How to control an H-bridge from Arduino

Pin 2: Output 1 -> voltmeter (eventually to DC motor)
Pin 10: Output 2 -> voltmeter (eventually to DC motor)
Pin 6: PWR Supply -> 8V power supply
Pin 7: Ground -> Ground from power supply
Pin 3: Direction Input -> Arduino digital output HIGH

Pin 4: Brake -> digital LOW
Pin 5: PWM Input -> Arduino analog output (value 255)

>
> I bought a LMD18200T H-Bridge but do not understand how to manage the
> connections from an Arduino. I am using an Arduino Wee which runs at
> 3.3V and offers digital output and PWM.
>
> What are the minimum required connections for this H-Bridge?
>
> http://www.acroname.com/robotics/parts/R27-18200.pdf
>
> The following seems straightforward:
>
> Pin 2: Output 1 -> voltmeter (eventually to DC motor)
> Pin 10: Output 2 -> voltmeter (eventually to DC motor)
> Pin 6: PWR Supply -> 8V power supply
> Pin 7: Ground -> Ground from power supply
> Pin 3: Direction Input -> Arduino digital output HIGH
>
> I also tried:
>
> Pin 4: Brake -> digital LOW
> Pin 5: PWM Input -> Arduino analog output (value 255)
>
> I didn't do anything with the "Bootstrap" pins.
>
> One part I don't understand is the PWM Input. Is that required? Is
> 3.3V sufficient?
>
> Any clarity you can lend to this would be appreciated. I was not able
> to find anyone documenting this H-Bridge wiring to an Arduino.

> The PWM pin is how you turn the chip on and off. Nuttin' works without
> it.
> PWM is a digital signal, so you just want to connect it to a PWM output
> of the Arduino, saving the analog outputs for something else. Looking
> (briefly) at the spec sheet for the 182000 you want a TTL-level (or
> better) signal for PWM. If the Arduino Bee only puts out 3.3V there you
> might opt for a level shifter. Most any CMOS gate chip running at Vcc
> will trigger HIGH on a 1V or higher, and will output Vcc.
> My advice is to Google around to find some circuits for a Basic Stamp,
> OOPic, or other controller that use this chip. That will provide a
> baseline for you.
> Finally, bear in mind that the LMD18200T is a DMOS device, meaning it
> requires Vs of at least 10 volts, and preferably 12, before it comes
> alive.
> -- Gordon
> Damien wrote:

> > I bought a LMD18200T H-Bridge but do not understand how to manage the
> > connections from an Arduino. I am using an Arduino Wee which runs at
> > 3.3V and offers digital output and PWM.
> > What are the minimum required connections for this H-Bridge?
> >http://www.acroname.com/robotics/parts/R27-18200.pdf
> > The following seems straightforward:
> > Pin 2: Output 1 -> voltmeter (eventually to DC motor)
> > Pin 10: Output 2 -> voltmeter  (eventually to DC motor)
> > Pin 6: PWR Supply -> 8V power supply
> > Pin 7: Ground -> Ground from power supply
> > Pin 3: Direction Input -> Arduino digital output HIGH
> > I also tried:
> > Pin 4: Brake -> digital LOW
> > Pin 5: PWM Input -> Arduino analog output (value 255)
> > I didn't do anything with the "Bootstrap" pins.
> > One part I don't understand is the PWM Input. Is that required? Is
> > 3.3V sufficient?
> > Any clarity you can lend to this would be appreciated. I was not able
> > to find anyone documenting this H-Bridge wiring to an Arduino.

> Thanks for the good advice. My main problem was that I was using less
> 12V.
>
> That's too much power for this motor, so it looks I chose the wrong H-
> Bridge. The L293D looks promising, and more popular:
> http://www.me.umn.edu/courses/me2011/robot/technotes/L293/l293.pdf

> Please note that the SN754410 is a direct functional replacement
> for the old trusty L293D. It has a higher current capacity to
> boot.