IPTUPED (I pick things up, put em' down): Robotic Arm
@ February 23, 2011
- Actuators / output devices: 4 servos
- CPU: Picaxe 28x1
- Power source: 4 AA
- Programming language: Basic
- Target environment: indoor
Simple Robotic arm still working on claw/gripper/hand.
Any suggestions on a control method would be aprrectiated. I was thinking remote control however would cost me about $50. Or...using and old PS2 controller however i dont know how to do that. ):
Check out video updates will be coming soon. Thanks
**Update**
Gripper added. Made out of legos. More info to come. Servos seem a little weak. (HS-311)
Would ading a second servo on the opposite side of the base work? Theoretically wouldnt it double the torque? Would it work?
I dont have time right now be back with more soon.
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Last Update for this project.
I am currently working on IPTUPED version 2.Just waiting on more parts, then it will be posted.
@ Mon, 2011-03-21 23:21
yea...
I am using two joysticks from an old PS2 controller and it works pretty well...i am close to completing version two and that will be posted soon.
@ Fri, 2011-03-11 23:03
Yea
I got it working with the x and y axis of one potetiometer. But it kind of works now i posted a forum for this specific topic if u want to look at that....
http://letsmakerobots.com/node/25747
@ Fri, 2011-03-11 05:35
Only one working...
@ Fri, 2011-03-11 09:42
Try all combinations of
Try all combinations of servos and potentiometers to see what is causing the problem.
Try also two potentiometers at a time, but from different joysticks.
Also be aware that "debug" command in the program prevents servos from correct function.
Write the code, then remove debug command an only then load it into picaxe.
@ Thu, 2011-03-10 00:49
I got it working...thanks so
I got it working...thanks so much. Right now i can only use one potentiometer. When i do the readadc it seems to work for each individual pot but when i try both at the same time it doesnt work. I will see whats up. Thanks
@ Tue, 2011-03-08 23:49
Problem
I am having a difficult time scratching away the copper. Could i just solder the wires on or do i NEED to remove the copper.
Also, would it just be easier to remove the whole joystick and then put it on a seperate board and just soler that in place?
@ Wed, 2011-03-09 22:36
If you have problems with
If you have problems with existing copper connections it will be better to remove joysticks completelly out from joypad.
Put it on separate board and connect the pins as I described formerly.
@ Tue, 2011-03-08 01:03
Thankyou
Thankyou, this really clears things up for me. I will let you know how it works.
@ Mon, 2011-03-07 22:49
So...
So basically this is what i would have to do.
1. Remove Joysticks from my old PS2 controller.
2. Solder a wire to each connection.
3. plug into...which wires go where??
@ Mon, 2011-03-07 23:23
You can leave joysticks
You can leave joysticks inside to keep it ergonomical.
I do not have pictures of my gamepad, but I found this one on web.
http://www.arcadeforum.com/forum/images/local/360.jpg
Each joystick has two potentiometers (blue pieces at two sides). Each potentiometer has 3 contacts.
Cut the printboard connections to joysticks (the copper lines on other side of board) by scratching them using sharp tool. Cut them close to the solder points.
For connection to picaxe use servo extending cables. Cut the end with pins away. Solder signal wire of it (yellow or white) to center pin of potentiometer. Plus (red) and minus (black or brown) wires of cable solder to other two pins of potentiometer. Doesnt matter which where.
Do this for all four potentiometers. Cut away existing USB cable of gamepad. New four cables can be connected to ADC pins of Picaxe and can be read by readadc command.