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robomakery / pvc-powerchair

Open-source, low-cost, pediatric powerchair
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Research and purchase motor driver #37

Closed dylanvaughn closed 7 years ago

dylanvaughn commented 7 years ago

example:

http://www.ebay.com/itm/60A-High-Power-MOS-Dual-Channel-H-bridge-DC-Motor-Driver-Module-/181947954406?hash=item2a5cf174e6:g:UDgAAOSwf-VWXXxI

Find similar products on roboshop and / or sparkfun

Send selection to mailing list, then purchase

dylanvaughn commented 7 years ago

Another option:

https://smile.amazon.com/Sabertooth-Dual-12A-Motor-Driver/dp/B00CT5CHIC/ref=sr_1_3?s=hi&ie=UTF8&qid=1491587619&sr=1-3&keywords=dual+channel+motor

dylanvaughn commented 7 years ago

Or this:

https://www.amazon.com/Sabertooth-Dual-25A-Motor-Driver/dp/B008OMQUXC

SBerneberg commented 7 years ago

I am re-thinking this whole motor driver thing. The motor drivers with more drive capability are very expensive. We could purchase a couple of the drivers with lesser current drive than one with more current drive. I would say get the one that we currently have, and get it working and take a chance that we will not have rotor lock that will last very long. Let's spend the resources on a better solution like the brushless approach. I would however put some heatsinks on the transistors so we have a better chance of surviving a rotor lock.

SBerneberg commented 7 years ago

Sorry, didn't mean to close this...still learning.

dylanvaughn commented 7 years ago

@SBerneberg I bought this one:

https://smile.amazon.com/Sabertooth-Dual-12A-Motor-Driver/dp/B00CT5CHIC

before I got your recent messages :smile:

Let's use the one I bought for v2 - things are going to change for v3 b/c of the BLDC motors anyway.