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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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My new Pow device is not working - what is wrong!?
(Illustration borrowed from https://thefreebundle.com/featured/don-t-panic-rediscovering-douglas-adams-hitchhiker-s-guide-to-the-galaxy/)
So... you have received your new Pow-device, connected it to your Wifi, configured the meter (Configuration/Meter), the main page is open but... there is no data from the meter and a red HAN indicator (and maybe others).
Let me quote classic litterature: Don't panic!
Hardware configuration
The most usual problem is that you selected the wrong hardware profile during the configuration.
The firmware used in the Pow-devices is designed to be used on "any" design based on an ESP8266 or ESP32 module. However, those modules have a number of input/output pins, of which we only use a few.
To simplify the setup, a number of pre-defined hardware profiles are defined, which you can select during initial configuration:
The newer Pow-devices are one of the two first on this list:
- Pow-K+ with ESP32
- Pow-U with the data signal tied to microcontroller input GPIO12.
There is text on the board indicating which GPIO it uses.
If you by a mistake have selected the wrong profile, the simplest way to recover is to reconfigure by setting the device in access point mode: Press and hold AP button until LED blinks yellow, then connect to Wifi access point AMS2MQTT and open 192.168.4.1 in your browser.
However, there is an alternative way:
You can change the settings in System/GPIO.
On this page you should not touch the "Multiplier" setting, as this is a calibration done before delivery of the ADC that reads the device voltage.
Newer devices should have the following settings:
Pow-U
Pow-K+
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