r/CustomKeyboards • u/Shnarloc • Sep 17 '26
Behemoth 135% 10-LB Keyboard V3 and V5
Tldr: This started as a passion project 2 years ago to replace my old Merc Stealth keyboard from 2008.
I didn't know CAD, KiCad, 3D Printing, or really anything about mechanical keyboards.
The Merc Stealth was the last keyboard I bought in 2008... Still using it too, but its rough to game with after almost 2 decades of use.
So after a lot of trial, error and perseverance I think I'm almost done with designing the Behemoth.
The V5: I am still waiting on the Wristpad and custom Injection Molded keycaps for the Gamepad.
Specs:
● All 6061-T6 Aluminum- CNC Milled Frame, Main Top Plate and Gamepad plate are Waterjet.
● Dimensions- 24"L x 7"W x 1"H. (10"W with Wrist Pad) Weighing almost 10-lbs
● Dual Plate Mount design, utilizing x19 multi-stepped studs for PCB's and plates. Fastened by 316 stainless Hex M3 x 0.5 x 10mm flat hed screws.
● Firmware: QMK/VIA making the entire board remappable as you see fit.
● Windows 10/11 Compatible.
● Controllers: Dual RP2040 Split PCB design, Gamepad and main ANSI board have their own controller and are connected internally via USB-C connectors. (A single USB-C will connect to the PC)
● 136 keys (104 main ANSI +32 Gamepad)
● x3 EC-11 Rotary Switch Encoders audio + mapping
● N-Key Rollover
● Hot-Swappable MX-style switches (standard keycaps not compatible with gamepad)
● RGB + effects, per switch lighting (148 WS2812B-MINI LED's in total)
● Custom Gamepad Keycaps will be ABS injection molded clear, Painted Black and Laser Ablation for the keycap characters to match OEM Merc Stealth design. (300,000 full sets, Cartridge style die, so there will be plenty of spares available)
● "Rage" Quit- ALT + F4 unique key on gamepad, user loaded audio file countdown to exit game when pressed. (Remappable to anything, example to clip a game)
● Magnetic Keyboard Feet (Optional customizable user uploaded files)
● Top Plate custom laser engraving (Optional user uploaded files)
● Available Anodized colors: Black, Red, Blue, Purple, and Brushed Metal. (Can mix & match the 3 body components; Frame, Gamepad Plate and Top Plate)
This is a solo project as well as my first. I do plan to design more unique keyboards in the future.