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1  Topics / Robotics / Re: Wheelchair Motor Controller. DX bus protocol on: October 15, 2011, 04:01:38 am
Blade Motors
I am not sure yet. I was thinking of using a Picaxe (I have plenty lying around) to controll the speed of a cordless drill motor. Then depending of the load sending a signal back to the arduino (or errror codes) so the Arduino could adjust the speed of the mower accordingly to what the rotor motors can handle. I think Im aiming for 3 30 cm diameter rotors (Perhaps 4) so the width of the cutting table should be around a meter.

For a perimeterwire i have not figured out what to do. I would like to make devide the lawn into segments that could cut in a different way. Perhaps i chould use a actuator to adjust the hight of the cutting table? In this way i could make a putting ground with really short grass and perhaps cut it on a daily basis. The rest could be ewery third day.

Any input on the blade/motor design would be highly appreciated.

2  Topics / Robotics / Wheelchair Motor Controller. DX bus protocol on: October 11, 2011, 12:35:48 pm
Hi Group
I just got an old wheelchair with some brutal motors. The electronics seems to work fine and my plan is to use it as a base for a Lawn Mower. With 1300+ Square meters of lawn and a broken Murray garden tractor I need a replacement made before spring.
The base is just about perfect for this usage.
The Motor Controller is controlled via a DX-bus whatever that might be.
I have not been able to get any specs on it yet. shows a diagram of the wheelchair.

Has anyone here tried to hack into this DX Bus?



3  Forum 2005-2010 (read only) / Interfacing / connecting 100 RGB Led´s on: January 23, 2011, 01:36:10 pm
Hi forum
I'm a retard when it comes to interfacing. I'm pretty much on top of things when it comes to coding.
I need to connect 100 RGB LED´s to my arduino.
The good thing is that they shall show same color. What will I need in order to do this? Some power transistor I guess.

I have not ordered the LED´s yet. So common anode/Cathode is not an issue yet.
I'm thinking of powering the whole thing from a 12V switch mode power supply since that is what I already have.

Any recommendations?
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