This arduino code can be used to keep a simplex hourly corrected clock on time. It will connect to Wifi, sync it's time with NTP and pulse the relay for 8 and 14 seconds to sync a Simplex "slave" ...

This might be a bit of a challenge for us to do but it might be possible to fully recreate one of those older Simplex clocks seen in lots of older schools. It'll be soley based on Minecraft time with ...