There was quite a flurry of threads here regarding smartmeters recently, so people might be interested in my recent tinkering with them ...
Smartmeters
Jan 24, 2016
6 Replies
I'm looking forward to the next installments.
Nick
Me too
As someone who works on this sort of thing there is no way you ever encrypt stuff that is transmitted between components on the same board (or from mother to sister board). This just isn't a "normal" risk case.
tim
The data being snooped has been received from the electricity meter over
868MHz by the daughter board, I am working on the assumption that the daughter card just receives "packets" and slings them to the main board for processing. Out of the box there is a pairing process between meter and display, so it's possible that stores a key in the PIC's EEPROM.
Ah 868, I was wondering which of the many bands the RF chip could operate on was working. Thats within the coverage of DVB-T USB stick receiver, if we ever get a smart meter I might snoop the RF like I may do with the various 433 MHz stuff I have here.
You might find a USB TV receiver dongle useful for that, by using it as an SDR (software defined radio). Lookup SDRSharp.
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