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dreamster / dreamster-board

Specialized Arduino board which is the heart of the Dreamster Robot.
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Do we want to use the L9110 h bridge? #5

Closed tulku closed 9 years ago

tulku commented 9 years ago

The H-bridge present in the most common "arduino driver for motors" is the L9110. That IC is no were to be found, execpt in Alibaba, where it is incredible cheap:

http://www.alibaba.com/product-detail/L9110-L9110S_60135131276.html

@yagui, @sebascerone Will we be able to source the components? Shall we use a more trusty part? Switch to a TI h bridge?

sebascerone commented 9 years ago

@yagui https://github.com/yagui, @sebascerone https://github.com/sebascerone Will we be able to source the components? Shall we use a more trusty part? Switch to a TI h bridge?

We should use LMD18200 from TI. It is the same I used for TCO.

Regards, Sebastian

yagui commented 9 years ago

DRV8833C looks about similar to L9110 and is one of the least expensive in ti webpage http://www.ti.com/product/DRV8833C $2.24 or $0.8 | 1ku

LMD18200 has more output current, it says 12V operation, and is more expensive $17.01 or $8.10 | 1ku www.ti.com/product/LMD18200 If we want more current rate there other options in ti web http://www.ti.com/product/drv8848 is a good option or http://www.ti.com/product/drv8841 another one

sebascerone commented 9 years ago

Forget LMD 18200, it is a lot of money!!!

2015-02-07 10:33 GMT-03:00 Ariel Burman notifications@github.com:

DRV8833C looks about similar to L9110 and is one of the least expensive in ti webpage http://www.ti.com/product/DRV8833C $2.24 or $0.8 | 1ku

LMD18200 has more output current, it says 12V operation, and is more expensive $17.01 or $8.10 | 1ku www.ti.com/product/LMD18200 If we want more current rate there other options in ti web http://www.ti.com/product/drv8848 is a good option or http://www.ti.com/product/drv8841 another one

— Reply to this email directly or view it on GitHub https://github.com/dreamster/dreamster-board/issues/5#issuecomment-73364418 .

tulku commented 9 years ago

@sebascerone what do you thing, DRV8833C or L9110? The TI one seems cheap enough and I would think that it's more reliable.

sebascerone commented 9 years ago

I always prefer texas than a chinese IC.

2015-02-07 14:52 GMT-03:00 tulku notifications@github.com:

Assigned #5 https://github.com/dreamster/dreamster-board/issues/5 to @sebascerone https://github.com/sebascerone.

— Reply to this email directly or view it on GitHub https://github.com/dreamster/dreamster-board/issues/5#event-231975628.

tulku commented 9 years ago

Ok, then we switch to the DRV8833C.