About two years ago I decided to make something based on LED matrices. A bit later I bought a pretty cheap GPS module. That was the start of the GPS wall clock development. This clock does not have any buttons and does not require any settings. Time zone and automatic DST correction are should be defined just once, before the flashing. After that you just power it on and it works. In addition to the time you can see current temperature, humidity and pressure diagram. Display brightness automatically adjusts according to the information from the light sensor.

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