 | | digital out
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| I am in the need for additional digital outputs. I have read the FAQ and found out that to get 8 more digital outs, I have to connect the 'hc374' clock line to any of the unused output latch selects of the 'hc138'. Has anyone done this? If so, any (...) (28 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
| | | | | Pull Up Resistor
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| Hi, The polaroid documentation mentions that a 4.7K resistor should be placed between ECHO and Vcc. Should this be done when interfacing to the HB? Thanks, Sheridan (28 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
| | | | | Handy Board for Sale!
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| To Anyone Interested, I have a nearly brand new complete Handy Board for Sale. I used it one week and unfortunately it does not have the capability to do what I want. It is complete with battery installed, serial/charger board, software for IBM, (...) (28 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
| | | | | General use PCB
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| We have been using the Radio Shack, Archer board #276-162A. Specifications: Dimensions 3 inches x 4 inches, with copper lands on one side. 30 holes by 25 holes with mounting holes at 2.5 inch and 3.5 inch spacing. We have to told that Radio Shack (...) (28 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
| | | | | Re: Pull Up Resistor
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| (...) The sensor connectors on the HB already have pullup resistors on the signal inputs (as I recall they were 47K), so you shouldn't need to add an additional pullup. If you want to make sure, just check the signal connection with a voltmeter to (...) (28 years ago, 5-Aug-98, to lugnet.robotics.handyboard)
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