Pathfinder_Fidget_RGB_Macropad

A custom 4-key RGB fidget game / macropad /carrier board for seed studio XIAO Prices screenshot

docs

Parts: (all THT for easier assembly exept led)

• 4x Cherry MX style switches + keycaps(transparent for better effect)
• 4x SK6812MINI-E addressable RGB LEDs, one per each key
• Seeed Studio XIAO RP2040 microcontroller, mounted flat on the front of the board
• 2 layer PCB, 46mm x 63mm
• 2 JP pin header (optional for expanding the board)(2,5mm)
• 2 JP pin header (optiona for easier mounting the XIAO)(2,5mm)
• 4 ceramic condensator 100nF
• 5 resistors (1 × 330 Ω + 4 × 1 kΩ only if using mount holes as GPIO)
• 4x M4 screws (only if using mount hole as indeed)

PCB

The pbc was made in KiCad.

board: 46mm x 63mm

interactive HTML mount guide (made with a KiCad extension)

Schematic

PCB

Front copper and back copper in the editor (red is F.Cu, blue is B.Cu):

3D renders of the board:

Firmware

DOCS

BOM

CSV BOM with prices and links Prices screenshot

Quantity	Name	Component	Footprint	Notes
1	U1	Seeed Studio XIAO RP2040	Modulo XIAO RP2040, 14 pin, passo 2.54 mm	Microcontrolloer
2	J1a1, J1b1	Pin header male 1×7	2.54 mm, vertical, THT	Optional
4	SW1–SW4	Switch Cherry MX compatibile	PCB-mount, 5 pin, 1u	Switch
4	D1–D4	SK6812MINI-E	RGB addressable, reverse-mount, 3.2 × 2.8 mm	LED RGB
4	C1–C4	cermaic condesator 100 nF	THT, passo 2.50 mm, diametro 5 mm	Decopuling for led
4	R1–R4	1 kΩ resistor	7.62 mm	Only if using mount holes as GPIO
1	R5	Resistence 330 Ω	7.62 mm	In serie sulla linea DIN dei LED
4	H1–H4	screw M4	4.3 mm	Only if using mount holes as indeed

• USE SK6812MINI-E reverse-mount, NOT SK6812MINI

total price: with shipping and taxes:

AI usage

AI was never used for:

• schematic design
• PCB design

*instead, it was used a little for: *firmware and code

the drc rule HARDWARE/kicad/path_finder.kicad_dru

Extra stuff

easily soldable, perfect for beginners in soldering and coding

The contributors is both me

see docs