 | | Re: System Interrupts & frequency counting
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(...) I'm unfamiliar with the workings of IC, but if your interrupt service routine is sufficiently short, and you don't reset the interrupt mask to enable recursive interrupts, you shouldn't notice the difference. You asked if there was a more (...) (27 years ago, 9-Jun-97, to lugnet.robotics.handyboard)
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| | System Interrupts & frequency counting
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I'm in the middle of planning/writing a small program that will read a digital input to determine it's frequency & pulse width. I thought it'd be nice to have this part of the program (in assembly) running off the system interrupt so that these (...) (27 years ago, 9-Jun-97, to lugnet.robotics.handyboard)
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| | Handy board weight
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I'm working with a robot where weight is very important. I was wondering if anyone had the exact weight of the Handy board, Miniboard and the Nicad battery pack that the Handy board uses? Thanks, Daryl Boyd (27 years ago, 9-Jun-97, to lugnet.robotics.handyboard)
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| | Maze madness
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Maze-running competitions are one of the earliest ways used to test mobile robots. They force developers to build mechanical mice that quickly learn the most effective path to a goal and reach it in the shortest time. The mazes range from tabletop (...) (27 years ago, 9-Jun-97, to lugnet.robotics.handyboard)
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| | Re: Shaft Encoder
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(...) Here are two articles that may help you do direction sensing: Improved tachometer eliminates backlash by Andrew Dart EDN March 31, 1987 Page 210 Tachometer circuit reduces parts count by William McClelland Shows an improved circuit based upon (...) (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | serial io again...
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(...) Nevermind folks, I figured it out. It was my setup of the com port in TurboC. Here is the code I used to solve the problem if anyone is interested... #define PORT1 0x2F8 /* com2 */ void initialize_comport(void) { outportb(PORT1+1,0); /* turn (...) (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | Shaft Encoder
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Hi, Do anyone know how to connect up two channel shaft encoder and able to read in the direction of turning? Please help... Johnny (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | RE: HBDL still not working with win95...
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2 things to try... first... slow down the baud... 9600 should be fine for a 64k program... it may take a min but how much speed do you need?... if that works... try 19200, 38700, blah blah blah... if neither of those work... jump into your bios and (...) (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | HBDL still not working with win95...
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Big thanks to everyone who respnded to my original question. I have essentially ruled out an IRQ conflict. I have a PS/2 mouse (IRQ 12) and only com1 (serial port) and com2 (modem) are enabled. HBDL always returns the addressing error while (...) (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | Serial IO
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I am trying to get my handyboard communicating with a TurboC program through the com2 port on my computer. I have been attempting to use the routine found in serialio.c on the website. Say I have an infinite loop setup on my handyboard that looks (...) (27 years ago, 8-Jun-97, to lugnet.robotics.handyboard)
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| | Using HBDL with a fast Pentium?
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Hi all, I've seen questions about this before, but can't recall anyone posting a solution. The problem is that I can't get HBDL to work in Win95 on a P166. When trying to download, the process works okay until I get an error dialog box that says: (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | HB assembled for sale
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Reluctantly I will sell my assembled Handyboard for $200 to the first taker. The ONLY reason I'll do this is I'm out of work temporarily on medical and must refocus my energies. I live in York, ME and can be contacted by (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | hey!!! it's a god serial board!!!
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i'm not one to sell stuff... but i thought you guys might be interested in this... usb might make this product obsolete, but i'm thinking about getting one dual r2-232 (duh) 16650 UART 460.8Kbps!!!...!!! ideal for modems, isdn, and terminal adapters (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | Handy Board for Sale
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Reluctantly I will sell my assembled Handyboard for $200 to the first taker. The ONLY reason I'll do this is I'm out of work temporarily on medical and must refocus my energies. I live in York, ME and can be contacted by (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | My IR detector design
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For all of you who have looked at my design for a 16 sensor IR proximity detector I have a few updates for you. I have been working with the circuit for about a week now and I have discovered a few things that will make the circuit more stable. They (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | My IR detector design
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For all of you who have looked at my design for a 16 sensor IR proximity detector I have a few updates for you. I have been working with the circuit for about a week now and I have discovered a few things that will make the circuit more stable. They (...) (27 years ago, 7-Jun-97, to lugnet.robotics.handyboard)
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| | Re: CV: FW: Time to get political!
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Why am i getting all this crap? i dont care about stupid gay planes rides and stuff. (27 years ago, 6-Jun-97, to lugnet.robotics.handyboard)
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| | my first question
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Hi. ive read all the posts from this year but cant seem to find the right answer. i get the following message when i start to download: 6811 .s19 file downloader. Version 7.2 Mar 14 1994 by Randy Sargent Using the modem port. Please place board in (...) (27 years ago, 5-Jun-97, to lugnet.robotics.handyboard)
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| | Handyboard Troubleshooting
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I was given a Handyboard v1.2 some friends of mine and it wasn't functioning correctly. I used the assembly and troubleshooting instructions to try and get things working, and then I got stuck.. Here's the deal: I got to step 6.0.5, testing the LCD (...) (27 years ago, 5-Jun-97, to lugnet.robotics.handyboard)
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| | sorry!!!!
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i guess i double clicked on this address as well as all the others!!! sorry... i'll be more careful.... ---...--- From: Randy Eaton Sent: Friday, June 06, 1997 12:32 PM To: killkie Subject: Re: FW: Time to get political! (...) Stumpf; Andra Blythe (...) (27 years ago, 5-Jun-97, to lugnet.robotics.handyboard)
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