I've been thinking about making RoboRally boards of my own and decided to look at the official boards to see what they had on the edges.
I have the 12 boards that come with RoboRally and Armed and Dangerous which makes 48 edges.
Each edge has 12 squares which I've numbered from top to bottom.
What I found was that the placement of walls along the outside of the board was pretty uniform, as well as conveyors moving onto and off of the board.
Incase you wonder what my labels refer to, I'll list them all:
| Blank - an empty factory floor|
| Down - a conveyor belt that slides down|
| Gear - a gear|
| In - a conveyor belt that slides into the board|
| Out - a conveyor belt that slides off of the board|
| Pit - a pit|
| Randomizer - a randomizer|
| Repair 1 - a single wrench repair depot|
| Repair 2 - a double wrench repair depot|
| Teleport - a teleporter|
| Up - a conveyor belt that slides up|
| Water - water (non-flowing)|
| Wall - a wall on the edge of the board (something might be behind the wall, but that's not what I'm looking at)||