# Sharky 775 heat meter questions

**URL:** <https://community.openenergymonitor.org/t/sharky-775-heat-meter-questions/21591>\
**Category:** Hardware\
**Tags:** heat-pump\
**Created:** [16 October 2022 21:12 UTC](https://community.openenergymonitor.org/t/sharky-775-heat-meter-questions/21591 "2022-10-16T21:12:39Z")\
**Posts on this page:** 1\
**Showing post:** 34

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**Author:** ![glyn.hudson](https://community.openenergymonitor.org/user_avatar/community.openenergymonitor.org/glyn.hudson/32/35003_2.png) [@glyn.hudson](https://community.openenergymonitor.org/u/glyn.hudson)\
**Post date:** [8 January 2023 21:15 UTC](https://community.openenergymonitor.org/t/sharky-775-heat-meter-questions/21591/34 "2023-01-08T21:15:55Z")

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> [@Zarch](#):
>
> So definitely check the ID on your own unit before setting up.  
> It sounds like it could be anything out of the box!

Yes, I’ve also realised this. A fallback method if you don’t know the ID is to do a MBUS scan using libmbus

```auto
sudo apt-get install -y cmake
sudo git clone https://github.com/rscada/libmbus.git
cd libmbus
sudo ./build.sh
sudo make install
cd bin
sudo ln -s /usr/local/lib/libmbus.so.0 /usr/lib/libmbus.so.0
./mbus-serial-scan -d -b 2400 /dev/ttyUSB0

```

> [@dMb](#):
>
> On my Kamstrup heat meters, the default Meter-Bus IDs are the last 2 digits of the Serial Number

Yes, that’s true. We use this script which can be used to set the Kamstrup ID, default to 1

> <https://github.com/emoncms/usefulscripts/blob/master/mbus/mbus_set_address.py>

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