Here is my latest dot-matrix clock, now in a beautiful wooden housing. GPS was used as the synchronization source like the last time, but with this version, I focussed on maturing the project beyond prototype to a finished product. For this, I implemented interactive control by adding a rotary encoder for hour offset and display brightness adjustment. The clock will calculate local time(UTC offset) from GPS longitude, however, this needs to be manually adjustable for example for DST. Another upgrade is an auxiliary power source which will come in handy when moving the clock near to the window to synchronize it. For this, a rechargeable battery and a charging/discharging/voltage regulating module was included.
Components were mounted inside 3D printed inner structure, which in turn was enclosed in a wooden housing.
This video was made in a non-verbal fashion to stay focussed on presenting the making process instead of explaining all the tidbits. If you’re interested in technical details, please visit my previous videos. Source code is linked below as well.