What is a DIN Rail Proto Board?
This is a board with multiple 35mm DIN rails attached for easy prototyping and design.
I have oftain read about folks using DIN rails inside cabinets to mount their CNC electronics. The problem I found was getting things laid out efficiently.
For this reason I designed the "DIN Rail Proto Board".
Since it has four rails spaced 2" apart, I have a ton of space to figure out how to efficiently layout my electronics.
The main component on the proto board is the main board shown here.
It's a piece of 3/4" melamine coated particle board cut 24" x 14-3/4".
Four slots are cut into the board for routing wires. The two slots on the sides also serve as handles.
There are holes to mount the 35mm slotted din rail using 1/4" hardware.
I also make some shallow holes on each end to make the location for screws. These screws will be used to mount an angled piece of stock so that the board is angled.
You can get the drawing file here:
The legs are cut from a piece of 3/4" stock 14-1/2" x 4-1/2"
I recommend wood as particle board will split when you attach it to the main board.
I measure in on each corner 1/2" and mark. I then draw a line between the marks.
I then just cut on the line. This yields me two legs as shown here.
I recommend the following din rail:
Cut two pieces exactly in the center, using a reciprocating saw, hack saw or Jig Saw.
This will yield you four pieces 19-5/8" long. Make sure you taper the edges and remove any burrs.
The legs are attached by setting the main board on top of the legs.
Mate the cut portion of the leg against the bottom of the main board and center on the pilot marks. It will be a lot easier if you have a helper.
The front screw should only be about 1" - 1-1/4" long so that it does not go all the way through the leg. The remaining screws can be longer. I used 2" screws.
Attach Din Rail
Place the din rail over the holes and slip some 1/4-20 x 1-1/4" bolts through the holes as shown here.
The bolts can be longer but they need to be full thread or they wont fit through the slots in the din rail.
Add a 1/4" washer and nut to secure.
I started on the bottom rail and used a 2" spacer to get the distance between the rails perfect. This will help if I want to design a large din rail mount that spans two or more rails.
That's all there is to it. The DIN rail proto board is complete.
Proto Board in Action
This is my first DIN rail design using my proto board. It has gone through several revisions and with a little more experimenting, I should be able to get a much more compact design.