Upgrades for Ideaspec version (pcb and sch):
Added switches to m1, m2, and s1 on the main board to go to m4, m5, and s3 or any external lights.
Added I2C expander (add 4 I/O for controlling switches)
Added 3x2 male mini pins for external light connection on main and add-on board
Added 4 pin connector (ribbon) from main board for detector C
Updated resistor values to set measuring pulse pwm range (R131 - 1000, R132 - 56, R133 - 270, R134 - 3000)

Signed-off-by:  <Greg>