Linux 5.14 To Add Driver For A $10 Open-Source Joystick For DIY Electronics Projects
Written by Michael Larabel in Hardware on 21 June 2021 at 08:10 AM EDT. 1 Comment
HARDWARE --
Linux 5.14 is bringing a new input driver to support an open-source joystick that can be used for DIY electronics purposes and other use-cases. The schematics and firmware are open-source for building the joystick device yourself or can be purchased for about $10 USD.

This new driver on the way to mainline is the qwiic-joystick driver that has been queued in the input subsystem's "-next" branch ahead of the Linux 5.14 merge window. This driver is for the SparkFun Qwiic Joystick, which is an open-source mini analog joystick built around a microcontroller and two potentiometers connected with a gimbal mechanism. Input events are in turn polled over the I2C bus.

The SparkFun Qwiic Joystick is open-source with both the hardware design files being open-source as well as the firmware. The joystick is somewhat similar to the thumbstick found on the old Sony PlayStation 2 controllers. The hardware design files and firmware sources are available via this GitHub repository.


This new input joystick driver can be found with the input-next tree until the Linux 5.14 merge window gets underway in a week or two. This 150 lines of code driver has been tested with the Raspberry Pi 4 and other hardware.

More details on this budget, DIY-friendly joystick via SparkFun.com.
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Michael Larabel is the principal author of Phoronix.com and founded the site in 2004 with a focus on enriching the Linux hardware experience. Michael has written more than 20,000 articles covering the state of Linux hardware support, Linux performance, graphics drivers, and other topics. Michael is also the lead developer of the Phoronix Test Suite, Phoromatic, and OpenBenchmarking.org automated benchmarking software. He can be followed via Twitter or contacted via MichaelLarabel.com.

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