Design C
44mm * 78mm * 1.6mm
The diameter of all the plated holes is 1mm.
Pitch is 2.54mm.
There are 4x 2mm mounting holes.
Board material is FR4.
Similar to design A, smaller board with 5 less columns.
There are 3 power rails, they are all connected.
There are a total of 4, 4x2 jumper connections.
Design D
47mm * 174mm * 1.6mm
The diameter of all the plated holes is 1mm.
Pitch is 2.54mm.
There are 4x 2mm mounting holes.
Board material is FR4.
There are 5 power rails, they are separate but can be connected via jumpers on either side. The top and bottom power rails are split in the middle like the breadboard.
There is extra space between the outer power rails, similar to a full size breadboard.
There are a total of 2, 4x2 jumper connections.
Black