 | | Got some code for you: Sonar on handy in feet & inches!
|
|
Hi, I wanted to see how to convert the sonar hits into feet in inches. Well as the textbook rule goes it looke like it takes 333.333 ticks = 1 inch round trip. Since the timer is running 2,000,000 counts per second. But in real life I had to fudge (...) (26 years ago, 14-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Hall Effect Encoder = sloppy, going optical
|
|
Well the Quad hall effect switch encoder does not give repeable resolution. If I say 14 ticks = right turn (motors going in opposite direction) well. sometime it is on the money, sometime it's not. And I don't have a racer.. I have it running slow (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Rover based on Hanyboard is evolving well!
|
|
Sure.. hey I thought I replied to the list. Here's the picture so far.. note: lugenet doesn't allow jpeg attachments so You will get the image, lugenet will reject them. I am hoping to put up a webpage soon. I've got a few sensors I am designing (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | **cant use 100 step mtr prgrm wth...
|
|
Hi, I am trying to use the 100 step motor code and a Hb expansion board. I can get either one of them to work ALONE ONLY. So I can only use the expansion board. OR the 100 step pcode, How do I install both so they dont conflict with one another. (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Problems with microprocesseurs
|
|
Hello, I work with a Handy Board and an other board based on 68hc11E2. The first is master and the second is slave. The SPI communication is OK between 2 boards. The first send the position of servos to the second. At the start, all is OK. After 2 (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Rover based on Hanyboard is evolving well!
|
|
Hi You can only run the counter 4x slower as now. But in this case, the complete HB works 4x times slower, so this isn't a usefull solution. The other possibility is the use the overflow flag and integers. I didn't solve that problem. For more (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Rover based on Hanyboard is evolving well!
|
|
Hi, I managed to build up a pan & tilt platform for my rover out of Servos, I hot glued them together and built a mount for my ultrasonic transducer out of perfboard. Also you need to make a baffle for the rear of the transducer or you do get (...) (26 years ago, 13-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | RE: Here's the Rover with handyboard
|
|
Please let us out of your list. ---...--- Click here for Free Video!! (URL) Original Message ----- From: T. Gathright <terrygathright@home.com> To: Jerry Normandin <jerrynormandin@ne.m...aone.net>; <handyboard@media.mit.edu> Sent: Monday, September (...) (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Peekword returns an int... can I typecast in Interactive C?
|
|
Hello, my problem is that peekword returns an int. I need a long. Is there a way around this in Interactive C??? (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Interactive C question can you cast an int to a long?
|
|
Hi, I have an interactive C question, I'd like to return this: return peekword(0x1014) - start_time; as a long.. since this is why there's a distance limit in the sonar.c code. Can I return this as a long? (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | possibly the way the driver is written limiting sonar range?
|
|
Hi, I was playing with my handyboard's sonar.. The distance limitation is in the code, since we are using integers we are limited to -32,778 to 32,768.. and that's why I am at @15 ft limit. After we change the sonar code to longs the problem is (...) (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Here's the code I wrote so far, any ideas why my Polaroid 6500 has only 15ft range?
|
|
Hi everyone, Here's some code that I have so far. I have no clue why I only get 15' range out of my Polaroid 6500. I did not get the usual fastener that clasps the tranducer into place, could that do it? My tansducer is mounted on "sensor array" (...) (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Polaroid 6500 ranging.. only getting 15ft range!
|
|
Hi, How do you get 35ft range out of the handyboard? I get a negetive number when hitting an object over 15ft away! Does anyone else have this problem? Can I adjust it somehow? Thanks! (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | handy board
|
|
Hello, I am in need of some assistance please. I am trying to have a portable omni view digital camera take compressed mjpeg images and send them over a modem connection. To do this I believe I would need a handy board. Another characteristic of it (...) (26 years ago, 12-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | TI-92
|
|
Have anybody link a TI-92 (Texas Instruments Calculator). Because I fail on my first try. And only got a cero value form the TI-92. Any Help? Thanks Daniel R (26 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | IR Reception
|
|
I posted this question previously but got no reply so I am trying again. I have mounted the IS1U60 infrared demodulator on to the HB but I have realised that it can only recieve from a particular direction. Is it possible to mount another IS1U60 by (...) (26 years ago, 11-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Encoders
|
|
IC can't sample the A/D converters that quickly. As long as you're generating a nice squarewave you could connect it to one of the input capture pins and write a custom interrupt routine to maintain the count. --Chuck (...) (26 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Encoders
|
|
Since some are on the subject of encoders, I have a problem I would like to get help on. I have a hall effect sensor dutifully counting pulses on a gear. The gear will rotate from 800-4000 RPM. I am running the signal through a 741 OP Amp to (...) (26 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Encoders, what are you using?
|
|
Jerry, go to: EE 401 - Electrical Engineering Design Course - 1999/2000 then to shaft encoders they have 16, 32, or 64 sections you can print out. bye, Terry G. ----- Original Message ----- From: "Jerry Normandin" <jerrynormandin@ne.m...iaone.net> (...) (26 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
|
| |
| | I fixed my slop!
|
|
Hey.. I added a quick reverse drive to the moter.. it turns out my slop was the drive system coasting! I added brake and I am more accurate now!!!!!!! (26 years ago, 10-Sep-00, to lugnet.robotics.handyboard)
|
