I am softly spoken you may need turn up your speakers. Arduino emulator to add sensors to the chair for stopping before hitting objects to assist the user. Inline module planned so that the factory unit / settings are not altered and this ‘stopping’ just enhances the abilities of the driver, and as you cant see behind a power chair…might stop me from running over my dog one day (she likes to sleep right at my back wheels…)
, https://i.ytimg.com/vi/YVvPwSwwGj8/hqdefault.jpg
source
2021-09-25
Thanks for the informative video, we would like to ask about the following points:
* We have an offset of approximately 1.2V in the inverted signal in the RS-485 bus coming from the Power Module.
do you have any clue why is this happening?
* When we tried to connect the MAX485 to get RS-232 protocal communication signal, we have noticed that the joystick shuts down and the fault code indicates a communication bus error (Flasing 9 times). We have put 22kohm resistance between A and B at the input of the MAX485 as you described in one of your videos, however, we are still getting the same issue. Note that we are using a DC-DC conveter called TSR-2415 to power the MAX485 from the chair battery.
* Also, in one of your videos, you talked about a switch called DG419, we did not exactly understand why were you using it, and we would like you to elaborate more on that point.
Finally, we appreciate any further information you provide.
Code and build thread http://www.wheelchairdriver.com/board/viewtopic.php?f=2&t=6503&start=270#p117801
Nice project, I have a couple of Shark power modules here but no joystick's One is a DK-PMB11 and would love to try and get an arduino communicating with it. Sadly there seems to be little in regards to information as to what communications protocol they use.
Hi, I like you're project, and I'de like control my Wheel Chair with an arduino too ^^… Where are you put the controls wires on the joystick ?