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Topic: Help with Arduino and Servo specifications. (Read 1 time) previous topic - next topic

tjrusk12


tjrusk12

About how large are the motor driver chips and how do I wire th chip to reverse motors?

groundfungus

For ease of bread boarding get DIP packages (16 pin).  Google "arduino 754410 dc motor circuit" (lots of hits).  Do you want speed control on all motors? Or just forward and reverse?  Which Arduino do you have?  It makes a difference on wiring.
If you want just fwd, rev, go and stop two arduino pins per motor.  If you want the fwd, rev, go, stop, and speed then probably three pin per motor.

tjrusk12

Ok I'll look it up. I've never heard of that so ill have to research it.
I'm getting the Arduino UNO. I only want the forward and reverse and off and on.

zoomkat


Ok I'll look it up. I've never heard of that so ill have to research it.
I'm getting the Arduino UNO. I only want the forward and reverse and off and on.


The title of your post says "Servo". You using motors or servos?
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

Henry_Best



Ok I'll look it up. I've never heard of that so ill have to research it.
I'm getting the Arduino UNO. I only want the forward and reverse and off and on.


The title of your post says "Servo". You using motors or servos?

From another thread he wrote, it appears that he's using 4 motors and two servos. An Adafruit motor shield can handle that.

tjrusk12

I'm using 4 dc motors and 4 servos. I think I'm going to stick with the H-Bridge. It's got good reviews and will probably work best for what I'm doing. If y'all have any other suggestions they would be helpful. :)

zoomkat

Note that non MOSFET h-bridges (not sure what type a 754410 is) can have up to ~2v drop across them, which may impact the motor performance when low voltages like 6v are being used.
Google forum search: Use Google Advanced Search and use Http://forum.arduino.cc/index in the "site or domain:" box.

tjrusk12

Ok. What's the difference between MOSFET and non MOSFET? So I should power the chip with a 9V so it puts out 7V going to the motors?  :)

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