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Grid companies in Sweden has increased the number of decimals on energy (kWh), here is how to update your device.
Shipping to Norwegian customers: Order date or next working day.
Shipping to outside Norway: At minimum once per week.
Non-Norwegian customers are invited to order from our store on Lectronz.com, a third party sales platform that handles national VAT to EU countries, using the EU IOSS system for B2C (Business to Consumer) sales with order values up to 150 EUR ex VAT.
Click the button: 
Asiakkaat Suomessa voivat tilata Pow-P1 paikallisen jakelijamme verkkokaupasta Nurkan takaa (click here to redirect).
Latest posts
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Kamstrup Omnipower in Sweden: 10x kWh errorRead more -
Updating device over USB cable, simplified methodRead moreSome users experience difficulties using one of the Over-the-air (OTA) methods for firmware upgrade. We propose a...
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Kamstrup Omnipower HAN port not workingRead moreHow to cure the Kamstrup Omnipower meter hick-up (meter stops pushing data)
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Kamstrup Omnipower meters in Sweden: Which configuration should you choose?Read moreSwedish grid companies are moving from "HAN-NVE" configuration to "P1" configuration. Some grid companies allow their...
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L2 current not available!?Read moreSome users have noticed that the device is no longer reporting current on phase L2.
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Swedish customers and PostNord as "Tullombud"Read moreSwedish customers receiving our shipments via Postnord are mislead to think they have to pay customs fee and VAT....
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One-click upgrade is not workingRead moreOne-click firmware upgrade works just fine for most users - but what to do if it fails?
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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!
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"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....
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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 ESP8266 micro controller.
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