Hi all,
i have a problem with a new emonTX that i finish(most) this days.
-i use the new emonTX pcb (buy it mounth ago)
-complete it but with out AC-AC components on it (just ct1 and ct2)
-i use it with out AC-AC adaptor (obviously)
-use the CT1 interface
-clip it on the phase(not on null) cable of the power grid
-program it with the emonT singleCT example (i use arduino 1.0)
-i use the arduino 1.0 framework
On the zero consum, the monitor give me 0 or 1 or 2 values
If i turn on the flatiron (2000 watts) the monitor give me 8 value
Is there anybody can help me please ?
Thanks all in advance
Denis
p.s. this famous burder resistor is allready on the pcb ? or i must add it ?
Re: new emonTX pcb
Somthing is wrong. Could you post a photo of your emonTx board? That way I can check it all look correct. It should look like this: https://picasaweb.google.com/113226203437598291129/EmonTxV20SingleCTBuild#5670751021382405762
Re: new emonTX pcb
Thanks a lot Glyn
here is the pic:
p.s. just today was arrived the missing MCP1702 ...thanks
Denis
Re: new emonTX pcb
CT1 and CT2 channels look like they have been assembled Ok. The the colours on the voltage divider resistors R2 and R3 for channel CT 2 look a bit odd but I think its just a different shade of violet. They should be 470K which is yellow, violet, yellow, gold/silver. If in doubt you can always check the resistance with a multimeter.
The image on the page details which components do what: http://openenergymonitor.org/emon/node/234
CT3 is missing the 15 ohm burden resistor and 10uF capacitor. But CT1 and CT2 should still work.
So basicly it should work OK. Can you post a photo of how you have clipped the CT round the AC cable? and maybe a shot of the underside of the board?
Re: new emonTX pcb
Thanks again for the help
...so here is the other side: (click on it to see it biger ...i hope:-)
here is the clip picture ... and please can you confirm me the pinout of the AC-AC adaptor if is ok like this ?
and here is again all ... i just begin to put also the AC-AC part:
Thanks again
Denis
Re: new emonTX pcb
What you are doing wit the AC-AC adapter is very dangerous. You should get a proper UK to European plug converter before testing.
The emonTx build look ok. Try again uploading the emonTx single CT example and using the middle (CT2) connection.
Re: new emonTX pcb
Dear Glyn,
now i'm finish the AC-AC adaptor part and i just test it with a 1500 watts
and i just program the emonTX_1CT_Voltage file ... here is the result:
Re: new emonTX pcb
Ah, that looks like it's working better now. Which country do you live? Is your AC voltage 210V?
Calibrating the emonTx is discussed here: http://openenergymonitor.org/emon/node/330