 | | 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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