 | | Re: Chaining multiple RCX's output to input —Michael Gasperi
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| | | Eric Brok <brok@fcjsvc.hvu.nl> wrote in message news:FK9Lxs.49z@lugnet.com... (...) more (...) Using a motor as a tachometer has come up before and I used to be worried about this causing damage. I have it from the LEGO engineers I met at mindfest (...) (25 years ago, 27-Oct-99, to lugnet.robotics)
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| | | | | Re: Chaining multiple RCX's output to input —Stephen Unwin
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| | | | (...) Pop a 10K ohm resistor in series with the motor. On my quick test with a variable resistor I got a value of 513 with the resistor at 9.7k. With a 10k resistor, the RCX raw value is now flickering between 510 and 511. P.S. same with the older (...) (25 years ago, 27-Oct-99, to lugnet.robotics)
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| | | | | | Re: Chaining multiple RCX's output to input —Michael Gasperi
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| | | | Stephen Unwin <lego-robotics@crynwr.com> wrote in message news:Marcel-1.53-102...n.co.uk... (...) That makes sense cause the RCX has a 10K pulling the input up to 5V. The 10K you put in series with the motor will put the voltage at half way (2.5V) (...) (25 years ago, 27-Oct-99, to lugnet.robotics)
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| | | | | | Re: Chaining multiple RCX's output to input —Robert Munafo
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| | | | I use two resistors in series with the motor (one between the + side of the sensor port and the + side of the motor, and the other between the - side of the motor and the - side of the sensor port). That allows the additional advantages that: - the (...) (25 years ago, 28-Oct-99, to lugnet.robotics)
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