Unable to get new emonTx working with existing emonPi

Hardware
55

wtf…
this is the output from serial

emonTx V3.4 Discrete Sampling V2.90
OpenEnergyMonitor.org
 
No EEPROM config
RFM69CW Node: 7 Freq: 433Mhz Group: 210
 
POST.....wait 10s
'+++' then [Enter] for RF config mode
CT 1 Cal 90.90
CT 2 Cal 90.90
CT 3 Cal 90.90
CT 4 Cal 16.67
RMS Voltage on AC-AC  is: ~2V
AC-AC NOT detected - Apparent Pwr measure enabled
Assuming VRMS: 230V
Assuming power from batt / 5V USB - power save enabled
CT 3 detected
No temperature sensor
CT1 CT2 CT3 CT4 VRMS/BATT PULSE 
ct1:0,ct2:0,ct3:72,ct4:0,vrms:528,pulse:0
ct1:0,ct2:0,ct3:952,ct4:0,vrms:530,pulse:0  <<<< turn on toaster on ct 3
ct1:0,ct2:0,ct3:916,ct4:0,vrms:528,pulse:0
ct1:0,ct2:0,ct3:904,ct4:0,vrms:528,pulse:0
ct1:0,ct2:0,ct3:20,ct4:0,vrms:528,pulse:0

as I always used CT1 I tried that too…

emonTx V3.4 Discrete Sampling V2.90
OpenEnergyMonitor.org
 
No EEPROM config
RFM69CW Node: 7 Freq: 433Mhz Group: 210
 
POST.....wait 10s
'+++' then [Enter] for RF config mode
CT 1 Cal 90.90
CT 2 Cal 90.90
CT 3 Cal 90.90
CT 4 Cal 16.67
RMS Voltage on AC-AC  is: ~2V
AC-AC NOT detected - Apparent Pwr measure enabled
Assuming VRMS: 230V
Assuming power from batt / 5V USB - power save enabled
CT 1 detected
No temperature sensor
CT1 CT2 CT3 CT4 VRMS/BATT PULSE 
ct1:72,ct2:0,ct3:0,ct4:0,vrms:528,pulse:0
ct1:932,ct2:0,ct3:0,ct4:0,vrms:526,pulse:0 <<<< on
56

Ok great, It looks like the emonTx is working correctly looking at serial output.

I can see you have one CT connected first in CT3 then CT1 . The CT is measuring about 900W and the emonTx is being powered by 5V DC, the voltage reading is about 5.3V.

Your emonTx is running latest firmware. :+1:

57

eheh in italy for such cases we have a saying “l’operazione è riuscita perfettamente, il pazionte è morto”
that is “the surgical operation is perfectly successfull, the patient has died” :smiley:
that is to say: everything went perfectly but it still does not work …

now… the two devices work.
The transmission is somehow not working.
shall we try a group change? If yes how do I do that?

1 Like
58

Do you have the AC:AC adapter connected?

I would recommend trying the same tests with the AC:AC adapter connected and the 5vdc wire to the 6way header disconnected so that you are not powering the emonTx, just reading the serial via the programmer adapter.

These results are not inline with previous results. The AC:AC MUST have been seen because the Vrms was fluctuating around 24500 (245Vrms) and the emonTx is working without batteries or the programmer.

Remember the AC:AC is only looked for at start/reset.

59

Ok stay tuned

emonTx V3.4 Discrete Sampling V2.90
OpenEnergyMonitor.org

No EEPROM config
RFM69CW Node: 7 Freq: 433Mhz Group: 210

POST…wait 10s
‘+++’ then [Enter] for RF config mode
CT 1 Cal 90.90
CT 2 Cal 90.90
CT 3 Cal 90.90
CT 4 Cal 16.67
RMS Voltage on AC-AC is: ~249V
AC-AC detected - Real Power measure enabled
assuming pwr from AC-AC (jumper closed)
Vcal: 268.97
Phase Shift: 1.70
CT 1 detected
No temperature sensor
CT1 CT2 CT3 CT4 VRMS/BATT PULSE
ct1:0,ct2:0,ct3:0,ct4:0,vrms:24644,pulse:0
ct1:0,ct2:0,ct3:0,ct4:0,vrms:24560,pulse:0
ct1:998,ct2:0,ct3:0,ct4:0,vrms:24537,pulse:0
ct1:0,ct2:0,ct3:0,ct4:0,vrms:24606,pulse:0

60

And I think that is also true when powered by the a.c. adapter. You saw 932 W @ 230 V, 998 W @ 245.5 V, those agree quite closely (to about 0.3%).

61

Yup, all that look good. AC and CT1 is being correctly detected

62

That looks better. I think it’s time to contact the shop for a replacement emonTx

I think we can be fairly confident it’s the emonTx rather than the emonPi because resetting the emonTx clears the fault, even if it is only for a couple of seconds. Not as conclusive as I would like, but I think it’s the best we’ll get without a 3rd device to test.

I would be very interested to know what the cause is if you do an autopsy @glyn.hudson

63

Ok… return will be on it’s way tomorrow.
I will order also another emontx more fir the rest of the home loads.
I trust this project from Kickstarter :wink:

64

In that case, just order a second emonTx first, do not send the other one back yet.

If the new emonTx works, go ahead and swap the faulty emonTx over.

If the new emonTx doesn’t work, then it’s the emonPi that needs sorting out, not sure of the warranty position there as it must be a couple of years old now.

65

Well… I already agreed with Glyn on a different solution to avoid multiple shippings.
I Hope the emonpi is not broken… It would become a little too expensive

66

Just to give an update in case someone runs into the same trouble.
Emontx were correctly working (sent back and tested).
It has been impossible to connect them to emonpi.
Our guess is that there’s something (radio) strongly interferring.
At home I have a few devices trasmitting.
Zwave, Zigbee, wifi, proprietary alarm on 868mhz, a few other alarms of neighbours, oregon scientific sensors.
I have selectively disabled each and everyone but no success.

67

if you want to persist and try to find a solution you could initially set up the emontx’s and emonPi elsewhere away from the hose to confirm all works ok and then transport back to the house. keeping all the devices together and with the help of an extension lead, move around the property to see if there are any good spots to narrow the search, it needn’t be an RF device, it could be any electrical device that’s giving off EMI.

Without reading the whole thread again, I cannot recall if serial connections were a plausible option, is it?

68

I switched to wifi huzzah posting to a local server
I don’t have enough time to go in deep in troubleshooting.
Your guess of an electrical device is according to me the best…
the emonpi sits in a closet surrounded by electric devices.

Anyway I am now facing some trouble logging locally and AGAIN some transmission problem between the emontx and the local emoncms …grrr

Got it posting for 15 minutes then nothing more.
rebooted it started posting again correctly

70

I have deleted your duplicate post, It is better to keep the emoncms discussion to the other thread. (Inputs not updating on local EmonCMS - #2 by Nicola_Reina)

This isn’t the best location for rfm or wifi devices.

71

alas is also the only possible

72

If you use a USB wifi adapter (instead of the on-board wifi if Pi 3) you can use a USB extension lead to position the WiFi dongle away from the electrics, even passing through a wall, ceiling or floor if needed.

73

Good idea…
After killing the wife :wink:

74

???

That sounds a little drastic, did you mean WiFi?

75

No, no.
I meant wife.
Do you think I can have an emonpi or antenna visible in the corner of the Leaving room.
You are clearly not married :wink: