Spikes in data

I need a bit of help tracking down an issue.

I’m seeing random spikes in data trends in EmonCMS and I’m having some trouble tracking down the source. They’re not confined to one node but spread across several nodes consisting of EmonTH’s and an emonTXv3.

Here is one that showed up this morning on a temperature point coming from an emontx.

It shows it spiking down to 28.8 degrees which cant really be a true reading.

What I cant find by looking on in the emonhub log is the source of the 28.8 deg. A search through the complete log for around that time period doesnt show the 28.8 figure anywhere.

These I think are the related data packets for that time period from the node. Temperature T2 from Node 15 is the Boiler Outlet temperature in the trend.

2022-12-30 10:45:21,674 DEBUG    RFM2Pi     6128368 From Node : 15
2022-12-30 10:45:21,674 DEBUG    RFM2Pi     6128368    Values : [1144001, 243.3, 0, 0, 0, 2, 0, 0, 0, 85346, 33.25, 35.87, 300, 2884]
2022-12-30 10:45:21,675 DEBUG    RFM2Pi     6128368      RSSI : -63
2022-12-30 10:45:21,675 DEBUG    RFM2Pi     6128368 Sent to channel(start)' : ToEmonCMS
2022-12-30 10:45:21,676 DEBUG    RFM2Pi     6128368 Sent to channel(end)' : ToEmonCMS
2022-12-30 10:45:21,750 DEBUG    MQTT       Publishing: emon/emontx3cm15/MSG 1144001
2022-12-30 10:45:21,752 DEBUG    MQTT       Publishing: emon/emontx3cm15/Vrms 243.3
2022-12-30 10:45:21,753 DEBUG    MQTT       Publishing: emon/emontx3cm15/P1 0
2022-12-30 10:45:21,755 DEBUG    MQTT       Publishing: emon/emontx3cm15/P2 0
2022-12-30 10:45:21,756 DEBUG    MQTT       Publishing: emon/emontx3cm15/P3 0
2022-12-30 10:45:21,757 DEBUG    MQTT       Publishing: emon/emontx3cm15/P4 2
2022-12-30 10:45:21,759 DEBUG    MQTT       Publishing: emon/emontx3cm15/E1 0
2022-12-30 10:45:21,760 DEBUG    MQTT       Publishing: emon/emontx3cm15/E2 0
2022-12-30 10:45:21,761 DEBUG    MQTT       Publishing: emon/emontx3cm15/E3 0
2022-12-30 10:45:21,763 DEBUG    MQTT       Publishing: emon/emontx3cm15/E4 85346
2022-12-30 10:45:21,764 DEBUG    MQTT       Publishing: emon/emontx3cm15/T1 33.25
2022-12-30 10:45:21,765 DEBUG    MQTT       Publishing: emon/emontx3cm15/T2 35.87
2022-12-30 10:45:21,767 DEBUG    MQTT       Publishing: emon/emontx3cm15/T3 300
2022-12-30 10:45:21,768 DEBUG    MQTT       Publishing: emon/emontx3cm15/pulse 2884
2022-12-30 10:45:21,769 DEBUG    MQTT       Publishing: emon/emontx3cm15/rssi -63
2022-12-30 10:45:21,771 INFO     MQTT       Publishing 'node' formatted msg
2022-12-30 10:45:21,772 DEBUG    MQTT       Publishing: emonhub/rx/15/values 1144001,243.3,0,0,0,2,0,0,0,85346,33.25,35.87,300,2884,-63

