 | | Re: FW: Using the Handyboard without the LCD display
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(...) Hi Look at the Handyboard-webpage under: (URL) you will find the code to use the hb without a lcd bye Martin (23 years ago, 10-Dec-01, to lugnet.robotics.handyboard)
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| | FW: Using the Handyboard without the LCD display
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(...) (23 years ago, 10-Dec-01, to lugnet.robotics.handyboard)
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| | Re: 74hc237
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I know that Mouser have the parts in stock.........but they require a minimum order (100$).......it isn't a great deal........Radio Shack is good but i live in Italy and they don't sell outside U.S.........if you know where i can purchase 74hc237 (...) (23 years ago, 4-Dec-01, to lugnet.robotics.handyboard)
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| | Re: 74hc237
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The 237 isn't an obsolete part. Radio Shack isn't the store it used to be. You need to purchase your parts from a better source. Mouse has the part, 74HC237 Mouser stock # 511-M74HC237 , they are only $0.52, www.mouser.com (...) (23 years ago, 2-Dec-01, to lugnet.robotics.handyboard)
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| | Re: 74hc237
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(...) Alessandro, As far as I know there are now equivelant replacements for the 74hc237. The 74hc138 does the same thing but outputs an inverted signal. If you are any good at electronics you can fudge a 74hc04 into the prototyping area to (...) (23 years ago, 2-Dec-01, to lugnet.robotics.handyboard)
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| | 74hc237
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Hi! I'm a little in a trouble..... I cannot find the ic 74hc237 (3-to-8 Decoder/Demultiplexer with Address Latches) marked U5 on the expansion board......... I have two questions: 1) Can i replace this part with an equivalent one? 2) If (...) (23 years ago, 1-Dec-01, to lugnet.robotics.handyboard)
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| | about peek() and poke()
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Hello, I have some questions about serial communication of the HandyBoard to PC. I tried to write to the serial line from HB. But I found that peek() and poke() functions don't work. (I used "list functions" to list all the functions available, and (...) (23 years ago, 29-Nov-01, to lugnet.robotics.handyboard)
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| | Re: Controlling HB using PC serial port
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(...) I would posit that the easiest way is to use the serial cable. Then you don't have to do new cabling or only work with the digital pins which can also do output. Plus you're not spending your digital ports. You could also go through the SPI, (...) (23 years ago, 25-Nov-01, to lugnet.robotics.handyboard)
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| | Re: Controlling HB using PC serial port
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Yes you can. The easiest way is to use some of the digital inputs and connect them to the parallel port pins. Then using QuickBasic or any parallel port program you can "send" commands to the HandyBoard. If you want to use the serial port then I (...) (23 years ago, 25-Nov-01, to lugnet.robotics.handyboard)
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| | Controlling HB using PC serial port
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Hi all, I am new to the HB world and I am wondering if I can use my computer (PC with Windows OS) to directly control the motors and sensors installed on the HB. Please assume that I have no problem in writing a program for the PC to communicate to (...) (23 years ago, 25-Nov-01, to lugnet.robotics.handyboard)
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