Delivering an IoT hardware product is expensive and risky. This talk is about how engineers can squeeze more learning from their first prototype to build a successful product.
Utilize Zephyr PWM capabilities to drive a simple piezoelectric speaker to play notes. Golioth did this on the Nordic Semiconductor Thingy91 and can play selected songs over a cellular connection.
Try out the Golioth platform without writing or compiling any code. The newly released Thingy91 binary showcases the entire platform and guides users on how to structure their programs for success.