Author Topic: Wiring up 2 DC Motors with an H-Bridge  (Read 492 times)

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Offline mech223studentTopic starter

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Wiring up 2 DC Motors with an H-Bridge
« on: January 12, 2014, 05:35:10 PM »
Hello Everyone,

My project is going to use a AT90USB1287 Microcontroller OR an Arduino UNO. My goal is to have the motors controlled directly from the microcontroller (no mechanical switches), as eventually the motors must respond to sensor feedback.

I'm basically hoping to combine something like this: http://www.instructables.com/id/Duel-Motor-Driver-with-Arduino-using-a-SN754410NE-/ with something like this: http://www.thebox.myzen.co.uk/Workshop/Motors_1.html (the first or second diagram). So, microcontroller sends output signal (forward or reverse) through resistor, opens transistor which connects battery source to motors/h-bridge control (not so sure about the order there), activates motor(s) in forward or reverse accordingly.

Here are the specs: 
Motor: Mabuchi FC280-SA 2470 DC, 4.5V, 3A stall current
Source: 4.5-9V
H-Bridge: SN754410NE Texas Instruments
Transistor: NPN 2N222 (not sure if this model will work, saw it on a website somewhere with similar purpose)

Basically, is this possible? What else would I need to get this working? Thanks in advance!   ;)

-Leora

Offline waltr

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Re: Wiring up 2 DC Motors with an H-Bridge
« Reply #1 on: January 13, 2014, 08:08:42 AM »
Why use the NPN?? The SN754410NE has an Enable pin that can be used to turn off the H-Bridge.

The SN754410NE also is NOT a good choice since it can only handle 1Amp max and your motors can draw 3A.

 


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