Ask questions about the GEM here.
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ben
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by ben » Wed Dec 03, 2014 1:33 pm
seanwg wrote:Just 1 sensor right now.
Sensor is direct from digikey.
I might try running on an arduino... I have some friends who used these, and they never saw any problems
Sean
I don't suspect the sensor to be bad so I wouldn't bother spending time with the Arduino unless you plan on using that permanently. 128C indicates the GEM couldn't read a poll.
Is it a parasitic version of the sensor? If so, you definitely need that pullup.
Ben
Brultech Research Inc.
E: ben(at)brultech.com
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acciaigf
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by acciaigf » Wed Jan 14, 2015 2:37 pm
So what is a "typical good value" for the pull-up resistor? - I'm guess 1K or 5K ohms?
Just mount that right on the GEM terminal header between terminals 3 & 4?
Just checking that my understand is correct here...
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ben
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by ben » Wed Jan 14, 2015 4:56 pm
acciaigf wrote:So what is a "typical good value" for the pull-up resistor? - I'm guess 1K or 5K ohms?
Just mount that right on the GEM terminal header between terminals 3 & 4?
Just checking that my understand is correct here...
Pauls currently not in and I'm not much of an electronics guy, but he indicated a "strong" pullup before.
It looks like we have 2 1.6K 2% resistors in series connected to our demo unit here.
Ben
Brultech Research Inc.
E: ben(at)brultech.com
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ben
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by ben » Thu Jan 15, 2015 10:25 am
Correction, they're 2 1K 5% resistors. The black looked like blue and gold looked like white at the end of the day yesterday.
Ben
Brultech Research Inc.
E: ben(at)brultech.com
