 | | Bend Sensors
|
|
Hi, After alot of replies to my wall following problem, loads of people have suggested bend sensors. Although I have considered these, I do not know where to get them in the UK, or any companies that ship them in the US. Does anyone know of any (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: ir-transmitter
|
|
At 07:48 PM 3/24/98 -0800, Richard wrote: <snip> (...) Aluminum foil will stop everything bigger than x-rays (and that includes IR). A CD looks highly reflective, but it probably refracts and reflects a lot of energy, too. I realize they don't send (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | ir-transmitter
|
|
I was wondering if anyone has used IR transmission in their programs and if so, do you have a bit of simple sample code i could take a look at and if you knew variable ranges or anything. Also..does anyone know a common household material that will (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Wall Following
|
|
I wrote a similar type scenario using a PIC (pre handyboard user)... The trick I found was not to rely on a single return, but multiple. That is, use a counter, to count the number of hits. Use 64 as a base number, count down for each hit, up for a (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Wall Following
|
|
(...) Correction: the problem has been the *bane* of your life--not the bain. I'm the bain of everyone's life. (...) The best solution to the problem that I've seen is in the 6.270 Robot Builder's Guide, which can be downloaded off of the documents (...) (27 years ago, 25-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Wall Following
|
|
<snip> My aim in this project is to build a robot from a Fischertechnik kit, and control it with a 6.270 board, with the aim being firstly to wall follow, and secondly to build a Self-Organising Neural Network representation of the environment. (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Help reading pulsewidth. Thanks.
|
|
Thanks All, With the help you provided I think PipeBot will be a success. It is about to go on it's first test sortie under the house with an umbilical and tether. The umbilical is tied to three of the digital inputs so I can take over control if (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Wall Following
|
|
Hi All, A major problem, that has been the bain of my life for the last 3 months. I am a third year undergraduate at the University of Sheffield, England, and for my dissertation I am undertaking a project entitled Autonomous Mobile Robotics. My aim (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Extending the HB memory... I know, I know...
|
|
I couldn't sleep so I thought I would make some use of my insomnia. Several people have asked if the HB's memory can be extended, and usually the answer is no, not if you want to run IC. I have been taking a break from my navigation systems, and (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: IR-DATA
|
|
(...) The cool thing is that you don't have to reset it; it resets itself automatically. When you call the function ir_data( 0 ), it returns the last IR signal received, or zero if nothing has been received since the last time you called it. --Will (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Assembly language routines for Printing
|
|
Hello All, I am attempting to display characters on the Handy Board screen, using pure assembly. I know the routine needs to be copied to internal RAM, put in single chip mode, then activate the display - as stated by the hardware reference manual. (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | IR-DATA
|
|
This must seem really elementary to everyone, but inside of my program, how do i reset the value of the ir_data? I've been trying everything in the handyboard technical references but it gives me either a syntax error or Cannot assign type <pointer (...) (27 years ago, 24-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Help reading pulsewidth.
|
|
(...) Handy Boarders: I cannot resist putting in a couple of plugs here for two good related resources: 1) The 68HC11 Microcontroller by Joseph Greenfield. This comprehensive book has a very nice section on reading/writing to I/O ports using timer (...) (27 years ago, 23-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Help reading pulsewidth. Duh!
|
|
After sutdying the schmatics for an hour, I got up to get something to drink. When I came back I noticed that digital 1 is connected directly to the IC 1 input line and digital 2 goes to IC2 via a pullup resistor. It seems that the answer was right (...) (27 years ago, 23-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: Help reading pulsewidth.
|
|
(...) <snip> Sure. Use an oscilloscope. It seems to me that if you're looking to hook up the receiver to the HB, couldn't you instead just run the receiver output through a capacitor to smooth it out (and maybe a resistor to scale the voltage) and (...) (27 years ago, 23-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Re: handyboard and palmpilot
|
|
yeah, I know what you mean... I have a TI-83 graphing calculator (www.ti.com) and have been thinking the same thing. Check up in your reference manual to see if it has anything on its protocols. My TI calculator uses an easy send and recieve (...) (27 years ago, 23-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | Help reading pulsewidth.
|
|
Hi all. Is there a way for me to read the pulsewidth comming out of a RC receiver? What I'm trying to do is to have an onboard Futaba R/C receiver just in case my bot gets into trouble that it can't get out of on it's own. I want to use my HB (...) (27 years ago, 23-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | KOREAN MANUFACTURERS VISIT HONG KONG
|
|
We are proud to invite you on April 3, 1998 to exhibit various famous commodities manufactured in Korea. For Full Details, please reply now with your Name, Company Name, Phone, & Fax numbers. mailto:mrkg@hkstar.c...EXHIBITION (27 years ago, 22-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | BEAM ETC. ROBOTS
|
|
I've just been looking into BEAM robotics recently and it is very, very interesting indeed. Mark Tilden's claims may be hard to believe and it seems counter-intuitive, but I think he has his head screwed on right and I definitely reckon that the (...) (27 years ago, 22-Mar-98, to lugnet.robotics.handyboard)
|
| |
| | KOREAN MANUFACTURERS VISIT HONG KONG
|
|
We are proud to invite you on April 3, 1998 to exhibit various famous commodities manufactured in Korea. For Full Details, please reply now with your Name, Company Name, Phone, & Fax numbers. mailto:mrkg@hkstar.c...EXHIBITION (27 years ago, 22-Mar-98, to lugnet.robotics.handyboard)
|
