EZ-B is a great board, DJ has done a fantastic job with the software! I'd highly recommend it to anyone that is starting a new robot. I did not look deeply...
47504
km6vv
Jan 26, 2013 6:08 am
Xandon, I can see how a sudden reversal of direction could cause problems. You had two spring-loaded tension arms? I just have one fixed tensioning idler...
47505
sgrdanderson
Jan 26, 2013 6:27 am
This is probably obvious, but be careful. I once got my eyes burned working with a strong UV lamp. Since a lot of the brightness is not in the human range,...
47506
Xandon Frogget
zuel.frog
Jan 26, 2013 7:02 am
Yes, spring loaded. It doesn't seem like it would happen if the tension was fixed. David is right something has to be flexing. -Xandon...
47507
km6vv
Jan 26, 2013 7:20 am
Nothing to flex that I can see. Box construction. I made it ratchet (jump) by slowly increasing a static load, I pinned the motor down, and turned the wheel....
47508
jamericanfreddy
Jan 26, 2013 2:32 pm
DAVE let me know when you can make the quadrature encoder code for EZ-B I NEED IT FOR A PROJECT TOO...
47509
David Buckley
robots42
Jan 26, 2013 2:41 pm
Alan I believe you are using XL belts, however these are quite old fashioned and not really suitable for high dynamic loads. There are later tooth forms such...
47510
dpa_io
Jan 26, 2013 4:36 pm
Alan, The timing belts on jBot are 1/4" for the main belts but we replaced the motor drive (short belts) with 3/8" belts because the 1/4 "weren't strong...
47511
Pete Miles
ajklz5
Jan 26, 2013 6:23 pm
Lots of great comments from people on this topic. I haven't seen this much activity off of a question in a long time here. I am glad to see we still have ...
47512
km6vv
Jan 26, 2013 7:42 pm
David, Yeah, I went with the XL pulleys I knew, and had a few of. The belts are 037 (3/8") Wide Single Sided Urethane with Polyester Cords. I didn't think to...
47513
km6vv
Jan 26, 2013 8:21 pm
David, So other then the fact that you're gearing-down, and I'm gearing-up, we should be pretty close. How many teeth on your small and large gears? I...
47514
km6vv
Jan 26, 2013 8:52 pm
Hi Pete, That's a thought. Although DPA's 'bot is running well, and my 'bot isn't that much different. I'd like to understand the differences before making...
47515
Peter Balch
peterbalch@...
Jan 26, 2013 11:54 pm
Off topic but... I'm trying to use some cheap strain gauges from China. They're a simple beam - a 5mm square steel rod 60mm long. You support the ends (there...
47516
dpa_io
Jan 27, 2013 12:13 am
Alan, yes motors are 24 volt Pittman GM9413J820 (or something like that) with 20:1 gear reduction and 500 CPR encoder. Drive pulley is 15 tooth and main...
47517
David Buckley
robots42
Jan 27, 2013 1:37 am
Alan With the 15 tooth pulley the belt needs to be really really tight. I have XL belts with 10t to 60t drive on Liberator and they have to be very tight not...
47518
km6vv
Jan 27, 2013 2:12 am
Hi David, 6:1 reduction is even more than I'm using (1.533). I believe my 15 tooth is too small, it's what's slipping. Maybe your torque is not as much. I...
47519
km6vv
Jan 27, 2013 2:12 am
David, Thanks. I'm still not finding the exact motor, http://electromate.com/db_support/downloads/PittmanExpress2011Catalog.pdf but I get the idea. 45 oz-in...
47520
SeattleRobotics@yahoo...
Jan 28, 2013 3:02 pm
Reminder from: SeattleRobotics Yahoo! Group http://groups.yahoo.com/group/SeattleRobotics/cal Monday Night Chat Monday January 28, 2013 7:00 pm - 9:00 pm ...
47521
SeattleRobotics@yahoo...
Jan 29, 2013 2:01 am
Reminder from: SeattleRobotics Yahoo! Group http://groups.yahoo.com/group/SeattleRobotics/cal Monday Night Chat Monday January 28, 2013 7:00 pm - 9:00 pm ...
47522
Thomas M
t_robotman
Jan 29, 2013 9:19 pm
Are the Monday night chats streamed live? Thomas Like robots? Visit: www.Robots-And-Androids.com...
47523
sgrdanderson
Jan 30, 2013 4:08 am
syfy.com/robotcombatleague Each week, Robot Combat League will feature tournament-style battles between eight-feet tall, state-of-the-art humanoid robots...
47524
Peter Balch
peterbalch@...
Jan 30, 2013 10:41 am
... If they could walk I'd be very impressed. But they can't of course. It's just a big version of Rockem Sockem Robots. ...
47527
dshinsel@...
dshinsel...
Feb 1, 2013 5:40 am
The robots move surprisingly fast. How do I know? My daughter and I are one of the teams :-) -- Dave Shinsel Facebook.com/ShinselRobots...
47528
hesperion22
Feb 1, 2013 6:28 am
"CONIFER —The robotics club at Conifer High School typically works on robots, but when club members had a chance to help a cat, they were up to the...
47529
David Buckley
robots42
Feb 1, 2013 6:36 am
Seeing as how they were built by Mark Setrakian I would be very surprised if they didn't work really well. For those of you who have never seen his work up...
47530
Pete Miles
ajklz5
Feb 1, 2013 6:42 am
sweet, I am so jealous of you Pete ... From: "dshinsel@..." <dave.shinsel@...> To: <SeattleRobotics@yahoogroups.com> Sent: Thursday, January 31,...
47531
David Buckley
robots42
Feb 1, 2013 1:04 pm
IIRC some time ago there was a dog which had a problem with its back legs which was also fitted with such a cart. ... From: hesperion22 To:...
47532
Max Cato
maxsthekat
Feb 1, 2013 6:40 pm
Hello all, Sorry for the spam earlier. It appears my account got hijacked. I have since changed the password and removed all secondary contact information....
47533
hesperion22
Feb 2, 2013 12:23 am
Dear Group, I am an admitted Newbie so please don't laugh. If any members could take an interest in advising me it would be greatly appreciated. I am trying to...
47534
km6vv
Feb 2, 2013 12:47 am
Should be easy enough to do. Use a 10K pot or so. Plenty of "demo" programs on the web illustrating how to interface pot (analog input) and a standard servo...
