Any update on releasing the files?
Yes, i acually tested it a while ago, seems to work fine with both softwares...
But there was some small bugs / fixes i have made to the board - and i haven't tried the last revision - because i haven't even ordered the PCB's for it (my board works as fine, just some silkscreen and stuff missing - and a added connector and so on).
So, here you go, the download is here:
https://drive.google.com/file/d/0B_QoTJWXUR4IdVNCVmxRWVRkTVk/view?usp=sharing
If there is anything you don't understand about the board just ask.
If feeding the board straight on with 5v - then jumper the input diode (D4) with a wire (or increase voltage to above 5.7v if possible) and also jumper the reg-bypass with a wire.
If feeding the regulator with ~9v or above, then use both diode and a 5v regulator. But to much voltage may overheat the regulator. I have tested with 12v with no trouble.
Also the IC-chip (IC1) should be PCF8574 (not PCF8574A) if you want to use the board with "default" settings for display and such. The IC3 doesn't matter, since the board scans for that chips adress.
Also, the pads by the Buzzer - these are for choosing 12v(input voltage really) or 5v (if using regulator) for the possibility of powering different buzzer-types.
LCD is piggyback standard 20x4 LCD, but there is also connector added for wiring an offboard LCD.. if offboard lcd is used, then one can skip adding Q5, IC3 and TR1.
Hope you'll like it. And do get back if you build it, so that i know everything work as expected with the PCB-design.