Hi, i'm in a project in my college, i need to figure out how the joystick of the wheelchair works, i'm seen some topics in the site,one call my attention, https://forum.arduino.cc/t/interfacing-arduino-with-jazzy-power-chair-pcb/87026?page=4, but its a little old, and some videos that the guy posted not working anymore, so i'm opening a similar topic to discuss and try to help me with my problem.
Thats is the joystick using in the wheelchair, and i want to control the motors without the person control the joystick
https://www.cw-industrialgroup.com/Products/Mobility-Vehicle-Solutions/VR2/Drive-Only-System
In the old topic that a mention before, have some codes, but the videos are off ,so i dont know properly the connection that i need to do, so to know that connections or a better code will help a lot.
If i need to post more information tell me, but the wheelchair ir the b400, module of joystick eh a vr2 and the joystick is a d51422(i think the models dont chance a lot the connections and wires)
Hi. does the joystick work on an on off technique?
what an on off technique is?
I would like to know the circuitry of the joystick
i can send a photo of the circuit, but doesnt have nothing about this joysticks in datasheets
What exactly seems to be the issue?
Do you mean that you want to remove the joystick and control the wheelchair motors by Arduino?
yes, another codes will guide the wheelchair to not hit wall..., but also i have to control manually the joystick in case that the wheelchair will hit something and the sensor dont identificate
i dont know how to interfacing in arduino , i need that the arduino control the motors while the user not use the joystick
the manual doesnt tell nothing about joystick wire connections and motors, we are having a issue in discover signals, because the datasheets are poor em informations about the communications.
a plan b is cut the wires and connect direct to arduino, where we code something, thats the problem, we dont know where to start, so i need help to begin anything that makes sense
Plan C is to get an oscilloscope and learn how to use it and then examine the signals generated by the joystick. Only at the point can you begin to design what your Arduino might do.
Do you have an oscilloscope handy? If so, what do the eight signals between the joystick and the circuit board look like?
Plan A is using the oscilloscope, but the signals that show in it, are not useful, we dont know what kind os signals they are, even the teachers are trying to figure out what kind of signals the joystick are generating
but the signal looks like a squarewaves, with a high value at 5V, but are not constants and vary a lot difficulting the tests
We running in circles, we already test, can bus, one wire connection, and other types of automotive signals.
If you don't know what you are dealing with, how can you ever use an Arduino to connect and recreate those signals?
if i discover what type of signals they are, i cannot proceed because i dont know the connections to do in arduino. We are trying to know the signals and at the same time the connections of the joystick
If you want help interpreting the signals you will have to provide a LOT more detail than that.
Do your teachers have access to an 8-channel logic analyzer? Seeing the 8 signals relative to each other may be more helpful than looking at them separately.
That can wait until Step 2.
