Close

Receiver Assembly!

A project log for Dichotomy - Keyboard and Mouse

The keyboard. The mouse. Tragically separated since birth. Finally rejoined in "Dichotomy."

joshua-broekhuijsenJoshua Broekhuijsen 12/11/2018 at 05:180 Comments

I'm shipping out the GB kits, and I thought I should PROBABLY upload the instructions for assembly.  I've got a video (currently rendering) for the board, but the receiver was simple enough that I decided to do it with pictures.

Note: The receiver PCB pictured is an older version, but it's VERY similar to the one I shipped.  The main differences are: (1) on the 8-pin package (the very first thing soldered), the pictured version has a single dot to indicate orientation.  The new version of the board, which shipped, has a line across the top (like the IC does).  (2) The LED orientation was slightly wrong (I was using an old footprint on this one).  For the PCBs that were shipped, there is a small triangle on the silkscreen of the PCB by the LED footprint.  Align that triangle with the triangle mark on the top of the LED.

Let's go!

This first picture is the bare receiver board.  Please note the changes between the version pictured and the version that actually shipped.  We'll be soldering on the 8-pin package near the center-ish of the board.  It's got a white stripe along the top that will help you identify how to orient it (hint: match it with the white line on your PCB).

There we go, all soldered.  Try not to clog the capacitor holes (you can see I ignore my own advice if you look at the hole to the bottom-right of the IC we just soldered).  Next, we'll be soldering on the LED.  Again, my board (the one in the picture) and the boards I shipped have slight differences.  The board YOU have should have a small triangle in one corner of the LED footprint.  Align the triangle on your LED with the triangle on the board.  Don't do what I did.

Great!  Assuming you did it right.  If you didn't do it right, not great.  Next we'll get on the linear regulator - there's only one place/orientation it could possibly go:

Now we'll get on the resistors and capacitors.  Another deviation (WHY AM I EVEN POSTING THESE INSTRUCTIONS?) from the picture to your board: I put my resistors (the three that are right next to each other) in the "wrong" places.  The brown-green-black-black should go in the MIDDLE of the three, and should be flanked by brown-black-black-blacks.  The brown-black-black-red is the 10k, and should go by the 8-pin IC we soldered earlier.  Neither the resistors nor the capacitors are directional, so you can flip them around however you want.

Perfect.  Now the 4-pin header:

Aaaand the two 18-pin headers for the NRF:

The two 12-pin headers for the Pro Micro:

And the tactile switch:

If your pro micro isn't already inserted, I recommend inserting it into the headers to solder it, to ensure it's got the right alignment.

Insert everything, and you're all done!

Yay, being all done.  Video for the board assembly coming soon!

Discussions