After building devices that can read his home’s electricity usage, [Dave] set out to build something that could measure the other energy source to his house: his gas line. Rather than tapping into the line and measuring the gas directly, his (much safer) method was to simply monitor the gas meter itself.
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![Gas Gas](https://en.joymeter.com/upload/big/Keypad_Prepaid_Gas_Meter_1_0_1528275194.jpg)
The other ways in which people have been stealing power are endless, from sand in the meters to slow down the wheel to turning the entire meter upside down. The trick is to know when the meter. Sep 01, 2009 Hack the Meter's Digital radio Godspeed says a similar technique to RAM-hacking can be used to get command of the smart meter's radio, and from there, launch attacks on the grid itself. Here's what the the article says: The smart meter's two-way radio chip allows the device to be read remotely and to receive commands over the network.
The major hurdle that [Dave] had to jump was dealing with an ancient meter with absolutely no modern electronics like some other meters have that make this job a little easier. The meter has “1985” stamped on it which might be the manufacturing date, but for this meter even assuming that it’s that new might be too generous. In any event, the only option was to build something that could physically watch the spinning dial. To accomplish this, [Dave] used the sensor from an optical mouse.
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![Prepaid Gas Meter Hack software, free download Prepaid Gas Meter Hack software, free download](/uploads/1/1/8/2/118299694/174191248.png)
The sensor is surrounded by LEDs which illuminate the dial. When the dial passes a certain point, the sensor alerts an Arduino that one revolution has occurred. Once the Arduino has this information, the rest is a piece of cake. [Dave] used KiCad to design the PCB and also had access to a laser cutter for the enclosure. It’s a great piece of modern technology that helps integrate old analog technology into the modern world. This wasn’t [Dave]’s first energy monitoring system either; be sure to check out his electricity meter that we featured a few years ago.