problem in dc motor controller in the robot

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hossam abdo

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i made a robot
and the dc motor driver

the problem is , when i run only one motor , it operates correctly but when i run the two motors
the problem occurs and the two motors didn't operate.
i think the problem in the current.
is i right? and what is the solve?

thanks in advance
 

How are the drivers connected to power supply.
(Show picture and voltages)

KAK
 

power suply features? max power? max current?
What motor you used?
How control your logic to inputs? Second motor not working at al....or? ..... to few parametres to help you!
 

If you are using normal AA batteries go for higher current version batteris eg: LITHIUM or any other.
Else use an REGULATED POWER SUPPLY for test purpose. It might solve your doubt on CURRENT rating issues...

GOODLUCK
 

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