Let's Make Robots!

high current

PWM on High Current(amp) Actuators

I'm trying to move up into the category I originally got into robotics for in the first place: bigger buddies!

I have a Raspberry Pi I'd like to use to control some linear actuators, which are 12v and lift about 225lbs. I'm unaware of their amp usage: a search for similar rated ones said ~4-5A. They were purchased from an online auto parts place, so it's unlikely they'd know.

Driving a ride on toy car motor

Hi folks,

As part of a project I'm building I need to create a rotating platform and I recently salvaged a DC motor and its gear train from a ride on toy car, so I thought if it can scoot a child around it should have enough torque for this application. The problem is that I'm not sure how to drive it.

30 Amp Dual motor Driver, Krumtroller Order requests

The Krumtroller has been generating alot of interests lately, and Ive been working on a 2nd revision of the board. It's cheaper than the other boards, because I'm not looking for profit first, I'm far more interested in helping out LMR'ers and further their projects. Therefore, I am offering the Dual Motor Driver, featuring Current sensing, PWM control and bidirectional motor control for Just 50 dollars. This board can handle 30 amps and Fits under 70mm square, and has standardized mounting holes so you can mount any LGA775 compatable cooler for the board.