Could someone point me to the rules for mini sumo robots? Size? Weight? I'll probably never get to Seattle to actually compete, but I would like to build a...
1478
Dickens, Thomas P
Thomas.Dickens@...
Aug 30, 2000 5:17 pm
see http://www.sinerobotics.com/sumo/mini-sumo.html summary: 500 grams max weight, size 10cm x 10 cm x any height. - - - - - - - - - - - - - - - - - - - - - -...
1479
Doug.Kelley@...
Aug 30, 2000 5:17 pm
http://www.sinerobotics.com/sumo...
1480
T Nichols
tnichols@...
Aug 30, 2000 6:38 pm
Circuit Cellar has a neat article on a $55 WebCam: http://www.chipcenter.com/circuitcellar/august00/c0800bl1.htm t...
1481
jimc@...
Aug 30, 2000 7:50 pm
I'm not sure if anyone else has posted this, but a few of you may be interested in the site below: ...
1482
smallbeck@...
Aug 30, 2000 10:24 pm
Thanks for all of the input via e-mail. I have ordered the RF tx/rx pair from http://www.rentron.com I will let everyone know how well it works for my...
1483
J.Michael Williamson
mikewill@...
Aug 30, 2000 11:08 pm
Hi Adam I think I'm in the same boat as you, as I live in Whitehorse, Yukon. Bill Harrison is one of the best Mini Sumo builders in the world. However, as a...
1484
Dan Chiodo
dchiodo@...
Aug 31, 2000 12:42 am
Hello to all: Drop everything and go to your nearest RaidoShack and get your FREE ":Cue:C.A.T.", this thing is a hand held barcode scanner that plugs between...
1485
Reconbot@...
Aug 31, 2000 4:07 am
The LEGO Rotation Sensor has a resalution of 16 counts per turn. Which couppled with a gear could be a nice substatute for an encoder, but how would it work?...
1486
Reconbot@...
Aug 31, 2000 4:30 am
Well, I did some research. (found an old link) 8v is applied to it for 3 MS then 5v through a 10k resistor for 0.1 MS while the sensor is read. The sensor will...
1487
Mark Medonis
mark@...
Aug 31, 2000 5:10 am
Um, actually PWM both before and after the H bridge IS AC. Well, AC with a DC component anyhoo. But you are correct, the control of this circuit will be...
1488
Mark Medonis
mark@...
Aug 31, 2000 5:13 am
I would also add Globe Motors, can't remember the web address. Similar to Pittman in catalog selection, but a bit higher quality. Good service too. Mark...
1489
Corey Hannum
corey2k2@...
Aug 31, 2000 2:09 pm
Hi, I am using an HC11 microcontroller and a motor controller from wirz.com can i use pwm without extra hardware? Thanks, Corey...
1490
smallbeck@...
Aug 31, 2000 3:49 pm
My brother-in-law (Tony) and I (Scott) are getting a few projects together for the robothon next year. We have entries for the line maze and IEEE micro mouse...
1491
Dickens, Thomas P
Thomas.Dickens@...
Aug 31, 2000 4:18 pm
Yes, it's easy! You can also do it without interrupts if you can work with a (about) 32mS cycle. I have this written up in two articles: PWM with interrupts: ...
1492
M.Jones Hubert
mjhubert@...
Aug 31, 2000 4:34 pm
I got Fire-Stick from rentron.com, they worked perfect! Yall know the standart disclamer... Cheers, Matt ... ...
1493
Doug.Kelley@...
Aug 31, 2000 5:06 pm
Scott, Soccer will likely be dropped from Robothon 2001 because we haven't decided exactly how the competition will work. We will continue developing the...
1494
jimc@...
Aug 31, 2000 6:00 pm
I'm looking for recommendations for a good multipurpose battery charger and what type of batteries are best. If anyone knows of some good sites on rechargable...
1495
Bryan Minugh
bminugh@...
Aug 31, 2000 7:03 pm
AA size? C? D? What do you want to run? ... From: jimc@... [mailto:jimc@...] I'm looking for recommendations for a good multipurpose battery charger...
1496
jimc@...
Aug 31, 2000 7:26 pm
Currently AA, but that may change. Are there not chargers that can handle different battery sizes? If so, are they any good. ... AA size? C? D? What do you...
1497
jimc@...
Aug 31, 2000 8:03 pm
There is an interesting article in today's Seattle PI on a robot that can build simple robots. There may be more info. on this in the current issue of Nature...
1498
Richard Soennichsen
richas@...
Aug 31, 2000 8:49 pm
I am running a couple of gear motors with simple encoders(single pulse train) I am trying to come up with some simple feedback algorithms to provide constant...
1499
Bryan Minugh
bminugh@...
Aug 31, 2000 8:54 pm
I asked because RC hobby packs and Lead-Acid batteries use a charger that doesn't work with other battery types. Garage sales and thrift stores often have...
1500
Mike Jones
michaelj@...
Aug 31, 2000 9:07 pm
try setting up a system timer to occur every .001 sec (adjust to your needs). At every interrupt look at the encoder count and compare with your desired ...
1501
Dan Creagan
dcreagan@...
Aug 31, 2000 9:09 pm
The way you are doing it will work. Visit http://academic1.bellevue.edu/robots/mogotut/simplemotor.htm for a couple of ways to program it using basic (BasicX...
1502
Richard Soennichsen
richas@...
Aug 31, 2000 9:17 pm
With regard to my previous message: I am going to try to measure the pulse width with e PCA capture feature and adjust my PWM duty cycle accordingly. Richard...
1503
Kevin Impson
egroupbox@...
Aug 31, 2000 11:35 pm
Hello, This is my first posting to the group.... The Radio Shack barcode scanner that you can get for free right now is great.... The truely cool thing about...
1504
Karl Lunt
karllunt@...
Sep 1, 2000 12:41 am
I just got some solar panels from Electronic Goldmine. (I know, this is the start of Seattle's 50-week rainy season; call me an optimist.) The 12" x 12" panel...
1505
Alex Brown
rbirac@...
Sep 1, 2000 12:50 am
Hi Guys, I noticed recent letters on RF remote control setups; and having looked at the recommended Rentron's stuff, it looks well suited (and well priced) for...
1506
Alex Brown
rbirac@...
Sep 1, 2000 1:06 am
Richard, I have implemented such a setup with a drive motor and encoder. In order to get rapid response, I timed the interval between encoder pulses rather...
