I am asking for info on how to convert a Jet 3 Ultra power Chair to a wireless robot.
I have all to RC material and a Jet 3 Ultra. I believe the controller is bad.
I will need to build or buy a controller for wireless operation.
Please advise
Merlin9800
Dear Sir.
Thank you for the help. My power chair is of 24 volt design. The motors use a 40 amp PG GC2 control modual ( which is completely shot).
I am good at gears but not IC etc. thus I need a GURU like you to point me. Hell I went to school with a slide rule. I build my owne and others computers. I must have picked up a little bit along the way. This is my first robot.
Please advise if the controller you suggested will work for me if not tell what will.
Paul
Coleman I will also need info on how to hook it all together should we come up with a controller. I am a lost sole in the robot world.
I cannot find specifications on the motors. just the info they are jet 3 Ultra motors and utilize a 40 amp PG GC2 controller. Surrly someone has made a robot from this power chair and solver all the issues.
Please advise
Thanks again
Paul
Thank you very much. I am quite excited to build the robot. At times I am quite sorry I retired. I loved the job of engineer and miss the outstanding people I was blessed to work with.
I am contacting the Jet 3 Ultra people for motor spec’e as I can’t find so much as a tag, plate or other idenfication for the motors in the hand book on the net or on the motors.
If I may, I would like to supply this info to you just to be sure I buy the correct controller.
I hope I am not a bother to you and I appreciate your help and guidence.
Paul
MR. Coleman
You seem to be right on. The Pride service shop gave me the following specifications:
24 volt motors at 40 amps
70 amp serg protection at 2 ms.
Motors operate at full 24 volts at a veriable width Square sine wave.
The controller you suggest is too much money would you recomend anything in a less expensive range.
Kindest regards
paul
Thank you : I wiil save up and get the one you know will work.
I have the shop marked
Tks
Paul
Hello,this is lynne,i am new here,hope to learn more from you …
I have a wheelchair and would like to use it as a base to a autonomous robot. I wonder if it would be better to hack the joystick or strip everthing away leaving the motors and frame and control it with Arduino or something similar. I have only used Arduino with small hobby motors. Looking for any suggestions.
can you tell me how I can tap into this with a little more detail please? I would like to connect this to my RX from my spektrum Radio.
Thanks
Hi Merlin9800,
Welcome to the RobotShop Forum. There are many ways to go about hackign a wheelchair, the easiest of which is to tap into the existing signals provided by the joystick (which would allow you to use the existing controller, batteries etc.). Depending on the signal type and voltage, you can see if a microcontroller can reproduce the analog/digital signals. Another method is to replace the existing motor controller with an RC motor controller with similar specifications. For example, if the wheelchair’s motors operate at 12V and consume 10A continuous, the 2x25A Dimension Engineering Sabertooth would work well and could be connected directly to an RC receiver. It is important to know the motor’s specifications in order to select the appropriate motor controller.
Hope this helps,
Knowing the motors operate at 24V DC and consume ~40A continuous (you will need to allow a bit of leeway for inclines), you have a few options for a high power DC motor controller. We suggest at minimum a 60A controller if your robot will only be on flat surfaces. You don’t need to worry about connections since each product comes with an illustrated manual showing you exactly how to connect all the devices and setup the controller for RC mode. A good choice for controller would be the 2x120A RoboteQ controller. Constrollers tend to be the most expensive part of a robot, and the RoboteQ line includes many safety features.
[LEFT]You likely will not use the digital input/output or optional position control, though the emergency stop and temperature sensor input would be useful.[/LEFT]
We offer a dual 60A controller, but based on the specifications you provided, it is not a good choice. Between the one suggested and this , we don’t offer any intermediates in that power range.
Hi kevins943,
Welcome to the RobotShop Forum. It depends entirely on your previous knowledge in robotics and electronics. If you have some experience, it might be more cost effective to try to keep as much as you can (for example, hack the signal coming form the joystick). If you are a beginner, we suggest either trying to understand the electronics before making a decision, or starting with smaller projects until you feel comfortable identifying all the parts and signals.
Hope this helps,
For tapping into a wheelchair control (or any other control for that matter) you will need to reverse engineer the control. This means that you will need to try to understand how the control works presently and how you can modify it in order to make it do what you want.
We cannot really give you a step by step guide since your situation is rather specific. The best way would be to research all the information you can find about that particular wheelchair and its control system. Also, you can measure the electrical signals coming from the controller in order to see how they react to your input.
We wish you all the best or your projects, It looks amazing.
