 | | Re: Robot positioning
|
|
William - For my group project, we bought sonar transducers and built circuits for them. Our original recieving circuit is digital rather than analog as we were only going to have one. The circuits we used are on our group's website on our (...) (24 years ago, 12-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: 6.8nF Capacitor
|
|
I don't suppose you know what the formula is for calculating the value of the frequency ?. 1/(R4*C6) possibly ?. This equation gives 38396Hz (38.4KHz) which means that my 6.6nF caps give 39560Hz (39.6KHz) which is closer to 40KHz than the 6.8nF (...) (24 years ago, 12-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Robot positioning
|
|
Hi Kate, I just want to know how/where to get a sonar transmitter/reciever pair with different frequencies for robot positioning. Can sonar module from Polaroid do that? Thanks, William (...) on (...) (24 years ago, 12-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Robot positioning
|
|
If you want to return to "base," all you need is a beacon of some sort. For example, you could use CdS cells (or anything that finds EM in the visible light/low IR range) and a lightbulb (or series of lightbulbs, like a strand of Christms tree (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Melissa Virus
|
|
I have found the source and fortunately it is not from a HB site. It was from the Washington and Lee University EE school. (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Robot positioning
|
|
Hello all, I am currently building a H board/exp board based robot that has (will have) the following sensors: Diffrential drive wheel encoders, hamamatsu sensors combined with the software from the H board site for motor control and distance counts (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Follow-up to Virus
|
|
It is amazing what can be recovered off a disk, with the right tools. This is the data on the virus files. The document, final1r....doc, within the zip file 478eti.zip is the culprit. "This file was quarantined.f M The file (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | File Contains Virus
|
|
There is a file located on one of the HB sites that contains the Melissa W97 virus. It begins with 478... I am sorry that I can not give you more info as the virus scanning software removed the file, but if you maintain a server with HB files on it, (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: four polariod sonars
|
|
Hi, I read the design a while back... Don't you just control the multiplexor circuit on the handyboard and then call the sonar routines? All sonar use the same routine, aren't they? -- Ray JULIAN REYES <handyboard@media.mit.edu> wrote in message (...) (24 years ago, 11-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Handyboard startup problems
|
|
Yes, I encounter something similar. Do you use servo on your board? I also have some trouble with the motor ports. I am not sure what causes it. I also have trouble with the motor ports. When I run the motor at 50% power (back or forward), both red (...) (24 years ago, 10-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | H2000 optical position sensor
|
|
Hi, I am planning to build a position detector with a H2000 chip. The chip is used in several optical mice, for example the H2000/0006 can be found inside the Microsoft IntelliEye mouse. I sill have difficulties in finding the manufacturer and the (...) (24 years ago, 10-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Handboard supplier?
|
|
Try Patrick Hui at Robot Store ( (URL) or for info emailto:info@RobotStoreHK.com ) he sells assembled boards at reasonable prices. (...) (24 years ago, 10-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | serial communications HB - PC
|
|
Hi! I need to know how implement a serial and asyncronous communication (send and recieve data between my PC and my HB) through the computer conector (not through the spi!), Does somebody know how can i do it or what are the hb serial commands or (...) (24 years ago, 9-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | four polariod sonars
|
|
Hi everybody! I´m working in mi mobile robot and for the navigation i want to connect 4 polaroid sonars to my HB, has anybody developed any design? I found in the HB site a multiplexor circuit for connect 4 sonar by adam cox, but i can´t find more (...) (24 years ago, 9-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: Memory erased
|
|
Jose -- Yes, I think that's normal. -- Will (...) (24 years ago, 9-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Memory erased
|
|
Hi, Is it normal that any time I start IC, and the HB sinchronize with it, all the programs in the memory are erased, and there is only the ones the IC download at that moment (the ones in lib_hb.lis) ? If not, what can be the problem? If I use the (...) (24 years ago, 9-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Handboard supplier?
|
|
We are looking for assembled handyboards with the LCD detachable. Pricing and shipping means are requested for F.O.B. our doors in Waterloo, Ontario, Canada. The units will be used for student projects. Thanks (24 years ago, 7-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Any work on using normal IR readings?
|
|
Has anyone done any work on using simple IR sensors as (short) range-finders / proximity detectors? Basically a reflectance sensor, but with a discrete infrared emitter and detector. One of the problems you notice right away when using these is that (...) (24 years ago, 7-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | Re: translation
|
|
Loose translation (by Gary Livick, not known for my language skills, or any skills for that matter): Hi. I'm very interested in knowing how one communicates with an hc12 via the serial port. I'd be grateful if someone could send me all the (...) (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
| |
| | (no subject)
|
|
hola: estoy muy interesada en saber como puedo comunicarme por el puerto serial a partir del microcontrolador 68hc12 de motorola. les agradeceria se me pueden enviar toda la informacion al respecto. gracias por su atencion. (24 years ago, 6-Jul-00, to lugnet.robotics.handyboard)
|
