Assembly Solder Rev E
These are the board with mostly surface mount components, already soldered on. You have only to do a few through-hole components.
Be sure that all components are snug against the board when you are soldering them. I often tack one lead with tiny amount of solder and check that I've got a part snug before soldering fully.
The board has large ground areas, which makes soldering component leads that connect to ground a little more difficult. I add a tiny bit of extra flux and use a higher soldering iron temperature for these. They are called out in the images with red arrows.
| Qty | Device | Value | PCB Side | PCB Label |
|---|---|---|---|---|
| 2 | LED | red | top | LED symbol w/R |
| 2 | LED | green | top | LED symbol w/G |
| 1 | encoder | top | ||
| 1 | DC power jack | 5.5mm od, 2.1mm id | bottom | |
| 1 | display | Feather OLED board | top |
Solder them on in the order of the table will make it easiest.
Double check that you've go the LEDs inserted in the correct orientation: The flat edge should line up with the flat edge printed on the PCB. Once soldered, clip the leads short.
On the encoder, the two side tabs should hold it snug. If not, bend them out a tiny bit. I solder those tabs on the bottom to keep the encoder solid, but it is probably overkill!
The power connector goes on the bottom, soldered on the top. You can bend the tabs out a little ways to keep it in place as you solder.
You'll notice in the image of the bottom of the board that only 10 pins of the display are soldered. You can solder them all if you like, but the others are not connected to anything.