IR_box

Normally open (HIGH) keychron low profile optical hitbox Keychron switches footprint from here

Part list

Component	Description	Number_used
R_IR	180 $\Omega$ 0805	16
R_PT	2k $\Omega$ 0603	16
Phototransistor	0805	16
IR_led	0805	16
Rp2040-zero	Waveshare	1
Pushbutton	6*6mm	4
Key switches	Keychron optical low profile	16
OLED display	0.96 inch I2C SSD1306	1
Keycap set	DOIO KCGM-02 KCGM-03	1

Schematics and Render

Half-vias used to use the extra pins in rp2040-zero