doesnt cost mutch and it wil be better for your 555.
especcially when you get a load on the motor.
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That's why I like engineering field
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@easterngeek K, didn't know motors could go that low on amps. I don't know much about them though. I've been doing basically what you suggested. I put a mosfet in the circuit. I'm not going for microbursts though... I'm going for like 1 to 5 second durations. The first mosfet was a buz71a... I quickly learned about max junction temperature, hehe... the buz71a overheated real fast. Think I'm going to try a irfz44 next... seems way overkill for something running of 2 AAs but hoping it works.
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Thanks for making your videos so simple.. please continue on :)
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this interesting circuit, but need more order
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cono ;pero eso lo sabe cualquiera .
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dng it I built it and it doesnt work! I am pretty sure all my connections are good and correct... I cant figure out what is wrong!
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try that with a stepper motor mate it will be awsome but vary the step with to get the good tunable souds and you can build midi robots using arduino and the same principles
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How do you keep the 555 chip from burning out? The motor draws several watts/amps from the batteries... yet the chip is only rated for mili amps, right? I know my 555 chips kept buring out when I tried something similar to this way back. It often pulsed for about a minute or two and then burned out. Was I doing something wrong?
101perspective 3 months ago
@101perspective keep max motor current 200mA. Bigger motor you'll need to use a transistor
easterngeek 3 months ago