Kalkulators is a unique dual-function device that combines an 8-digit calculator with a fully programmable numpad/macropad. Whether you're crunching numbers or customizing your macros, Kalkulators is designed to fit seamlessly into your workflow.

Key Features

Dual Mode: Functions as a calculator or a QMK/VIA-compatible numpad/macropad when connected to a host computer.
8-Digit Display: Features a bright, dimmable blue 7-segment display.
Power Options: Runs on 1xAA battery for standalone use and USB-C when connected to a computer.
Customization: Supports MX switches and PCB-mount stabilizers, allowing you to use your favorite keycaps.
Compact Build: FR4 sandwich design with a laser-cut acrylic screen guard and M2 hardware.
Auto-Switching: Automatically toggles between calculator and numpad mode based on connection status.
Display Range: Handles numbers up to 99,999,999.

Specifications

Dimensions: 76mm x 204mm
Height: 30mm (bottom to acrylic screen guard)
Microcontroller: STM32
Connection: USB-C

Kit Contents

Each Kalkulators kit includes:

An assembled PCB (minus switches and stabilizers)
FR4 switch plate
FR4 backplate (embossed with mathematical designs on one side, plain black on the other)
Laser-cut acrylic screen guard
M2 assembly hardware

Note: You’ll need to supply your own switches, 3x2U PCB-mount stabilizers, keycaps, and an AA battery.

Pricing

The Kalkulators kit is estimated to cost €70 plus shipping.

Gallery

Check out the design and features in the image gallery to see Kalkulators in action.

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Kalkulators (IC)

Summary

Community Sentiment