 | | RE: V2X Compass
|
|
I didn't actually buy the clock, the company that I work for was scrapping a load of stuff from one of it's buildings and these clocks were some of it. The company said if we gave 2 pounds to charity we could have a clock. They have been very (...) (27 years ago, 27-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Help for problems with Polaroid 6500 sonar board
|
|
Hi all if anyone has problems using the 6500 series for distances below 35cm by using the binh signal I have a possible solution to the problem. We also expierienced problems using the sensors for distances between 15cm and 40cm. We finally found (...) (27 years ago, 27-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar questions (technical ones!)
|
|
(...) Yes! I have been working from your sonar page, but as a sanity check I checked the Polaroid sheet again. Whoops! At least we were both tripped up by it. I'm used to seeing the "speed of sound" (ft/ms) quoted, not the "slowness of sound" (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar questions (technical ones!)
|
|
Good questions!! (...) The polaroid number/widely quoted number is 0.9 MILLISECONDS PER FOOT -- or 1.11 ft/ms. hence the conversion matches! I think also I have this wrong on my HB sonar page! This confused me for a while too. (...) Yes, this is (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar for cheap
|
|
... still a good book though- I recommend it highly :) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar for cheap
|
|
(...) parts should be under $10.00. Has anyone tried this circuit? Yeah, it doesn't work :) That's why I designed my circuit in the first place. I tore my hair out for a couple of weeks trying to figure out what I was doing wrong. I finally realized (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | thanks
|
|
Thansk for the quick reply, everyone! phil (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar for cheap
|
|
That was probably my web page, the URL changed (my provider's doing) so its now (URL) (which I don't mind as that's my domain, but it confused the hell out of millions :) The old URL (which is no longer) was: (URL) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar for cheap
|
|
Also. The Robot Builders Bonanza has a similar circuit. The price for the parts should be under $10.00. Has anyone tried this circuit? (...) information (...) site (...) ___...___ ___...___ Jonathan Swaby 305 Sparks Bldg Computer Support Specialist (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar for cheap
|
|
(...) Yep, check out: (URL) Mike Vande Weghe (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Sonar for cheap
|
|
A long time ago, someone had posted a link to a website that had information on how to make a sonar sensor pair for $10. Does anyone know where that site is? It must have been about 10-12 months ago. thanks! phil thehahns@nconnect.net (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | V2X Compass
|
|
I have recently obtained a digital compass circuit as part of a clock (it lights an led that points north) but haven't yet tried to interface with it. I think it will be communicating via SPI but I'm not sure. The question I want to ask anybody with (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Serial problems
|
|
Hello, I am trying to get my handyboard working after it has been in a box for a long time. It used to work flawlessly but now I am having trouble downloading the pcode. I did all of the checks for the serial/charger board in the assembly (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar questions (technical ones!)
|
|
My sonar seems to be pretty accurate. I would notice a 25% difference. ??? Check your calculations. Maybe you missed something. ---...--- ericson mar Master of Engineering Candidate Project: Mobile Robotics mar@cooper.edu (212)353-4356 Department of (...) (27 years ago, 26-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Sonar questions (technical ones!)
|
|
Hello everyone, A few sonar questions (other than where to buy them): 1: The speed of sound has been widely quoted to be 0.9 ft/ms (274m/s), but my Physics text lists it as 343 m/s (at 20C/70F), which is about 1.13 ft/ms, or 25% faster. So why the (...) (27 years ago, 25-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar kits (jluijk, willbain,)
|
|
(...) At the bottom of the following page are a couple links to vendors: (URL) page is on the Handy Board site; hit the Software link, then Libraries, then follow the Polaroid sonar link.) In addition, the Robot Store in California sells 'em, but (...) (27 years ago, 25-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Sonar kits
|
|
(...) I would recommend buying the one transducer and module for $50. The extra circuit that you would get with the designer's kit is totally unnecessary if you have the Handy Board already. You only save a few dollars by buying more than one unit, (...) (27 years ago, 24-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | IR connections
|
|
Hi!. I´m trying to connect a IR emitter/receiver boar (Rur Warrior scheme) . I´m going to convert SPI pins in two digital outputs. Can I use the sony receiver?. Can I read this input?. Where?. Is it better connect another IR receiver in an analog (...) (27 years ago, 23-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | UNSUBSCRIBE
|
|
Can you unsubscribe me please: My address is chauhan@csee.usf.edu Regards Sonam (...) - Sonam Chauhan ---...--- WWW Homepage: (URL) sonam@acm.org Phone: (1-813) 6151435 ---...--- (27 years ago, 23-Feb-98, to lugnet.robotics.handyboard)
|
| |
| | Sonar
|
|
Hi WW, is your sonar a Polaroid 6500 series or something else ? Where did you get it ? What did you pay for it ? Thanks, Jan (Giovanni). (27 years ago, 23-Feb-98, to lugnet.robotics.handyboard)
|
