Newbie - Incremental Increase in RPM on DC motor?

L

lprevs

New Member

• Feb 26, 2018

• #1

Hi everyone,
I was wondering how I could incrementally increase the voltage going to a DC motor without an arduino. The motor is 6 volts. Is this possible? And what exactly is a soft start motor?

Thanks,
lprevs

 

MaxHeadRoom78

Well-Known Member

Most Helpful Member

• Feb 26, 2018

• #2

Usually variable motor control is done now by way of a PWM control.
Soft start usually refers to power being applied with gradual increase from zero, rather than full voltage.
Max.

 

dknguyen

Well-Known Member

Most Helpful Member

• Feb 26, 2018

• #3

Well if the battery is 6V you can only ever run it slower than that. You could do it with a 555 timer wired to PWM driving a power MOSFET transistor which drives the motor in turn. Is there a reason you won't accept an arduino?

 

ClydeCrashKop

Well-Known Member

Most Helpful Member

• Feb 27, 2018

• #4

 

dr pepper

Well-Known Member

Most Helpful Member

• Feb 27, 2018

• #5

A 555 and a 4017 might do the trick, look up 4000 logic ic's.

 

MaxHeadRoom78

Well-Known Member

Most Helpful Member

• Feb 27, 2018

• #6

If you want a simple PWM controller there is http://www.discovercircuits.com/DJ-Circuits/simplepwm2.htm
Also for a couple of $$'s on ebay.
Max.