Some users experience difficulties using one of the Over-the-air (OTA) methods for firmware upgrade. We propose a...
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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 order values up to 150 EUR ex VAT).
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Latest posts
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Updating device over USB cable, simplified methodRead more -
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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Correcting stored values by editing the configuration fileRead moreHow to correct corrupted values in the graphs
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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 savingRead moreIt took some efforts both in hardware and firmware to make an ESP32 run from HAN-port power only - and here are the...
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Can Pow-U read from a P1-port?
Pow-U can only read smart meters with a 12/24V M-bus signal on pins 1 and 2 of an RJ45 connector. This is the standard implemented in Norway, sometimes called a https://github.com/ArnieO/SmartMeterDocumentation.
Several European countries have selected a newer standard, with a so called HAN/P1 port. This port uses an RJ12 connector. Pow-U cannot read this port.
In Sweden, both versions are used.
I am in Sweden. How dp I know which port I have on my meter?
If an ethernet cable (which has 8 contacts) fits in the connector on your port, you have a HAN/NVE port - and you can use Pow-U.
If not, you have a HAN/P1 port - and will have to wait for our Pow-P1 reader (coming during 2022!).
Here are the two connector types:
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FAQ
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