Can't calibrate ampdata too random

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mikejr88
 
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Re: Can't calibrate ampdata too random

Post by mikejr88 »

No other xbees.
Doesn't matter what number I use. Even with EnergyLogger, I can't calibrate amps.
KaW - volts 117 amps 0.05
My fluke meter agrees with the KaW, 117 volts.
Oh, and thanks for the kind comment about my camera. I built a light tent out of a card board box and tissue paper to take the pics. If I only had a macro lens.

adafruit
 
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Re: Can't calibrate ampdata too random

Post by adafruit »

50mA is not that much error. might just be the error you have to live with :(

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mikejr88
 
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Re: Can't calibrate ampdata too random

Post by mikejr88 »

I can live with the 50mA being displayed on the KaW. My problem is with what I'm getting from the Xbee. The watcher script is reporting 1.5 to 2 amps unloaded, and I can't calibrate. Doesn't matter what calibration number I use in the script. EnergyLogger GUI does not calibrate either.

adafruit
 
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Re: Can't calibrate ampdata too random

Post by adafruit »

OK...try swapping the orange and yellow lines...plug it in & wait a few minutes before starting up the python script
then paste up the debug output

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mikejr88
 
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Re: Can't calibrate ampdata too random

Post by mikejr88 »

I think the KaW with the surface mount chips can't supply the power needed, I could be wrong. I lifted the white wire and hooked up a 5 volt power supply and the watcher screen was perfect 489. Can an inductor be added to help supply the current needed for the xbee?

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Re: Can't calibrate ampdata too random

Post by adafruit »

make the wake-up delay 5 seconds instead of 2

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kjake
 
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Re: Can't calibrate ampdata too random

Post by kjake »

sorry to resurrect this old thread, but my TaW is not quite accurate either and I have the newer KaW model as well.

I just updated my transmitter to use a 5 second sleep time and that does appear to be more accurate now. My readings should be upper 400's to 550 for usual, average power consumption, but I was seeing over 550 and 600 sometimes and wild jumps from upper 400's to over 600. Thanks for the suggestion Limor!

Should be able to see more normal data over time here: http://j.mp/6ifI1Y

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