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Batteries for DC motor

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krishnan.asish

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Iam using a PIC17F877A micro-controller to drive two DC motors via L293D h-bridge...

The motor specification is

https://www.nex-robotics.com/produc...rpm-centre-shaft-economy-series-dc-motor.html


I have also made a small vehicle by assembling the above components...

I tried the circuit by giving 9-v battery to the l293d as motor supply..

The vehicle moved quite well for a few minutes....then it stopped working...

Same thing is happening when I tried with a new battery....

This is the problem I am facing...

Please can anyone help me.....????


What I think is that there is no enough current to drive the motor...

If that is the case can anyone suggest some other battery???

Lead-acid is an option that is coming to my mind...
 

Sounds like the cct could be faulty. You could check the battery by directly connecting it to the motor, instead of through the L293D circuit.
 

i think because of power flutation at the time of moter rotated microcontroller will restartd.... you just connect an lcd display on it and you can easily identify it
 

how many motors are u using? If u r using more than one then i am sure that ur 9V battery is getting drained pretty soon !!
switch over to the lithium polymer batteries in Nex-Robotics
 

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