A Cosmos
Project
Wiring, Upgraded
Column-flex PCB with Hotswap and RGB support. Wire in minutes, not hours.

The Pumpkin Patch PCB is an easy way to wire switches to your keyboard's brains.

Ready to Go

and sets up in minutes

Cut to Size

to fit big and small keyboards

Sick Colors

for fans of Halloween

Cosmos logo
+
Pumpkin logo
+
Lemon logo
=
 So easy you won't be able to stop

Making your own keyboard(s) with Cosmos is a wonderful way to make your own improvements to a gadget you use every day, without needing to first master product design, CAD, or ergonomics. Instead, you acquire these skills along the way, diving as deep (or as shallow) as you like.

Likewise, you shouldn't need to be a skilled electrical engineer or computer scientist to add electronics to your keyboard and program it. You may do a little soldering and familarize yourself with the firmware as you tweak it, but Cosmos has developed the Pumpkin Patch PCBs and Lemon Microcontrollers to ensure that–even if you blunder, even if your hands shake when soldering–you're not far away from being able to type on your new keyboard.

Soldering and programming keyboards can be notoriously opaque; sometimes things fail to work with no clear culprit. The Pumpkin PCBs give you a grid of hotswap sockets and LEDs already connected together and assured to work, while the Lemon Microcontrollers are the only hardware for which Cosmos can autogenerate firmware. Altogether, irregardless of your background, you have the power to shape your keyboard to your desires.

Ready to learn how it works?

Read Wiring Guide