Looks like it has been a year or two now. Is it still going on the original battery?

Hi @tbowmo, do you mind to explain a bit about the design? I'm interested with your design. I will use these steps for removing voltage regulator, http://goo.gl/CsZaNg So the design will be battery > external step up regulator (http://goo.gl/PFt99R - to stabilize 3.3v) > vcc pin ? with these then I can use my first post design? Thanks

@dzairo there is a nice PinChangeInterrupt library that you may want to look at.

@sundberg84 I also on my last work removed the LG33, it's faster :-) Well this most likely have been provided as info, but else it's here: Remember to burn new OPTIBOOT 8MHz into the Arduino Pro Mini and then I also use avrdude with a usbtinyISP to set the fuse to not check battery voltage monitoring, this is done after I have flashed this with Arduino IDE avrdude -c usbtiny -p m328p -U efuse:w:0x07:m```