MrsCrossRoads was doing some work with Raspberry Pi’s recently, with no good way to connect to the headers on them. There are Pi shields out there, but they cover up the internal connecters, so she wanted a shield that left those accessible and only broke out the male pins, 13x2 on one board, and 20x2 on another.
I came up with this, with no real pin names as the signals have different names/functions between boards.
Left some terminals on the side to use as extra power & Gnd distribution points, but without being connected to any of the header pins.
Then it occurred to me this could be used with a Mega too, so I labelled the bottom so it could be plugged onto a Mega’s 18x2 header, with the extra 2x2 pins off to the right of the 5V/D20, D21 side of the board to not intefere with the Analog header.
Install a female long tail header and plug onto a Mega. Same connector with board flipped over and the female headers plug onto a Pi. Put on male headers and use a 2x20 ribbon cable and extend the header away from the Pi. Plug a male-male header into the Mega and do the same. Mount the screw terminals top or bottom as needed.
What do you think? Print these out & lay them back to back to see the effect.
RaspPiScrewShieldTop.pdf (30.8 KB)
RaspPiScrewShieldBottom.pdf (19 KB)