 | | Re: Manipulate the LCD in assembler
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Folks, I gave it a little more thought, and had some coffee to wake me up. I remember now! Somehow I blew out the D0 line on my LCD and I had to use 4 bit mode from then on since the upper 4 addresses were still fine. I had forgotten that a long (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Manipulate the LCD in assembler
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At 11:28 PM -0400 on 8/26/97, German Gentile wrote: Folks, Ok, I took a look at the code last night. I found simple errors like not initializing the stack, addressing variables in RAM chip when in single chip mode and forgetting to use # for (...) (27 years ago, 28-Aug-97, to lugnet.robotics.handyboard)
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| | RE: Size Conversions
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These sizes refer to the Unified Thread Standard. A 6-32 thread has 32 threads per inch and a nominal outer diameter of 0.138 inches. There are coarse (UNC) and fine (UNF) series (and some others that are less common), as follows: nom size major dia (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | IC under NT
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(...) IC 3.1 for Windows 95/NT is written from the ground up as a 32-bit windows application, so the serial works fine under NT, regardless of the speed of your machine. If you want to try it out to see if it fixes your problem, here's a 7-day (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | digital ins
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Hello again, I realized a solution to the amplified input problem that is simple and at least worth mentioning. A diode clamp (0-5V) does the job quite nicely, and is easy to build. I got the idea from Horowitz and Hill, "The Art of Electronics", (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Help!!!! Handy Board Problem
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I am going to guess this is a software problem on the PC side. If you can boot your computer in DOS mode, try running IC then. Or find an older box :-(. Freeware DOS IC is known to have serial line comms bugs with some fast machines. NT can't be (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Size Conversions
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I apologize in advance as this question is completely of the list topics but I hope that somebody will have the answer. I am currently building a six legged walker using the Handyboard as the main CPU and using a modified Miniboard using the Servo16 (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: Microphone on a Handyboard
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If you need more than a +200 gain, try an LM358 in single supply mode and use +5v. These are fantastic op-amps and widely available (Digikey). jm (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Re: digital ins
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If you want to exaggerate the response, perhaps a LM339 +5v single supply comparator will do. Set up your circuit to go high(+5v) above your 2-3v range of operation. This solves all your input problems. Loads of manufactures make this thing. Data (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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| | Microphone on a Handyboard
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(...) Assuming you've hooked the LM386's ground to ground and the + voltage to 5v, you should be set hooking the output of the LM386 to the analog input. Do not insert a capacitor in series, as might be shown for hooking up the LM386 to a speaker. (...) (27 years ago, 27-Aug-97, to lugnet.robotics.handyboard)
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