[TriEmbed] [OBSOLETE trianglearduino:1093] Favorite H-Bridge chip

[Rodney Radford]

I see a lot of them listed for sale, but I don't see the specs on them
anywhere other than the data item that the helicopter battery is a 3.7v
150mAh battery, so they are probably 3v max power.   I would recommend
waiting until they arrive and then test them to determine the current for
them under load so you have decent specs for the H-bridge.

But I do agree it should not take too much to control them.


On Thu, Jan 16, 2014 at 6:11 PM, Charles West <crwest at ncsu.edu> wrote:

> Hey Rodney,
>
> I'm hoping to use eight of these:
> cgi.ebay.com/ws/eBayISAPI.dll?ViewItem&item=111154620711
>
> I'm not quite sure of the specs yet, because I haven't gotten the data
> sheet yet.  However, the motors only weight 3 grams each (and I don't think
> we will be running them at full power), so I don't think the amperage will
> be that high.  Its for the Astropresence drone and we'll probably be trying
> to run it in a neutral buoyancy tank.
>
> Just one to start with, but we are hoping to present the project at the
> SpaceVision conference (and pitch the idea again to a few people).  If
> there is interest in the project, we'll probably be iterating the design
> several times.
>
> Thanks,
> Charlie
>
>
> On Thu, Jan 16, 2014 at 5:27 PM, Rodney Radford <ncgadgetry at gmail.com>wrote:
>
>> What are the specs of the motors you plan to drive - voltage and current
>> - as that will partially limit the choices.
>>
>> Also do you have any preferences on form factor for the IC - through
>> hole, SMT, etc?
>>
>> And how many do you plan to build - just one, or are you planning to make
>> several?
>>
>>
>> On Thu, Jan 16, 2014 at 5:25 PM, Charles West <crwest at ncsu.edu> wrote:
>>
>>> Hello,
>>>
>>> I'm working on a project where I need to get bi-directional control on 8
>>> small dc motors.  In the past I've just made H-bridges from discrete
>>> Darlington transistors, but I think that that would be too bulky for this
>>> project.  However, I'm not quite sure what chips would be best to use.
>>>
>>> These (and similar) chips seem popular:
>>> https://www.sparkfun.com/products/315
>>>
>>> If I may ask, is that what you use or is there some other chip that you
>>> prefer?
>>>
>>> Thanks,
>>> Charlie West
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