We have the envelope from part 2. Now the commands that actually do something: DPI and lighting. The DPI one is easy. The color one taught me the most useful lesson in this whole p

I just like building things.
Now building -> https://mkrz.studio/en

Part 3 of a series on building a native Razer mouse controller for macOS.

DPI, Color, and Why "OK" Doesn't Mean It Worked

In part 1 we found the right HID interface and learned how to push a feature report at it. The report was just 90 zero bytes, which does nothing. This part is about what actually g

Part 2 of a series on building a native Razer mouse controller for macOS.


The Packet Format: 90 Bytes and One Cursed Byte


USB HID (Human Interface Device) is the protocol your mouse, keyboard, and gamepad use to talk to the OS. Most of the time it's invisible — the OS handles it and your app gets abst

Part 1 of a series on building a native Razer mouse controller for macOS.


USB HID on macOS: Talking to Devices with IOKit

The protocol works from a command line tool. Now I want it living in the menu bar: a little mouse icon, click it, set DPI and color, no Terminal. SwiftUI has MenuBarExtrafor exactl

Part 4 of a series on building a native Razer mouse controller for macOS.


Wrapping It in a Menu Bar App (and Three Things That Broke)

github

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Paul Contreras

I just like building things. Now building -> https://mkrz.studio/en