Skip to product information
1 of 2

Contra 40% Keyboard Kit

Contra 40% Keyboard Kit

Regular price $24.00 CAD
Regular price $0.00 CAD Sale price $24.00 CAD
Sale Sold out
Taxes included. Shipping calculated at checkout.
×
The Contra is a 40% ortholinear keyboard in either a 48 keys grid or 47 keys with a 2 key-wide spacebar supported by a Cherry style 2u PCB mount stabilizer.

Precompiled firmware can be found here.

Kit Includes
1 x FR4 Switch Plate
1 x Contra PCB
1 x Acrylic Bottom Plate
1 x 6x6 Tactile Switch
5 x 9mm Brass Standoffs
5 x 4mm Screws
5 x 6mm Screws
48 x Diodes (Through Hole)
4 x Rubber Feet

Required to Complete
1 x Pro Micro Controller (Comes with Headers to Direct Attach)
47-48 x MX Switches (47 if you want a 2U spacebar)
47-48 x MX Keycaps (47x 1u Key Caps, 1 x 2u Key Cap for Spacebar) or 48 x 1u Key Caps
1 x 2u PCB Mount Stabilizer (for the Spacebar)

Optional Items
1 x EZ-Solder Header (Enable Controller Hot Swap)

Build Instructions
Contra Build Guide

This keyboard is designed by AI03.
View full details

Customer Reviews

Based on 3 reviews
100%
(3)
0%
(0)
0%
(0)
0%
(0)
0%
(0)
S
Samuel Gardiner

Fantastic value and easy assembly. Just be aware: if you're using the Helios RP2040 microcontroller, check the pinout carefully before soldering. It has more pins than a Pro Micro so it is possible to misalign against the board headers if you're not paying attention!

A
Austin
Perfect size

I was little concerned ordering from this site seeing how there isn't many reviews. Throughout the site. However, came completely as advertised. They even shipped it out of the facility within the same day I ordered my kit. Very impressed by that. It does sit high and very flat when using the base board. Would recommend arm rest. I 3D printed a bottom plate to put mine on an angle and lower to the table.

L
L.M.
Great kit for the price

Very minimalist kit which was easy to put together and inexpensive. Perfect for an electronics enthusiast who wants to try 40% without spending too much. The final height is a little high so I would recommend a wrist rest.