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Latest posts
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Updating device over USB cable, simplified methodRead more -
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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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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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Comments
POW-K+ modul
By: John sode skov On 21-May-2023Hi.
I have bought 2 moduls to use in denmark on Kamstrup meters. but can not get it to work. I have tried to set both of them up but still no HAN connection. I have got the encryption key from kamstrup. looking at the FRQ i got the impression that there was a selection of model in the setup, but never got that choose, only to setup the wifi and to auto update, nothing else.
in the FRQ you also talk about a manaul way but not where to do it, and i can not find the settings that are showed above. please advice?
Replied by: Egil Opsahl On 13-Jun-2023