Discusses HID over I2C, an underappreciated HID standard used in laptops.
Explains that I2C-HID is used for touchpads, touchscreens, and sensor hubs.
Distinguishes I2C-HID from non-HID I2C devices and explains its benefits.
Describes the author's experience with using I2C-HID for a laptop touchpad project.
A USB key with a Trinket M0 heart and four RGB NeoPixels for customizable glow.