2022-12-30 10:45:31,638 DEBUG    RFM2Pi     6128375 From Node : 15
2022-12-30 10:45:31,638 DEBUG    RFM2Pi     6128375    Values : [1144002, 243.31, 0, 0, 0, 2, 0, 0, 0, 85346, 33.12, 35.62, 300, 2884]
2022-12-30 10:45:31,639 DEBUG    RFM2Pi     6128375      RSSI : -63
2022-12-30 10:45:31,639 DEBUG    RFM2Pi     6128375 Sent to channel(start)' : ToEmonCMS
2022-12-30 10:45:31,640 DEBUG    RFM2Pi     6128375 Sent to channel(end)' : ToEmonCMS
2022-12-30 10:45:31,823 DEBUG    MQTT       Publishing: emon/emontx3cm15/MSG 1144002
2022-12-30 10:45:31,825 DEBUG    MQTT       Publishing: emon/emontx3cm15/Vrms 243.31
2022-12-30 10:45:31,826 DEBUG    MQTT       Publishing: emon/emontx3cm15/P1 0
2022-12-30 10:45:31,827 DEBUG    MQTT       Publishing: emon/emontx3cm15/P2 0
2022-12-30 10:45:31,829 DEBUG    MQTT       Publishing: emon/emontx3cm15/P3 0
2022-12-30 10:45:31,830 DEBUG    MQTT       Publishing: emon/emontx3cm15/P4 2
2022-12-30 10:45:31,831 DEBUG    MQTT       Publishing: emon/emontx3cm15/E1 0
2022-12-30 10:45:31,833 DEBUG    MQTT       Publishing: emon/emontx3cm15/E2 0
2022-12-30 10:45:31,834 DEBUG    MQTT       Publishing: emon/emontx3cm15/E3 0
2022-12-30 10:45:31,835 DEBUG    MQTT       Publishing: emon/emontx3cm15/E4 85346
2022-12-30 10:45:31,837 DEBUG    MQTT       Publishing: emon/emontx3cm15/T1 33.12
2022-12-30 10:45:31,838 DEBUG    MQTT       Publishing: emon/emontx3cm15/T2 35.62
2022-12-30 10:45:31,839 DEBUG    MQTT       Publishing: emon/emontx3cm15/T3 300
2022-12-30 10:45:31,840 DEBUG    MQTT       Publishing: emon/emontx3cm15/pulse 2884
2022-12-30 10:45:31,842 DEBUG    MQTT       Publishing: emon/emontx3cm15/rssi -63
2022-12-30 10:45:31,844 INFO     MQTT       Publishing 'node' formatted msg
2022-12-30 10:45:31,844 DEBUG    MQTT       Publishing: emonhub/rx/15/values 1144002,243.31,0,0,0,2,0,0,0,85346,33.12,35.62,300,2884,-63

2022-12-30 10:45:41,622 DEBUG    RFM2Pi     6128382 From Node : 15
2022-12-30 10:45:41,623 DEBUG    RFM2Pi     6128382    Values : [1144003, 243.4, 0, 0, 0, 2, 0, 0, 0, 85346, 33, 35.37, 300, 2884]
2022-12-30 10:45:41,623 DEBUG    RFM2Pi     6128382      RSSI : -63
2022-12-30 10:45:41,624 DEBUG    RFM2Pi     6128382 Sent to channel(start)' : ToEmonCMS
2022-12-30 10:45:41,625 DEBUG    RFM2Pi     6128382 Sent to channel(end)' : ToEmonCMS
2022-12-30 10:45:41,834 DEBUG    MQTT       Publishing: emon/emontx3cm15/MSG 1144003
2022-12-30 10:45:41,836 DEBUG    MQTT       Publishing: emon/emontx3cm15/Vrms 243.4
2022-12-30 10:45:41,837 DEBUG    MQTT       Publishing: emon/emontx3cm15/P1 0
2022-12-30 10:45:41,839 DEBUG    MQTT       Publishing: emon/emontx3cm15/P2 0
2022-12-30 10:45:41,840 DEBUG    MQTT       Publishing: emon/emontx3cm15/P3 0
2022-12-30 10:45:41,842 DEBUG    MQTT       Publishing: emon/emontx3cm15/P4 2
2022-12-30 10:45:41,844 DEBUG    MQTT       Publishing: emon/emontx3cm15/E1 0
2022-12-30 10:45:41,845 DEBUG    MQTT       Publishing: emon/emontx3cm15/E2 0
2022-12-30 10:45:41,847 DEBUG    MQTT       Publishing: emon/emontx3cm15/E3 0
2022-12-30 10:45:41,848 DEBUG    MQTT       Publishing: emon/emontx3cm15/E4 85346
2022-12-30 10:45:41,850 DEBUG    MQTT       Publishing: emon/emontx3cm15/T1 33
2022-12-30 10:45:41,852 DEBUG    MQTT       Publishing: emon/emontx3cm15/T2 35.37
2022-12-30 10:45:41,853 DEBUG    MQTT       Publishing: emon/emontx3cm15/T3 300
2022-12-30 10:45:41,855 DEBUG    MQTT       Publishing: emon/emontx3cm15/pulse 2884
2022-12-30 10:45:41,857 DEBUG    MQTT       Publishing: emon/emontx3cm15/rssi -63
2022-12-30 10:45:41,858 INFO     MQTT       Publishing 'node' formatted msg
2022-12-30 10:45:41,859 DEBUG    MQTT       Publishing: emonhub/rx/15/values 1144003,243.4,0,0,0,2,0,0,0,85346,33,35.37,300,2884,-63

