Arduino Forum

Using Arduino => Motors, Mechanics, Power and CNC => Topic started by: ardontknow on Mar 12, 2016, 05:33 am

Title: Adafruit Motorshield external power maximum?
Post by: ardontknow on Mar 12, 2016, 05:33 am
Hey,

Does anyone know what the maximum voltage is that you can apply to the external power block of the Adafruit Motorshield?

I've got two 9v batteries wired in series for a combined 18.2v, will this work or fry my shield?
Title: Re: Adafruit Motorshield external power maximum?
Post by: JimboZA on Mar 12, 2016, 05:47 am
What does the adafruit product page say?
Title: Re: Adafruit Motorshield external power maximum?
Post by: ardontknow on Mar 12, 2016, 05:59 am
Use a NiHm battery pack. They didn't even specify voltage.
Title: Re: Adafruit Motorshield external power maximum?
Post by: JimboZA on Mar 12, 2016, 09:36 am
Says 13.5V for the h-bridges here (https://www.adafruit.com/products/1438)
Title: Re: Adafruit Motorshield external power maximum?
Post by: MarkT on Mar 12, 2016, 05:58 pm
9V batteries are never going to be able to produce enough current for motors in the first place.

Use an SLA or LiPo battery for good current handling.