looking for a robotic arm - Page 1
Forum section: electronics / general

author: legacy
author_rank: Super Contributor
timestamp: July 07, 2014, 12:54:26 pm
content: hi guysi'd like to toy with a toy likethis.do you know any interesting kit around ?also, i'd like to study inverse cinematic, any book/code to suggest ?

author: daedalus
author_rank: Regular Contributor
timestamp: July 08, 2014, 10:45:53 am
content: That robot arm is indeed a toy, they are ok for playing around with, but not good for much else. as its only a toy, there are cheaper options, the robot listed here is used a lot by the students at the uni I work with for teaching basics. You can get kits to drive em from usb, or just roll your own.http://www.imagesco.com/robotics/owi-535.htmlHere are some kinematics tutorials for a serial robot arm, its based around Microsoft robotics studio simulator, but the math is all there.http://www.kuka-robotics.com/en/products/software/educational_framework/arm_tutorials/

author: TopLoser
author_rank: Unknown
timestamp: July 08, 2014, 10:57:45 am
content: Taking up a large space in my office is something I'd really really like to get rid of...Fanuc ArcMate 120 with RJ2 controller and teaching pendant. 16Kg payload and 1.5m reach.http://www.robots.com/fanuc/arcmate-120iBloody thing is about 350Kg and another 150Kg for the controller. Not been used for about 12 years, almost new and was bought for a project that got cancelled.Anybody with £2000 want to come and shift the damn thing?

author: lgbeno
author_rank: Frequent Contributor
timestamp: July 08, 2014, 11:00:47 am
content: I really wish I had £2000 to spare on that

author: legacy
author_rank: Super Contributor
timestamp: July 10, 2014, 07:08:02 pm
content: @TopLoseri wish i had 2000 UK pounds, too, but i got a budget of 300 euro for such a projectthank you guys for tutorials, they look well done

author: sfiber
author_rank: Regular Contributor
timestamp: July 10, 2014, 07:56:45 pm
content: I think you should look at the second handed puma robots.

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 10, 2014, 08:15:56 pm
content: Quote from: legacy on July 10, 2014, 07:08:02 pmbuild it with rapid replicatorwith some (smaller) servos or steppers should be within your budget.

author: legacy
author_rank: Super Contributor
timestamp: July 14, 2014, 07:46:51 pm
content: About the Lynxmotion AL5xx series, a complete kit is composed byCode:Servo(1) Hitec HS-422 10,27 euroServo Hitec HS-485HB 12,81 euroServo Hitec HS-645MG 26,62 euroServo Hitec HS-755HB 26,74 euroMaxi Servo Hitec HS-805BB+ 27,35 euroAL5D-NS - mechanics parts only 159,70 euro(1) HS-425BB or HS-322HD may be substitutedTotal is under 300 euro (shipped), it sounds good

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 15, 2014, 10:55:05 am
content: Quote from: legacy on July 14, 2014, 07:46:51 pmuntil you play with it.

author: rolycat
author_rank: Super Contributor
timestamp: July 15, 2014, 11:05:55 am
content: It doesn't look bad as a learning tool - there are some YouTube videos of it in action.It's a bit slow and wobbly, and the repeatability isn't likely to be great, but what do you expect for 300 euros? The AL5D should be able to lift a few hundred grams, which is better than a lot of similar 'toy' arms.

author: Rigby
author_rank: Super Contributor
timestamp: July 15, 2014, 12:27:59 pm
content: Quote from: Mechatrommer on July 15, 2014, 10:55:05 amI have three of these, used for work, and they all do exactly what I need them to do, repeatedly.not sure why you're so sour on them.

author: legacy
author_rank: Super Contributor
timestamp: July 15, 2014, 12:39:24 pm
content: Quote from: Rigby on July 15, 2014, 12:27:59 pmi am curious, could i ask you what do you use them for ?also, what about your controller board ?

author: Rigby
author_rank: Super Contributor
timestamp: July 15, 2014, 01:03:43 pm
content: They all have aBotBoarduino.I use them as toys for various things. I have a Leap Motion controller that I've written software that lets me control the arm without touching anything. kids pick it up very quickly.I also have a beta Thalmic Myo armband which is also a gesture controller, and I use that for one of the arms, also. the other is controlled with an XBox360 controller.They're all in tubs of sand or pebbles or gravel and kids can dig around with them.

author: Mechatrommer
author_rank: Super Contributor
timestamp: July 15, 2014, 01:23:24 pm
content: Quote from: Rigby on July 15, 2014, 12:27:59 pmbecause i have several of those type of cheapo servos, intended to use them for "chicken leg" or biped autonomous robot until i saw examples in the net how they woobles. you are right, as you've and other mentioned, for "toy" application it does wonder esp to kids.

author: Rigby
author_rank: Super Contributor
timestamp: July 15, 2014, 02:28:18 pm
content: Quote from: Mechatrommer on July 15, 2014, 01:23:24 pmYeah they're not strong or accurate, but they don't cost a lot of money, either. They're DC hobby servos. I burnt out several before I limited the range of motion in software. My code had the arm trying (very hard) to move to a position that was physically impossible to move to, due to the arm linkages.They move smoothly and they can move quickly, and fortunately in my use cases, the input mechanisms are far less accurate than the servos themselves, so to the user, the motors are beyond good enough.

author: alanb
author_rank: Frequent Contributor
timestamp: July 15, 2014, 03:08:15 pm
content: Quote from: TopLoser on July 08, 2014, 10:57:45 amI'd love to see your office! it must be an Aladdin's cave of interesting gear.

author: TopLoser
author_rank: Unknown
timestamp: July 15, 2014, 07:01:41 pm
content: Quote from: alanb on July 15, 2014, 03:08:15 pmYou're in the UK, come visit! Oh and bring lots of cash! You can even help open boxes of totally unknown 'stuff'...

author: Monkeh
author_rank: Super Contributor
timestamp: July 15, 2014, 07:26:06 pm
content: Quote from: TopLoser on July 15, 2014, 07:01:41 pmOne of these days I'll have to take you up on that. And bring a large van.