Secure PMSA

Use two M2.5x6mm screws to attach the PMSA to the frame.

NeoPixel JST

Solder a socket 3 Pin JST cable to easily connect the NeoPixel stick.

• 5v (Red) to 3v3
• G (Black) to GND
• DIN (White) to D13

Stemma cable

Attach a short STEMMA cable to the Feather.

Secure Feather

Use M2.5x6mm screws on the plated screws holes. Use M2x8mm long screws on the non plated screws holes.

Secure NeoPixel stick

Solder a short 3 Pin JST jack to the NeoPixel stick. 

• 5v (Red) to 3v3
• G (Black) to GND
• DIN (White) to D13

Use M2x6mm screws to secure the Stick to the frame.

Attach Sensor Bracket

Secure the sensor bracket to the PMSA with two M2.5x8mm screws.

Secure Sensor

Use M3x5mm screws to secure the SCD4x sensor to the bracket. Connect both sensor with an additional short STEMMA cables.

Place in Case

Insert the assembly into the case. The back cover aligns to the SCD4x sensor and press fits to the case.

Attach Screen frame

Press fit the screen frame over the display cutout.

Press fit Feet

The short feet press fits to the back of the case. The taller feet press fit to the front of the case.

Wrist Band

The wrist band is attached by sewing a .6" wide Elastic band to the band frame.