Hi all,
do you think that with a l293d i can control two of this motor : http://www.pololu.com/catalog/product/1093 with a 2 cell lipo as power supply?
If it never stalls
Each motor pulls 1.6A when stalled out. The L293D pumps out <1A per channel. You should look into the uglier, harder to work with L298N (link is out of stock but it’s for information purposes only in this case).
the l298n is very big and i
the l298n is very big and i have to put a lot of diode.
What about this: http://www.pololu.com/catalog/product/24 ?
The info is there on the page but…
"…output current capability of 1 A per driver. For even higher current applications, it is possible to physically stack two devices on top of each other to get almost 2 A of drive current."
you can get this $9 driver
you can get this $9 driver from pololu, but the best bang for your buck is an L298N (also available from sparkfun), which is breadboard friendly if you slightly offset the pins. I recommend buying a bunch of 1N5819 Schottky diodes anyways as they come in handy (I also use them for unidirectional voltage level converting)
+1 for the N
Yes, the diodes are tedious but the driver is solid. I understand the size concern and would like to point out the L293HN which I had to use to get a motor driver under the hood of LMRbot. It’s the same as the L293N but lays down flat. Takes up a lot of real estate but it’s no taller than any other IC.
L293HN L298HN, and there is
L293HN L298HN, and there is also the L298P PowerS020 package, but I only have experience with the vertical package.
LOL
That’s why google couldn’t give me a link to a datasheet… 293 ha! Thanks for the correction m8
add an encoder
Does anyone know a way for mount two encoder on this motor?i was thinking of buying the one with the extended motor shaft and mount a disk there.
You are in luck (I think)
Here is a set to add quadrature encoders, which does it at the wheel so you must use the wheels in the set as far as I know. The resolution is 48 counts per revolution.
If you simply have to have a
If you simply have to have a 293 motor controller but need more load capability, then do the old trick of soldering 2 of them together.
Literally solder a second one on the back of the first, which doubles the load specs.
This has been done for years and is listed in the “Robot Builders Bonanza” book.
Thanks rogue, but the wheel
Thanks rogue, but the wheel are too big.i’m trying to build a micromouse so i choose the 32 mm wheel : http://www.pololu.com/catalog/product/1088 .
** The wheels are not very big, just wide I think**
Well I remember seeing a backside quadrature encoder at lynxmotion.com but I doubt it will fit those micrometal gearmotors well or at all.