2022-12-30 10:45:51,599 DEBUG    RFM2Pi     6128391 From Node : 15
2022-12-30 10:45:51,600 DEBUG    RFM2Pi     6128391    Values : [1144004, 243.51, 0, 0, 0, 2, 0, 0, 0, 85346, 32.87, 35.12, 300, 2884]
2022-12-30 10:45:51,600 DEBUG    RFM2Pi     6128391      RSSI : -62
2022-12-30 10:45:51,600 DEBUG    RFM2Pi     6128391 Sent to channel(start)' : ToEmonCMS
2022-12-30 10:45:51,600 DEBUG    RFM2Pi     6128391 Sent to channel(end)' : ToEmonCMS
2022-12-30 10:45:51,786 DEBUG    MQTT       Publishing: emon/emontx3cm15/MSG 1144004
2022-12-30 10:45:51,787 DEBUG    MQTT       Publishing: emon/emontx3cm15/Vrms 243.51
2022-12-30 10:45:51,788 DEBUG    MQTT       Publishing: emon/emontx3cm15/P1 0
2022-12-30 10:45:51,789 DEBUG    MQTT       Publishing: emon/emontx3cm15/P2 0
2022-12-30 10:45:51,789 DEBUG    MQTT       Publishing: emon/emontx3cm15/P3 0
2022-12-30 10:45:51,790 DEBUG    MQTT       Publishing: emon/emontx3cm15/P4 2
2022-12-30 10:45:51,791 DEBUG    MQTT       Publishing: emon/emontx3cm15/E1 0
2022-12-30 10:45:51,791 DEBUG    MQTT       Publishing: emon/emontx3cm15/E2 0
2022-12-30 10:45:51,792 DEBUG    MQTT       Publishing: emon/emontx3cm15/E3 0
2022-12-30 10:45:51,793 DEBUG    MQTT       Publishing: emon/emontx3cm15/E4 85346
2022-12-30 10:45:51,793 DEBUG    MQTT       Publishing: emon/emontx3cm15/T1 32.87
2022-12-30 10:45:51,794 DEBUG    MQTT       Publishing: emon/emontx3cm15/T2 35.12
2022-12-30 10:45:51,795 DEBUG    MQTT       Publishing: emon/emontx3cm15/T3 300
2022-12-30 10:45:51,796 DEBUG    MQTT       Publishing: emon/emontx3cm15/pulse 2884
2022-12-30 10:45:51,796 DEBUG    MQTT       Publishing: emon/emontx3cm15/rssi -62
2022-12-30 10:45:51,797 INFO     MQTT       Publishing 'node' formatted msg
2022-12-30 10:45:51,797 DEBUG    MQTT       Publishing: emonhub/rx/15/values 1144004,243.51,0,0,0,2,0,0,0,85346,32.87,35.12,300,2884,-62

