Can i power an arduino uno from a nema 23 stepping motor power supply?

Using Arduino Motors, Mechanics, Power and CNC
1

Hi Group

I have a Nema 23 stepping motor, motor driver and a power supply, and it will be controlled by an arduino uno.

the power supply is 240 volt in, and has a 36volt 4.3amp output for the stepping motor and driver. can I use this same output to run my Arduino uno a well?

I think the uno can take between 7volts and 12 volts , via the jack input so I assume I will need to reduce the voltage down from 36volts in some way which if ok to use this power supply I will look into the best way. unless anyone can point me in the right direction?

Also, is the 4.3amps going to cause any issues on the uno?

2

use 5V step down converter

1 Like
3

That's the wrong way to go.
Get a 36 to 5 volt step down converter feeding the UNO 5 volt pin.
4.3 Amp is a resource available when needed, not an attacking parameter.

1 Like
4

This stepdown regulator will work. Apply 5V to the Uno "5V" pin, not to Vin.

Components draw the current they need, so there are no worries about the maximum current capability of the power supply.

1 Like
5

That is correct and the safest way to power the Uno.
Buy a buck converter that can step down to 9V, or buy an adjustable buck and set it to 7.5V

1 Like
6

Use the buck regulator suggested by @ringtone and adjust the output to somewhere between 7-9 volts and feed it to Vin. The extra filtering will help you with the stepper noise and transients they may generate.

1 Like
7

Thankyou all for your help! :slight_smile: