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Enough power/amps to drive DRV8833?
Moderators: adafruit_support_bill, adafruit

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Enough power/amps to drive DRV8833?

by soccer21x on Thu Apr 08, 2021 12:59 pm

Hello. I'm trying to run a TT Motor with the DRV8833 and am in need of some support. If there's not enough power/amps from the Circuit Playground Express's VOut pin please let me know.

Otherwise here is my wiring, with the SLP pin connected to my VOut.
Image


And here is my simplified code:

Code: Select all | TOGGLE FULL SIZE
import board
import digitalio
a_seven = digitalio.DigitalInOut(board.A7)
a_six = digitalio.DigitalInOut(board.A6)
a_seven.direction = digitalio.Direction.OUTPUT
a_six.direction = digitalio.Direction.OUTPUT
a_seven.value = False
a_six.value = True

soccer21x
 
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Re: Enough power/amps to drive DRV8833?

by adafruit_support_bill on Thu Apr 08, 2021 1:48 pm

Powered from USB, there should be plenty of power to drive a TT motor on the VOUT pin.
However, you will need to solder those headers on the DRV8833.

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Re: Enough power/amps to drive DRV8833?

by soccer21x on Thu Apr 08, 2021 1:51 pm

So it just won't work until they're soldered?

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Re: Enough power/amps to drive DRV8833?

by adafruit_support_bill on Thu Apr 08, 2021 2:04 pm

The header pins only fit loosely into the solder holes. That is not sufficient to make the reliable electrical contact needed for operation.

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Re: Enough power/amps to drive DRV8833?

by soccer21x on Thu Apr 08, 2021 2:09 pm

Thank you for your input! Time to practice soldering

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Re: Enough power/amps to drive DRV8833?

by adafruit_support_bill on Thu Apr 08, 2021 2:10 pm

We have a guide & video for that here: https://learn.adafruit.com/adafruit-gui ... -soldering

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Please be positive and constructive with your questions and comments.