ATREUS


Build Log: Atreus Deck Mark III

previously

2019-08-03

Started building the Mark III. There are three distinct pieces; the two keyboard halves (which are oriented in a vertical position, and the middle panel which contains the motherboard and display.

a few switches in one half

a few switches in one half

The split keyboard necessitates cutting the PCB in half; I used a hacksaw for this. I'm using Matias Quiet Click switches with blank PBT keycaps.

various pieces in disarray

various pieces in disarray

I ordered a Pine64 and a special 7-inch high-res Pine64 display which connects over a DSI connector rather than HDMI. A pair of cabinet hinges with M4 screws connect the sides to the center panel.

all put together

all put together

2019-08-04

The Pine64 display I got was dead on arrival and not salvageable; ditched it to use the 5-inch HDMI Elecrow I had on hand from the Mk I. The Pine64 itself was also proving to be a bit challenging to mount in this configuration, so I swapped it out for a Pi Zero W. The annoying thing about the Pi is that they all use M2.5 screws, so I don't have any good way to mount it.

screen with pi zero

screen with pi zero

The Pi Zero W is just about the only Pi that can run off the Adafruit Powerboost circuit I have; it can put out an amp from a lipoly and also supports passthru charging, which is somewhat hard to come by. But I'm not sure it can run the Pi and the screen at once. Also, the HDMI cable is short, but very thick and awkward. I haven't gotten the keyboard wired yet.

2019-08-06

controller wired in

controller wired in

Wired the keyboard matrix on both halves with the controller tucked away on the left. The device is now functional as long as you have an external source of power.

keyboard wires on second half

keyboard wires on second half

worn with strap

worn with strap

However, the attachment of the strap is very awkward; there doesn't seem to be a way to get it to hang in a usable position. Balance is precarious. The screen is adequate but the picture is not very sharp.

booting raspbian; front view

booting raspbian; front view

To be continued...