 | | Re: Analog I/O as Digital I/O
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(...) Since the analog inputs read voltage levels, you should be able to just plug in any switch or 5-0volt input directly. To read the values, use the analog command, and in theory you should only get two possible values, 255 for +5volts, and 0 for (...) (25 years ago, 27-Sep-99, to lugnet.robotics.handyboard)
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| | Analog I/O as Digital I/O
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Can the analog input lines be used as a digital input lines (if there is no requirement of analog input)? Because, these lines are connected to the port E of 68hc11, then what are modifications required in the code? Asim Kar. City University of Hong (...) (25 years ago, 27-Sep-99, to lugnet.robotics.handyboard)
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| | Serial transmiter
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Does anyone know of a 9600(8,N,1) serial port transmitter? Or have plans for one? I need one for a telepresence robot that I am designing, Also it needs to be as high of power as it can be I am a HAM novice if it makes a difference Andrew Holland (...) (25 years ago, 25-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Using 12V supply with Expansion Board?
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Duhhhh....don't forget to put heat sink on the 293 motor drivers or else you will fry it! Thank You Bart Chrijver for the reminding. Rob (25 years ago, 25-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Using 12V supply with Expansion Board?
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At 12:13 AM 9/25/99 -0700, you wrote: I've look at the electrical schematic for both the Handy Board and Expansion and this is what I got. Because the expansion board only share the handy board's motor output for its Servo outputs, I don't think you (...) (25 years ago, 25-Sep-99, to lugnet.robotics.handyboard)
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| | [OT] HandyBoard batteries
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Hi All: Found: An excellent source for inexpensive HB batteries. They are new 2 AA (800mAh) cells in series for US$0.99 each. I bought 12 of them for $7.14 ... connected four of them in series and added a female connector ... added a male connector (...) (25 years ago, 25-Sep-99, to lugnet.robotics.handyboard)
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| | Re: error when loading *.icb file
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this is a known problem. see the FAQ: (URL) your message you said: (...) (25 years ago, 24-Sep-99, to lugnet.robotics.handyboard)
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| | Re: error when loading *.icb file
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I had the same problem. When I run as11-ic on my MAC, I have no problem. When I do it on an IBM clone, I cannot load it into the Handy Board. I fixed it by hand-editing out the comment line (its in human language) in the generated .s19 file and it (...) (25 years ago, 24-Sep-99, to lugnet.robotics.handyboard)
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| | EXTENSION BOARD
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I every one, I have a problem, is it possible to have an extension board connected to the HB, and at the same time have a seperate motor power source? The reason I'm asking this is because that the "seperate motor power source" and "extension board" (...) (25 years ago, 24-Sep-99, to lugnet.robotics.handyboard)
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| | error when loading *.icb file
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Hi, I have downloaded the as11 assembler. When I assemble a *.asm file, a *.icb file was created. Then I whated to load the file in the HB but the message "Fatal internal error: Illegal line in .s19 file" was dispayed on the monitor. What's the (...) (25 years ago, 24-Sep-99, to lugnet.robotics.handyboard)
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| | No objection
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Gary Livick wrote: <snip> (...) I don't mind that sort of solicitation. I think it's great that you're helping the Handy Board community by developing HB robotics accessories. I might end up being a customer when you get it up & running. Good luck (...) (25 years ago, 24-Sep-99, to lugnet.robotics.handyboard)
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| | OptoIsolators
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Regarding the serial port isolator (opto-isolators are good for this) you might see if www.blackbox.com has something along those lines. You could also look up parts similar to the 4N33 to see if you could use something like that in a design. Not (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Using 12V supply with Exp Board (2nd posting)
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Hi all, This is a second posting of the question I posted up several days ago. So I apologize in advance for any inconvenience if you've already got my first posting. Anyways, I am currently using the 9.6V supply voltage on the HB and hoping to step (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Computer Serial Port Optoisolator
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This is somewhat off subject, but I am looking for a circuit schematic that will show how to build a serial port optoisolator for my computer. The problem I am having is that once in a while I wire a circuit wrong and end up putting 115V onto the (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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Dear Paul, I have an H-bridge that I designed to run big motors. It runs at two amps continuous, and three amps intermittantly. It uses 5 volts for logic from your Handyboard, and 12 volts from a gel cell to run the motors. It also has an analog (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: OVER 1 AMP
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(...) www.yahoo.com, search for "H Bridge", trust me, lots of hits will comeup. Look for the 4QD pages, they talk a lot about H Bridge designs. If you aren't comfortable with electronic design, don't bother though... (...) This IS an H Bridge. Its a (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | OVER 1 AMP
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Now, I recieved two good answers for my problems. 1) Built an H-Bridge 2) Use the LMD18200 Now has any one any documentation on an easy H bridge that I could build without wasting much time? The same goes for the LMD18200, I understand that is not (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: before I reinvent the wheel
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No, but I have used my HP48sx to control the Fascinating Electronics board as well as an NRD535 shortwave receiver. The serial I/O of the HP48 is limited to shield, ground, tx and rx pins so in both cases I had to wire special cables to jumper (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Source for IS1U60
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Hi Igor - - When you need to locate parts, try this link: (URL) found a couple of sources for the IS1U60 through them. - Nick - (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Source for IS1U60
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(...) Addendum to my last post. For my money, I would get the LiteOn unit instead. Its less fragile (nifty metal can) and has the same pinout as the Sharp GP1U58Y units, and you can get them in a variety of frequencies at (URL) Part Number 160-1153, (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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