societypeople wrote: We've been able to wire the Arduino, max485 and dg419 chips in-line with the current joystick.
This uses the Serial Data bus aka the 'Shark Bus' to control the Power Module / wheelchair by emulating the entire joystick.
Its NOT a joystick hack.
Production wiring diagram for prototype v3.25
Earlier Fritzing pictures i have posted had the MAX485 outputs mixed up....other than that they should be fairly close.
Link to order the V3.23 boards --->>> http://dirtypcbs.com/store/designer/details/11063/5125/nano-shark-hat-v3-23-zip
It would be a good idea to put a Logic Analyzer on the outputs and see what is going on.
If you used my very early Arduino Code, it might be the bit math thats putting things out of wack.
Current version of my Arduino Code is here -
If you use it or part of it, please leave in the Attribution.
DougL, Woody, Lenny, Irving, Sir Mike and Jim all had a hand in this success.
And last but not least, Burgerman - for providing a place for this all to come together.
I should have a parcel on its way to the UK in a few days with a few of these boards and its possible a video then may turn up with better voice over than i have been able to provide.
My YouTube CH with videos of this build which may help you with your wiring issues...or make you more confused
Wii Remote Version , early build https://www.youtube.com/watch?v=6GkNFPJlW4c
RC build, https://www.youtube.com/watch?v=6x7QHqmzDK8
More Towing boats and build video https://www.youtube.com/watch?v=RP0mHbw7hyU
When some more minor bits get here in a few days, ill be doing a video of it complete with Hardwired Shark Bus Quick Connector.
...so long as the Lamotrigine i am trying out for my epilepsy does not leave me severely Aphasic again grrrr.