piggyback

... piggy-back 2 of them for more current handling capacity. http://forums.adafruit.com/search.php?st=0&sk=t&sd=d&keywords=piggyback

Thank you very much for the response. This forum is an excellent resource. Think I'll go with the piggyback route. Just curious, though: If I wire them in parallel ( Motor -> M1 -> M3), would it be as simple as motor1.run(FORWARD), motor3.run(FORWARD) using the AFMotor ...

It can be done, but the piggyback approach is less risky.

If you wire two motor channels in parallel, you have to make absolutely sure that you program them to operate in parallel at all times. When changing directions, it is best to RELEASE both channels before setting the new direction.

Hi there. I recently ordered extra L293D s to piggyback after one of them started smoking on my board driving this motor . I also bought heatsinks to go along with it. My question: is it even necessary for me to piggyback the L293Ds, or could I ...

thanks for all your replies. If I indeed decide to use another motor of higher current (ex. 0.8A for both 2 stepper motors), I would then need to piggyback 1 H-bridge on top of each L293D H-bridge right? (so total of 2 extra L293D being used)

... not. When you stop a motor, one or more coils will be energized for the duration, and 0.68A continuous is over the .6A rating. However, you can piggyback another pair of H-bridge chips on top of the first set to (nearly) double the output. On the external power source: Look at the lower left ...

... to one motor? I'd then have to have the Arduino controlling both outputs together at the same time. Is this possible? I understand I can also piggyback a second chip onto the driver chip. Is this better? Or could I even do both? Thanks, Mark M.

Has anyone tried adding another amplifier chip to the WAVE shield like in the Halloween sketch example? If you want a power boost, you can 'piggyback' another amplifier chip (TS922) on top of the existing one. This will approximately double the maximum volume http://www.ladyada.net/make/pumpkin/pumpkin.html ...

... and 36 V (720 mA using this motor http://uk.rs-online.com/web/search/searchBrowseAction.html?method=getProduct&R=3403711) so would I have to 'piggyback' two L293D chips? The power requirement of the DC motor is so far undetermined, though I believe it will be around 30 W. What provisions do ...

To piggyback chips, make sure both are oriented the same. Place one on top of the other so the pins of one straddle the other. Solder pin 1 to pin 1, pin 2 to pin 2 etc. With piggybacked SN754410's and a clip-on heatsink you ...

... Would the green LED on the shield even turn on if one of the chip was burnt? I ordered some spare L293Ds and heatsinks just in case. If I was to piggyback two L293D's onto an IC socket would a heatsink still be required? Would a single heatsink on the top IC be sufficient? Thanks for your help.

... :-/ The Hydra has everything but is too expensive, the PropTerm lacks the ethernet, the Spinstudio is modular but too gangly, the Ybox I'd have to piggyback VGA and PS/2 onto. The Propellor Demo board might work with a propnic attached, or I wire up an ethernet chip on the tiny breadboard on it. ...

... fine I think (by the way I hope that the power supply in itself is ok at the lower amperage - I think it's ok since its working). Could I use piggyback-ing to do this? Sorry if this has been covered, I couldn't seem to find it in a search. Any suggestions would be appreciated.

If you want to use both boards together, you should get "piggyback headers" (such as the wirewrap headers in the Adafruit shop). You need pins sticking out the bottom while having sockets on top, on one of the boards - presumably the motor shield ...

Thanks for the reply ladyada. Just so I'm clear on this, you can piggyback a SN754410 right onto the L293D? Also here is a pic of the motor (it's attached to the differential still because I didn't want to separate it.)

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