 | | Sharp GP2D12 and Expansion Board
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Get a load of this... I have 2 handyboards and 2 expansion boards. I cut the traces to the pull up resistors for analog port 0 on both boards. One handyboard/expansion board worked perfectly with the Sharp GP2D12 analog IR range finder. With the (...) (24 years ago, 1-Dec-00, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D12 and Expansion Board
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When I connect the ground to the analog input for ports 17 to 24 I still read the value 250, when I get the value 0 on any other analog port including port 16. Does this mean my 74HC4051 chip is dead??? "Robin Chahal" <rchahal@hotmail.com> wrote in (...) (24 years ago, 5-Dec-00, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D12 and Expansion Board
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I tried replacing the MUX...that wasn't it. I just noticed that I can read analog(19) through analog(16) but I can't read analog(19) directly...must be an address problem....the question is where. "Robin Chahal" <rchahal@hotmail.com> wrote in (...) (24 years ago, 7-Dec-00, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D12 and Expansion Board
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I've identified the problem a little more but still no idea how to fix it. Analog ports 24 to 31 on the expansion board do not work at all. Analog port 16 on the expansion board works perfectly. If I gound the input to any of analog ports 16 to 23 (...) (24 years ago, 12-Dec-00, to lugnet.robotics.handyboard)
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| | Re: Sharp GP2D12 and Expansion Board
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Also, all the digital ports and servo ports work perfectly on the expansion board and everything works perfectly on the handyboard. "Robin Chahal" <rchahal@hotmail.com> wrote in message news:G5Goq4.B28@lugnet.com... (...) board (...) pull (...) With (...) (24 years ago, 12-Dec-00, to lugnet.robotics.handyboard)
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