 | | 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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| | Re: Source for IS1U60
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(...) (URL) carries them, but they currently say they have no stock, you'd have to find what their lead-time is. Also, a Canadian firm (URL) carries them, and they DO have them in stock. HVW's cost about US$1.00 more, but at least you can get them! (...) (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Source for IS1U60
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Hi! Can anybody point me to a mail order company who carries the Sharp IS1U60 infrared demodulator? Thanx...Igor (25 years ago, 23-Sep-99, to lugnet.robotics.handyboard)
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| | Re: Good place to but miniboard?
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(...) First off, how much are you looking to pay? It can be built fairly cheaply if you are interested. Second, there is a mailing list for the miniboard. Check out Fred Martin's FTP site relating to the miniboard for the details. It's all in there. (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Good place to but miniboard?
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hi Was just wondering if you guys now of a cheap place to buy a miniboard(kit or assemebled) or if any of you are willing to part with one you have lyeing around the shop. Also is there a mailing list like this one for the Miniboard? Has any one (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: before I reinvent the wheel
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Doh! I should have said I was planning on using IR, but a serial cable makes more sense (at least to start with)... Thanks, Paul Adam Oliver wrote in message <001401bf04c9$2bdb67...c@adam>... I haven't actually done this, but I'm pretty sure the (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | differential steering
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Hi, I what to built a four wheeled robot which uses differential steering. Have somebody an idea to transfer the motion energy from the motor powered back wheels to the front wheels? Jens (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | Re: before I reinvent the wheel
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before I reinvent the wheelI haven't actually done this, but I'm pretty sure the theory is ok... On the handyboard web page is the pa79600 icb file which lets you use port a bit 7 as serial i/o. I have successfully used this to control some (...) (25 years ago, 22-Sep-99, to lugnet.robotics.handyboard)
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| | before I reinvent the wheel
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Has anyone used their HP48 to talk to a handyboard? (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | Using 12V supply with Expansion Board?
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Hello 'Botter, I think I am about to ask a stupid question but as a precaution, will the Expansion board be "ok" with a new 12V motor supply rather than the 9.6V connected to the Power Expansion header (J13)on the HB since the Expansion board and HB (...) (25 years ago, 21-Sep-99, to lugnet.robotics.handyboard)
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| | (canceled)
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