When I complete my rebuild I had no time to test all parts of it and I recently found out that my speaker is not working. I also could not find original schematic from which I copied part for speaker and I was unable to make it work in any way, so I decide to make new revision. 

This revision is completely same as first one, except buzzer instead of speaker and few diodes which were not needed. 

Here as small test of it (sorry for bad video quality): 

FW need a lot of work as for now, there is not much what it can do. 

As i have some spare boards, I will probably try to sell them on Tindie, so if anyone is interested look there or send me a message.  

Update 26/11/2019: 

- I uploaded files for part placement for this revision 

- I uploaded STL files for front cover & bottons 

Here are pictures of this board: 

I sold few of these boards and with help of Lukas Testo from Germany (I hope he don´t mind that I´m mentionign him) I realised that I have my cicruit for SSR wrong, at least wrong for SSR which need more than 3V to turn on. It is working for me with SSR in part list so I hope this is not such a big problem. 

If somebody, who bought my board, have problem with it and can not drive SSR, please contact me and we will sort it out.