Unfortunately, I have had errors in the voltage measurement since version 02_03_12. It shows a mass of supposed voltage drops, which, however, are not visible in comparison systems.
The update to this version was done on 9.8.2018:
SD initialized.
8/09/18 13:48:51z Real Time Clock is running. Unix time 1533822531
8/09/18 13:48:51z Version 02_03_12
8/09/18 13:48:51z Updater: Installing update files for version 02_03_12
8/09/18 13:48:51z Updater: Installing GRAPH.JS
8/09/18 13:48:51z Updater: Installing INDEX.HTM
8/09/18 13:48:52z Updater: Installing TABLES.TXT
8/09/18 13:48:52z Updater: Installing CNFSTYLE.CSS
8/09/18 13:48:52z Updater: Installing EDIT.HTM
8/09/18 13:48:52z Updater: Installing GRAPH.HTM
8/09/18 13:48:53z Updater: Installation complete.
8/09/18 13:48:53z Reset reason: Software/System restart
8/09/18 13:48:53z Trace: 1:2, 1:2[4], 1:3, 1:4, 1:5[19], 1:6, 1:1[4], 9:0, 9:1, 8:4, 8:6, 8:8, 9:3, 9:4, 9:5, 9:9, 1:2, 1:2, 1:3, 1:4, 1:5[19], 1:6, 1:1, 9:0, 8:4, 8:6, 8:8, 1:2, 1:2[1], 1:3, 1:4, 1:5[5]
8/09/18 13:48:53z ESP8266 ChipID: 7283597
8/09/18 13:48:53z Local time zone: 0
8/09/18 13:48:53z device name: IotaWatt, version: 3
8/09/18 13:48:55z MDNS responder started
8/09/18 13:48:55z You can now connect to http://IotaWatt.local
8/09/18 13:48:55z HTTP server started
8/09/18 13:48:55z dataLog: service started.
8/09/18 13:48:56z dataLog: Last log entry 8/9/18 13:48:25
8/09/18 13:48:56z statService: started.
8/09/18 13:48:56z timeSync: service started.
8/09/18 13:48:56z WiFi connected. SSID: rexoweb, IP: 192.168.11.117
8/09/18 13:48:56z Updater: service started. Auto-update class is ALPHA
8/09/18 13:48:56z historyLog: service started.
8/09/18 13:48:56z historyLog: Last log entry 8/9/18 13:48:00
8/09/18 13:48:56z timeSync: adjusting RTC by -2
8/09/18 13:48:58z Updater: Auto-update is current for class ALPHA.
8/09/18 13:49:00z EmonService: started. url:my.rexometer.de:80,node:IotaWatt,interval:10, encrypted POST
8/09/18 13:49:01z EmonService: Start posting at 8/9/18 13:48:00
Exactly at this time (local time approx. 16:00 o’clock) the problems begin:
Furthermore, I have reboots due to low heap, I haven’t had that yet. Usually the heap was in the range of 25000, currently at about 12000 and no values are sent to emoncms. Update: As I write this another low heap message came up and there was a reboot and values are sent again.
SD initialized.
8/09/18 20:23:43z Real Time Clock is running. Unix time 1533846223
8/09/18 20:23:43z Power failure detected.
8/09/18 20:23:43z Version 02_03_12
8/09/18 20:23:43z Reset reason: External System
8/09/18 20:23:43z Trace: 99:0[233], 57:157[249], 92:46[203], 143:119[223], 235:173[198], 215:106[127], 158:3[236], 3:128[223], 202:116[250], 192:168[34], 249:73[162], 168:236[191], 199:251[2], 151:78[45], 251:88[30], 214:108[124], 229:43[4], 207:147[250], 237:202[150], 177:163[12], 100:217[86], 165:93[125], 237:123[50], 218:183[177], 31:162[147], 145:227[237], 222:33[38], 252:65[252], 243:144[59], 100:182[99], 169:191[169], 192:174[73]
8/09/18 20:23:43z ESP8266 ChipID: 7283597
8/09/18 20:23:43z Local time zone: 0
8/09/18 20:23:43z device name: IotaWatt, version: 3
8/09/18 20:23:46z Connecting with WiFiManager.
8/09/18 20:23:51z MDNS responder started
8/09/18 20:23:51z You can now connect to http://IotaWatt.local
8/09/18 20:23:51z HTTP server started
8/09/18 20:23:51z dataLog: service started.
