I've just finish the new version of VFD controller PCB, which change the controller from MAX6921 to HV5812,

also because size limit, I remove the RTC IC.

HV5812 biggest problem is that the smallest package is SOIC , couple times bigger then MAX6921's SSOP,

almost cover half of the board.

Also, I've trying to make use of the Wifi module, currently the clock's setting is control from IOT service,

and the clock can upload light data to cloud (add a humidity,temperature sensor and you have a wifi sensor node)

I'm using Mediatek cloud sandbox here,

using string data,I can set alarm from cloud (Still have to press the button to stop alarm though)

and see the history light data.

And finally,

More tubes!