Memorial day is 05/25/2015 – Orders will ship out on May 26th. There will not be any deliveries or shipping on Monday. Any order placed after 11am ET on Friday May 22nd will not start to ship out until Tuesday May 26th.

1,5 V motor with motorshield
Moderators: adafruit_support_bill, adafruit

1,5 V motor with motorshield

by lee young on Mon Mar 18, 2013 1:36 pm

hello adafruit team,

i want to control a motor which runs best on 1,5 volt (very quiet)
i have tested that the minimal power supply needed for the h-bridges is 3 volt.

if i go more down, the h-bridges are not working anymore.
i know that you guarantee only a minimum of 4.5 volt.

so my question is: is there a replacement ic, which has the same pin layout and works with a power suply of 1,5V

or should i use 4,5 volt + a resistor.

thanks in avance,
lee
lee young
 
Posts: 8
Joined: Tue Dec 18, 2012 8:11 am

Re: 1,5 V motor with motorshield

by adafruit_support_bill on Mon Mar 18, 2013 2:04 pm

so my question is: is there a replacement ic, which has the same pin layout and works with a power suply of 1,5V

or should i use 4,5 volt + a resistor.


There is always some voltage drop through the H-bridge. With the L293D, it is about 1.2v. I don't know of any replacements with a lower dropout. If the voltage is still too high, you can use a lower throttle setting via setSpeed(). The PWM will reduce the effective voltage being sent to the motor.

adafruit_support_bill
 
Posts: 37544
Joined: Sat Feb 07, 2009 10:11 am