And includes such essentials as motor compensation so you get almost max torque at low input signals without requiring feedback from the motors etc, and will give controlled turns and speed independently.
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You just need to program it with the software that's available free if you ask.īurgerman Site Admin Posts: 58869 Joined:, 21:24 Location: United Kingdom It also has current limiting and 101 other things you can set up and will require. I am looking to interface an Arduino board into an electric wheelchair. I found a little information on this site but couldn't find any information on actually setting this up and getting it working. I'm not sure the brand of chair but it uses a Shark power module and control system. Is it possible to keep the existing wheelchair circuit boards and somehow use an Arduino to control the wheelchair? Or would it be easier to just scrap all the control boards and start from scratch, keeping just the motors and batteries of the chair? I know these chairs have a ton of safety features which makes it difficult to do projects like this.
Jack, I too went down this road and was not satisfied with getting into the physical joystick signaling so I built a logic analyzer from an FPGA board(Papilio - ) and figured out the protocol for the GC2 controller. What I like about this solution is it leverages the forward/reverse _and_ turning configuration built into the firmware on the GC2 controller. I just have to give it commands to move a percentage(0-100) forward, backwards, left and/or right or a combination. The controller firmware handles the _tank_ steering. I'm presenting to the local robotic club on this tomorrow night so there will be a fire under my butt to move on the blog.ĭoug DougL Posts: 69 Joined:, 22:47 Location: San Diego, CA USA I've not yet setup a blog on this but plan to do so soon. Hall effect, but whether it is an analog-output or digital-output joystick. I have both inductive (which yours is) and Hall effect analog sticks and they can be hacked in the same way. There are some controllers, however, (if I recall correctly the Dynamic Shark is one) that use a joystick with digital output (again, memory only here, SPI, but might be I2C). That is, the conversion from analog to a basic digital signal takes place inside the joystick. These two could be read with an Arduino, but you'd have to first figure out what SPI or I2C protocol is being used (clock rate and a few other things) and for that you'll need an oscilloscope or digital signal analyzer.
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