Code is AS-IS without any warranty of any kind...
Primarily created for the french Gas Smartmeter 'Gazpar' but can be used for any meter based on pulses (via a dry contact output) like "dumb" gas meters, water meters, etc...
More info on the blog:
- BAT48 Schottky diode
- BAT54C Schottky diodes
- 100nF capacitor
- CR2032 Battery Cell
Beware, this PCB was designed for fun. It hasn't been tested at all!