I got a bunch of cheap GPS modules from China and they seem to use a u-blox 8 chip. Because I don’t like the NMEA spam delivered every second by most of the gps modules, I had a look at the UBX protocol… nice! I decided to ignore the existing huge libraries and write a lightweight one just for the data I need for the nixie clocks. During initialization, the library stops the module from sending NMEA messages. You can then subscribe to ubx messages (status and utctime) and define the interval. Or you can just ask for one message when you need to sync your clock. If someone is interested, I attached the first attempt, still under construction. I’m developing using platformio and esp32 with Arduino framework. I’ve never had any coding class, so please don’t expect too much…
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<<attachment: ubGPSTime.zip>>
