Just a quick update. Changing keypad, display, and future eeprom to I2C so I can keep total scan time to a minimum. Will be putting in the enclosure this weekend and getting it out side. Looking for power supply that accepts 110 - 270 so it can be plugged / wired into most systems. Got driver transistor done along with extending + 5 volts and I2C buss. Lots of fun! olf20 / Bob |