2022-12-30 10:46:01,658 DEBUG    RFM2Pi     6128397 From Node : 15
2022-12-30 10:46:01,659 DEBUG    RFM2Pi     6128397    Values : [1144005, 243.48000000000002, 0, 0, 0, 2, 0, 0, 0, 85346, 32.87, 35, 300, 2884]
2022-12-30 10:46:01,660 DEBUG    RFM2Pi     6128397      RSSI : -63
2022-12-30 10:46:01,660 DEBUG    RFM2Pi     6128397 Sent to channel(start)' : ToEmonCMS
2022-12-30 10:46:01,661 DEBUG    RFM2Pi     6128397 Sent to channel(end)' : ToEmonCMS
2022-12-30 10:46:01,902 DEBUG    MQTT       Publishing: emon/emontx3cm15/MSG 1144005
2022-12-30 10:46:01,904 DEBUG    MQTT       Publishing: emon/emontx3cm15/Vrms 243.48000000000002
2022-12-30 10:46:01,905 DEBUG    MQTT       Publishing: emon/emontx3cm15/P1 0
2022-12-30 10:46:01,906 DEBUG    MQTT       Publishing: emon/emontx3cm15/P2 0
2022-12-30 10:46:01,908 DEBUG    MQTT       Publishing: emon/emontx3cm15/P3 0
2022-12-30 10:46:01,909 DEBUG    MQTT       Publishing: emon/emontx3cm15/P4 2
2022-12-30 10:46:01,910 DEBUG    MQTT       Publishing: emon/emontx3cm15/E1 0
2022-12-30 10:46:01,912 DEBUG    MQTT       Publishing: emon/emontx3cm15/E2 0
2022-12-30 10:46:01,913 DEBUG    MQTT       Publishing: emon/emontx3cm15/E3 0
2022-12-30 10:46:01,914 DEBUG    MQTT       Publishing: emon/emontx3cm15/E4 85346
2022-12-30 10:46:01,916 DEBUG    MQTT       Publishing: emon/emontx3cm15/T1 32.87
2022-12-30 10:46:01,917 DEBUG    MQTT       Publishing: emon/emontx3cm15/T2 35
2022-12-30 10:46:01,918 DEBUG    MQTT       Publishing: emon/emontx3cm15/T3 300
2022-12-30 10:46:01,920 DEBUG    MQTT       Publishing: emon/emontx3cm15/pulse 2884
2022-12-30 10:46:01,922 DEBUG    MQTT       Publishing: emon/emontx3cm15/rssi -63
2022-12-30 10:46:01,924 INFO     MQTT       Publishing 'node' formatted msg
2022-12-30 10:46:01,924 DEBUG    MQTT       Publishing: emonhub/rx/15/values 1144005,243.48000000000002,0,0,0,2,0,0,0,85346,32.87,35,300,2884,-63

any clues where else I can check to see where this value has come from. Am I looking at some imminent failure within the EmonPI hardware?

I think I’d invest in a new SD card, meanwhile back up your data to another drive.

That very thing has been on my mind, and I’ve been running a backup every day for the past week :slight_smile: Might just order a preinstalled sdcard from the online shop.

Buying a blank card locally and flashing it (Balena Etcher) would be quicker, if you can write SD cards on your computer. I don’t think The Shop will be there until Tuesday.

Just to note the shop uses high quality ‘industrial’ cards.

Touch wood, replacing the card appears to have stopped the spikes I was seeing across all the feeds.

Now was it the card, was it the reboot, or just switching it off and on that did it?

Anyway, the card that was replaced was originally an emonSD Industrial - Pre-loaded SD card bought from the online shop back in August 2021. I’m going to put the card through some tests to see if I can pick up any failures.

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Hi @Mike_Henderson,

I work for the Shop. If there is anything amiss with the ‘old’ card, please send me a PM or email the shop - [email protected] - and we will refund the cost of the additional card and shipping.

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