Another newbie question...

glean

New Member
I am just starting with this pic-18 project board and as of now only have 1 power sorce for it(3 AA). When I connect two dc motors to it either one will run fine when powered alone, but when running at the same time there is a power drop in the 2nd motor. Is this due to just not enuff power (ie i need my second power pack hooked up) or do I need to put a board together to fix this?

Thank you for the help.
 

BeanieBots

Moderator
Assuming no wiring errors, I would assume the battery voltage is dropping.
That is, your battery pack is not 'strong' enough.
Simple test, if you connect one motor to just the battery, does it slow down when you connect the other motor. If yes, then the battery is not strong enough. If no, then probably a wiring fault.
The reason for two packs with the 18 board, is one for the PICAXE and one for the motor drive. Driving the PICAXE from a seperate pack will not solve the 'slowing motor' problem but it will prevent the PICAXE from having problems due to 'dropped voltage' caused by the motors.
 
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