Hello, I have recently been lent a MCF88-LW12TERWP to play with, hardware-wise its a nice device and I like the NFC config capability however I cannot work out how to decode the payloads… The “data sheet” from the manufacturers’ website is next to useless at describing anything other than the very…

Hi, Yep that seems to work fine, I am not a great JS guy so my conversion will probably be less elegant than others could achieve, I’ll probably shove my attempts on Github as it seems nobody else has a decoder for the TTN decoder yet. Best Regards, Rob

Hi, I made some progress on porting the Python stuff linked to JS so it can be used in TTN Payload Decoder however I can’t get the minutes working… Here is what I have so far - https://gist.github.com/robputt796/02e54443811f0f8a1e9ccdb7fa16d3a1 Here is an example input - 04 E4 A5 02 29 56 09 66 …

Alright, all fixed with help from @TonySmith Here is the decoder if anyone else has one of these… https://gist.github.com/robputt796/04f30942b1c596b0e32f3762f48eb45f

Just to be sure: did you see the remarks I left 5 days ago? You may not need support for negative temperatures, but I’m quite sure the bug with the date handling will bite you in 2021, if you rely on that. (Aside: in case you did not know, you can edit gists; no need to create a new one for fixes.) …

Hi @arjanvanb , Thank you very much for your contribution, I have now updated the decoder to include the correct year handling and also negative temperatures. Here is the latest for anyone who is also trying to decode this sensor. https://gist.github.com/robputt796/7115eb4f74fa2ab290e4ef996…

Thank you for this. I have similar MCF-LW12VOC sensor that is giving bit shorter output. Could this script be somehow customised for it? Example payload: 0C7373352AE5092E2389012C0027000674352ADD092E2189012A0023005A (should include date 21.1.2021) Thank you for your help! Best, Valtteri

[image] robputt796: The time is the first 4 bytes of each measurement and then the minutes is the last 3 bits of the 3rd byte and the first 3 bits of the 4th byte. This is a very unfortunate design - it’s quite pointlessly burning a lot of airtime sending information that might as well just b…

Hi have you tried this: GitHub - SensationalSystems/MCF88_LW12CO2_Decoder: Decoder for the MCF88 LW12CO2 LoRaWAN Indoor Environmental Sensor with VOC, LUX and CO2 Regards Alex

@cslorabox Yes, I can agree with this, you could just offset these date / times from the receive time meta data, normally with my own nodes I use the bare minimum data for the payload. I did a tear down of these and found under the hood its a BME280 sensor so this could be replicated fairly cheaply…

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MCF88-LW12TERWP Payload Decoder

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arjanvanb (Arjan) July 22, 2020, 10:04pm 2

Did you try the decoder from Mcf-lw12terwp?