Okay, I think I have a plan for the new hardware models. Everyone tell me if I'm nuts.
1. A single-door module with 1 reader input, 2-4 sensor inputs and 2 relay outputs, a usb serial port and rs485 serial, and an LCD connector for an optional 2x16 or whatever size LCD. This would be based on an Atmega328 chip.
2. A "master" panel board that controls multiple single-door units with RS485, an Arduino Mega/2560 on-board, 2-4 reader inputs, 8-16 alarm zones, an LCD and a slot to plug in a Raaspberry Pi for Internet servies.
What say the group?
John
Is the Pi most effective compared to the chipset from Arduino Ethernet? Just checking.