Thanks for the link. However, my aims are specific to Prop control and those boards are a bit generic. My requirement was for a small simple board that was very adaptable. The attached pic is of the almost finished board.
Optional Offboard Power or onboard Power. Onboard is either a battery pack on a PP9 Connector or a CR2032 Button Cell.
Offboard Power In AND daisy chain Power Out. 2 Pin or Screw Terminal
Data connectors can be 3 pin Servo Compatible or Screw Terminal
The 18 Pin socket can be either straight linked for driving Solid Sate Relays, Have a Resistor Pack for driving servos or a ULN2803A for higher current drive requirement. The basic component count is very low.
Daisy Chain option for Sync signal to activate other VLCs
If I order 100 boards I can get them down to $4-$5 US for the bare board. Components excluding the Picaxe 08M would be about $2-$3
Overall, this controller should cost less than $15!