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BDN9 Rev. 2

Videos of Builds​

Parts List​

Here's a list of parts needed for the build:

Build Steps​

Here's a summary of the build steps:

  1. Prepare components
  2. Solder rotary encoders
  3. Solder switches
  4. Assemble case

Prepare components​

BDN9 Rev. 2 kit parts laid out

Parts from the kit.

If you have acrylic plates and/or middle layers, peel off the protective backing from both sides.

Acrylic plate with backing being peeled

FR4 switch plate with backing being peeled

Bottom plate with backing being peeled

Solder Rotary Encoders​

Rotary encoders must be soldered on before switches are added

It is difficult to put in the rotary encoders into the PCB pads if the switch plate and switches are already on, so make sure you add the encoders first.

Three rotary encoders soldered to PCB

Insert the rotary encoders from the top-side of the PCB.

PCB top side showing encoder pins

Solder the rotary encoders in.

If using Choc low-profile switches, double check/add Kapton tape to solder/metal connections on top of the PCB

When using Choc low-profile switches, there is very little clearance between the switch plate and the top of the PCB. Any exposed metal/solder can cause a short if it touches the switch plate, so before you add the switches to the plate and solder them to the PCB, it's advised that you double check that all solder joints on the top of the PCB are cut flush. Alternatively, you can add Kapton tape to any that are raised. It doesn't hurt to add Kapton tape to the encoder legs as well.

Solder Switches​

First, make sure that the plate is oriented correctly.

For FR4 plates, the rectangular cutouts should have the wider portion oriented horizontally.

FR4 switch plate correct orientation

For acrylic plates, the 6 square cutouts should be oriented so they are for the middle and bottom row, while the larger holes are for the encoders. The wider part of these larger holes should be oriented vertically.

Acrylic switch plate correct orientation

Once you've figured out the correct orientation, add the switches to the switch plate.

Switches partially inserted in FR4 plate

Switches and encoders in FR4 plate

Then, place it on top of the PCB.

Side view of switches seated in PCB

Make sure all the switches are seated firmly into the PCB.

Solder the switches onto the PCB.

Assemble Case​

Standoffs attached to switch plate

Screw in the standoffs to the switch plate at all four corners.

Side view of standoffs attached

Bottom acrylic layer added to standoffs

Add the bottom plate and screw it in.

Bottom plate added to standoffs

Completed BDN9 with keycaps and knobs

Plug it in and test. For the RGB underglow, the mode is controlled by the right-most key in the middle row. If the RGB LEDs don't light up, check your wiring or make sure the pads have enough solder.