8/09/18 20:23:51z dataLog: Last log entry 8/9/18 20:23:25
8/09/18 20:23:52z statService: started.
8/09/18 20:23:52z timeSync: service started.
8/09/18 20:23:52z WiFi connected. SSID: rexoweb, IP: 192.168.11.117
8/09/18 20:23:52z Updater: service started. Auto-update class is ALPHA
8/09/18 20:23:52z historyLog: service started.
8/09/18 20:23:52z historyLog: Last log entry 8/9/18 20:23:00
8/09/18 20:23:55z Updater: Auto-update is current for class ALPHA.
8/09/18 20:23:56z EmonService: started. url:my.rexometer.de:80,node:IotaWatt,interval:10, encrypted POST
8/09/18 20:23:57z EmonService: Start posting at 8/9/18 20:23:10
8/12/18 06:22:08z Heap memory has degraded below safe minimum, restarting.
** Restart **
SD initialized.
8/12/18 06:22:10z Real Time Clock is running. Unix time 1534054930
8/12/18 06:22:10z Version 02_03_12
8/12/18 06:22:10z Reset reason: Software/System restart
8/12/18 06:22:10z Trace: 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:4, 18:5, 1:6, 1:3, 1:4, 1:5[21]
8/12/18 06:22:10z ESP8266 ChipID: 7283597
8/12/18 06:22:10z Local time zone: 0
8/12/18 06:22:10z device name: IotaWatt, version: 3
8/12/18 06:22:11z MDNS responder started
8/12/18 06:22:11z You can now connect to http://IotaWatt.local
8/12/18 06:22:11z HTTP server started
8/12/18 06:22:11z dataLog: service started.
8/12/18 06:22:12z dataLog: Last log entry 8/12/18 06:22:05
8/12/18 06:22:12z statService: started.
8/12/18 06:22:12z timeSync: service started.
8/12/18 06:22:12z WiFi connected. SSID: rexoweb, IP: 192.168.11.117
8/12/18 06:22:12z Updater: service started. Auto-update class is ALPHA
8/12/18 06:22:12z historyLog: service started.
8/12/18 06:22:12z historyLog: Last log entry 8/12/18 06:22:00
8/12/18 06:22:14z Updater: Auto-update is current for class ALPHA.
8/12/18 06:22:16z EmonService: started. url:my.rexometer.de:80,node:IotaWatt,interval:10, encrypted POST
8/12/18 06:22:17z EmonService: Start posting at 8/12/18 06:21:40
8/12/18 20:03:50z Heap memory has degraded below safe minimum, restarting.
** Restart **
SD initialized.
8/12/18 20:03:52z Real Time Clock is running. Unix time 1534104232
8/12/18 20:03:52z Version 02_03_12
8/12/18 20:03:52z Reset reason: Software/System restart
8/12/18 20:03:52z Trace: 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:2, 18:3, 18:4, 18:5, 1:6, 1:3, 1:4, 1:5[21]
8/12/18 20:03:52z ESP8266 ChipID: 7283597
8/12/18 20:03:52z Local time zone: 0
8/12/18 20:03:52z device name: IotaWatt, version: 3
8/12/18 20:03:55z Connecting with WiFiManager.
8/12/18 20:04:00z MDNS responder started
8/12/18 20:04:00z You can now connect to http://IotaWatt.local
8/12/18 20:04:00z HTTP server started
8/12/18 20:04:00z dataLog: service started.
8/12/18 20:04:00z dataLog: Last log entry 8/12/18 20:03:45
8/12/18 20:04:01z statService: started.
8/12/18 20:04:01z timeSync: service started.
8/12/18 20:04:01z WiFi connected. SSID: rexoweb, IP: 192.168.11.117
8/12/18 20:04:01z Updater: service started. Auto-update class is ALPHA
8/12/18 20:04:01z historyLog: service started.
8/12/18 20:04:01z historyLog: Last log entry 8/12/18 20:03:00
8/12/18 20:04:03z Updater: Auto-update is current for class ALPHA.
8/12/18 20:04:05z EmonService: started. url:my.rexometer.de:80,node:IotaWatt,interval:10, encrypted POST
8/12/18 20:04:06z EmonService: Start posting at 8/12/18 18:59:20
Strangeness with voltage measurement and low heap seem to be connected:
The reboot was at 22:04 local time (20:04 UTC)