Custom Macropad

Squish Pad

A fully 3D-printable, true gasket-mounted 4x4 macropad engineered for a premium, ultra-smooth typing experience.

Features

16-Key Matrix + Rotary Encoder
Engineered Leaf-Spring Plate providing a bouncy, trampoline-like typing fee
Utilizes 3D-printed "slip-on" gasket socks to sandwich the plate tabs, completely isolating the plate and PCB from the outer case.
Acoustic PCB Cushion

Rendering

Schematic

PCB

BOM

1x unsoldered Seeed XIAO RP2040
16x through-hole 1N4148 Diodes
15x MX-Style switches
1x EC11 Rotary encoders
15x white blank DSA keycaps
16x SK6812 MINI-E LEDs
4x M3x16mm screws
4x M3x5mx4mm heatset inserts
1x Printed PCB
1x Case (All parts, guide below)

Printing Guide

If you dont have TPU: Print the gaskets with PLA/PETG and don't print the cushion. The macropad will still be slightly flexible

Note: For the TPU parts, setting Top and Bottom layers to 0 is critical, this exposes the Gyroid infill to create the "squish" effect.

Assembly guide

Ensure all 3D-printed parts are cleaned of support material before starting.

Bottom Case

Add Cushion (if using TPU)

Assemble PCB (might be easier to add keycaps in the next step)

Add Plate

Put assembly on top of cushion

Put Gaskets on all four sides of plate

Add top (put heat inserts in the 4 holes)

Use the screws to attach it together

Done!