blink

blink1-tool [options]

blink1-tool is the command-line interface for controlling blink(1) USB RGB LED indicator lights made by ThingM. It can set colors, create blink patterns, fade between colors, and manage stored light patterns on the device.
The blink(1) device is a small USB dongle containing a programmable RGB LED. It is commonly used for build status indicators, notification lights, ambient information displays, and visual alerts triggered by scripts or monitoring systems.
The tool communicates directly with the blink(1) hardware over USB HID, requiring no special drivers. Multiple devices can be addressed independently.

--rgb RRGGBB

Set color by hex RGB value.

Set LED to red.

Set LED to green.

Set LED to blue.

Turn off the LED.

Blink the LED N times.

Fade to color over MILLIS milliseconds.

Play stored pattern N.

List connected blink(1) devices.

Save RGB color to position in pattern.

Save the current pattern to the device.

Select which LED to address (0=all, 1=top, 2=bottom) on blink(1) mk2+.

Suppress output.

Requires a physical blink(1) USB device to be connected. On Linux, udev rules may need to be configured for non-root access. The mk1 hardware supports only a single LED, while mk2 and later support two independently addressable LEDs.

The blink(1) was created by Tod Kurt of ThingM and successfully funded on Kickstarter in 2012. The blink1-tool command-line utility is part of the open-source blink1 software suite hosted on GitHub, supporting Linux, macOS, and Windows.

usbreset(1), lsusb(8)