This is the meta-owswaas Yocto layer, which implements Owen Wilson Saying "Wow" as a Service (OWSWaaS) on this hot mess:

You can see a video of it in action here.

If you haven't used Yocto before, you can find a quick intro here: https://github.com/jynik/ready-set-yocto

This layer depends on:

URI: git://git.yoctoproject.org/poky.git layers: meta, meta-poky branch: zeus

URI: https://github.com/agherzan/meta-raspberrypi.git layers: meta-raspberrypi branch: zeus

URL: git://git.openembedded.org/meta-openembedded layers: meta-oe, meta-multimedia, meta-networking, meta-python, meta-filesystems branch: zeus

This layer currently targets the Raspberry Pi Zero (W), but can easily be adapted to other platforms by defining variable overrides for the following in your local.conf.

Sysfs GPIO pin assigments

• GPIO_BTN = "24" - Push button
• GPIO_SW = "23" - SP/ST rotary switch
• GPIO_LED = "18" - LED control (intentionally on RPi PWM pin, though not used as such)

Default ALSA sound card selection, by index:

DEFAULT_ALSA_CARD = "0"

This is a fairly simple setup, and makes for a fun beginner/intermediate hobbyist electronics project. Information about the hardware components can be found here:

• Pictures
• Schematic
• Bill of Materials

Please submit patches as pull requests on Github at: https://github.com/jynik/meta-owswaas/pulls