How to correct corrupted values in the graphs
Vi sender for tiden minst to ganger per uke. Bestillinger som ankommer i helga postlegges mandag morgen. Du vil motta epost-bekreftelse når bestilling er registrert, og ny epost med betalingsoppfordring når varen er klar til forsendelse.
Non-Norwegian customers are invited to order from our store on Lectronz.com, a third party sales platform that handles national VAT to DU countries, using the EU IOSS system (for order values up to 150 EUR ex VAT).
Click the button: 
Latest posts
-
Correcting stored values by editing the configuration fileRead more -
I have a Kaifa/Nuri meter, and my new Pow-U does not work!?Read moreOK... so we made a (minor) bummer on the latest design update of Pow-U. The fix is maybe not elegant, but it is easy!
-
"I ordered a device on Lectronz, and paid VAT. But now I received a customs + VAT claim!?"Read moreSome of our EU customers that buy on Lectronz receive customs claims. Here is why - and what to do....
-
Pow-U and power savingRead moreIt took some efforts both in hardware and firmware to make an ESP32 run from HAN-port power only - and here are the...
-
-
Integration with LoxoneRead moreLoxone is a Smartbuilding system used by professional installers, and eReitan Consulting has made available an...
-
Denmark / encryption keysRead moreHAN ports in Denmark are encrypted. How do you obtain the encryption keys?
-
-
Vattenfall - opening the HAN portRead moreAndreas in Sweden informed us on 26th Sep -22 that Vattenfall currently has a long backlog in handling incoming emails.
-
Blog categories
Search in blog
Pow-U and power saving
We wanted to avoid the hassle of an external power supply, which is why the Pow-U is designed to run from the power that can be tapped from the HAN-signal line. To achieve this with an ESP32 microcontroller module, special measures are taken both in hardware and firmware.
But the Wifi environment where the unit is connected sometimes creates additional challenges - which is why an adjustment of the firmware power saving mode is implemented in the firmware, starting from v2.1.12.
In menu Configuration -> Wifi you will find:
Recommended setting:
- Pow-P1: Off
- Pow-K+: Minimum
- Pow-U: This is the tricky one!
Try first with "Minimum". If the device looses voltage, provoking regular reboots: Change it to "Maximum".
The disadvantage with running on "Maximum" is that the user interface will tend to be a bit less responsive. Transmission to MQTT will probably not be impacted, only user interface responsiveness.
Note:
The Power saving function does not work on ESP8266, so will have no effect on "old" Pow-U units with that micro controller.
Related posts
-
Home Assistant med Pow-K
Den danske YouTube-kanalen Kenneths Teknik har laget en instruktiv video som viser hvor lett det er å koble Pow-K (og...Read more -
Issues with Pow-k+ 3D printed holder
We have shipped some 3D printed holders with an error!Read more -
How can I read data from my Pow-K / Pow-U when I'm not at home?
Many of us do not like the idea of sending our power consumption data to some cloud service where we do not really...Read more -
Where are our customers located?
This map shows the postal code position for amsleser.no registered customers.Read more -
Workaround for bug in firmware v2.1.2
There seems to be a bug in the currency conversion giving a factor 100 incorrect energy prices for users in Denmark...Read more
Leave a comment