http://www.picaxe.com/Hardware/Add-on-Modules/Budget-Serial-OLED-Module/ http://www.picaxe.com/Hardware/Add-on-Modules/Budget-Serial-... This is open firmware a

http://www.picaxe.com/Hardware/Add-on-Modules/Budget-Serial-OLED-Module/ http://www.picaxe.com/Hardware/Add-on-Modules/Budget-Serial-... This is open firmware and has IIRC four GPIOs free.