 | | Re: Sonar problems
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(...) You're more than welcome. As for mounting: I have found that custom cutting stainless steel brackets with a dremel tool to be most effective. Sturdy but flexible for purposes of fine adjustment. Basically it's a long tab that slides through (...) (27 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Can the handyboard be taught to talk?
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Hello! REmember when I kept on asking those (yes, maybe annoying) questions about the LCD inputs and outputs? WEll, here's the reason why. On Pages 193 to 200 of the book the Robot Builder's Bonanza- 99 inexpensive robotics projects, author Gordon (...) (27 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Re: analog header
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(...) This is known as an 'impedence mismatch'. Basically your NPN amplifier is incapable of driving the analog input low (which in itself seems a bit weird since you only need to sink .1 mA to do that which suggests that perhaps there is feedback (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Sonar problems
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(...) Hi all, i just tested my polaroid sonar and it works great. Thanks to Kent and Adam. BTW..with the BINH, iwas getting 1"...but when i removed it as suggested by Chuck Manis (in some old mail)...it's reading the correct distances. So i guess (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | (no subject)
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Does anyone have asm (icb) code that utilizes the pinouts of the motor port 1+2 (motor drvr chip removed) to drive a stepper motor. Only 2 digital outputs would be required... one for stepping and the other for selection of direction. Thanks. (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | expansion header
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Does anyone know how I might turn a selected output on the expansion header low. These outputs are normally high and reading the docs tells me this header is used for chips selection. Other than chip selection, this header could be utilized to (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | analog header
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I am currently trying to put together an IR collision avoidance system..... I'm using the HOA2498-002 IR diode/transistor package which is hooked up to a darlington pair (increased sensitivity) Using a digital output to turn on the diode via a (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Re: Sonar problems
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I remeber there being some kinda control character like a line feel or something. This is due to the difference in environments, DOS, unix, etc. This might be the cause of your problem. I think I had some trouble with this too but I forgot all about (...) (28 years ago, 5-Apr-97, to lugnet.robotics.handyboard)
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| | Better assembly code
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I went home and got my Pink book, the menemonics on this 'software output only' UART are now correct (assume PORTA bit 7 (PAI) as the output pin) ; ; Called with character to send in A ; Destroys A, B, and X ; serout:: SEI ; disable interrupts LDX (...) (28 years ago, 4-Apr-97, to lugnet.robotics.handyboard)
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| | Sonar problems
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I have The Polaroid sonar system hooked up as stated in the readme file that is on the web page but I can't get it to work. I downloaded the five programs in the sonar directory and when I try to download them I get errors. I can't get the ICB file (...) (28 years ago, 4-Apr-97, to lugnet.robotics.handyboard)
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