Power supply 3.3V
| I got sick of replacing batteries in my wireless home gate alarm bell. I can't see my gate from my house.
So I made up a small printed circuit board that gives 3.3v from a spare mobile phone power adapter. 21 July 2019.
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| I got sick of replacing batteries in my wireless home gate alarm bell. I can't see my gate from my house.
So I made up a small printed circuit board that gives 3.3v from a spare mobile phone power adapter. 21 July 2019.
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