Infinity 87.5 FR4

Hybrid TKL 87 & 88 Solder PCB

Stock

Layout

TKL

Switch

Revision

2.2

Released

2025

Open in Mechlovin' PCB Configurator Build guide

Specifications

Firmware

QMK

Connector

Onboard USB-C, Mini-USB or JST

MCU

ARM STM32

RGB

Underglow

Thickness

1.6mm

Material

FR4

Solder Mask Colour

White

DB Standard

JST-SH or JST-SUR

Supported layouts

Downloads

QMK Firmware

Rev. 1 with Atmega32U4 MCU

View on GitHub ↗

QMK Firmware & JSON VIA

Rev. 2 with ARM STM32 MCU

View on GitHub ↗

3D Model

STEP file for case design

View on GitHub ↗

Compatibility notes

Check what fits your keyboard

Case fitment

This PCB is designed to fit a large variety of TKL boards in both 87 & 88 layouts.

Revision changelog

Rev. 1

2022

Original version with Atmega32U4 MCU

Rev. 2

2023

Changed platform to ARM STM32 MCU

Rev. 2.1

2024

Minor fixes and improvements

CHG Rearranged underglow LEDs position to improve diffusion
ADD Add a resistor for PD Type-C cable support

Rev. 2.2

2025

current

Minor fixes and improvements

ADD Add JST-SUR low profile connector footprint

Where to buy

Vendor	Region	Stock	Price	Shipping
Mechlovin' Store	Global	In stock	$50	Worldwide	Visit ↗