If you want to setup a chrony time server that maintains accuracy to within a microsecond and doesn’t do this with a network connection then you could try my sb

If you want to setup a chrony time server that maintains accuracy to within a microsecond and doesn’t do this with a network connection then you could try my sbts-aru project and just not use the audio recorder parts of it. https://github.com/hcfman/sbts-aru https://github.com/hcfman/sbts-aru It installs with a single command on all Raspberry Pi versions and takes care of all the dependencies, configuration and startup order details to install and start working with one command. It’s a sound localizing audio recorder platform and that’s why it also sets up accurate time. It’s using GPS to get its time from.