* **pulseio** - contains classes that provide access to basic pulse IO (PWM)
* **pwmio** - contains classes that provide access to basic pulse IO (PWM)
* **rainbowio** - provides the colorwheel() function
+* **usb_hid** - act as a hid-device using usb_gadget kernel driver
For details, see the `Blinka API reference
<https://circuitpython.readthedocs.io/projects/blinka/en/latest/index.html>`_.