However, even though I'm not a powerchair user, I have recently found myself nursemaid and unpaid tech to two cheap used Pride Jazzies, which in my ignorance of all things powerchair I pointed first my sister, then my niece at, based on lightly used condition, robustness of construction, and price, had I found this site before I may have had different suggestions . We all make errors based off incomplete information, but at least the girls seem relatively happy with them, aside from getting them to go where you point them, they don't seem much worse than any other technology designed on cave walls with charred sticks & built with flint axes. I'm 50 and by forgotten now through disuse training an electrical engineer there were more advanced electrical conveyances being built by students at the college way back then than these things seem to be. Still they sort-of do the job, within their limitations.
I must say, I'm impressed with the quality of information I've found both on this board, and on BM's main site, he clearly understands what makes these things tick, and Ohm's law, more than can be said for Pride Mobility, judging by the weedy battery and motor cabling used!
I'll be asking what my chances are of turning point & hope controls into something steerable on the appropriate board given my purchasing advice error, even if it turns out to involve scouring evilbay for a complete other brand chair control system and retrofitting it, I'm frankly sick of repairing walls and doorframes, but having aimed the things myself, I truly can't hold the girls responsible!
Since I glean this is down to braindead programming, I'm frankly amazed there haven't been personal injury and property damage lawsuits, but the typical user won't realise it's down to this and will just chalk it up to poor concentration I suppose.