Abstract: Provided in this disclosure is a self-tightening nut and bolt system. The nut and bolt system can be configured to provide a consistent level of tightness and torque to reliably attach two mechanical components together. The nut comes with a microcontroller, and a motorized thread, where the microcontroller controls the tightness of the nut. The microcontroller allows the nut's tightness to be monitored, and controlled over time. This prevents the nut from becoming loose, and allows certain levels of tightness to be controlled over time.

Abstract: In some implementations, a shoe includes a sole, a plurality of air chambers, an air pump, and one or more processors. The sole may encloses the plurality of chambers configured to expand and contract based on air pressure, and portions of the sole define air channels. The first end of each of the plurality of air channels is connected to a respective one of the plurality of chambers. The air pump connects to a second end of each of the plurality of air channels and is configured to pump air through the plurality of chambers. The one or more processors communicably couple to the air pump and are configured to, in response to an event, transmit a signal to the air pump to pump air through the plurality of air channels.

Abstract: A multi-function binding system configured for use on a sliding board comprising: (a) a binding operable with a boot assembly, the binding comprising a support surface and toe and heel pieces extending therefrom; (b) a base assembly configured to be rotatably and removably secured to a deck of a sliding board and to releasably couple the binding during use of the sliding board, the base assembly comprising: (i) a support disc configured to be removably coupled to the deck of the sliding board and to secure the base assembly to the sliding board; (ii) a deck plate rotatable about the support disc and configured to be positioned adjacent the deck; (iii) a bonnet also rotatable about the support disc and configured to receive and engage the binding, the bonnet operable with the deck plate to support one or more components of the base assembly; (iv) adjustment means for facilitating the rotational adjustment of the bonnet and the deck plate about the support disc and with respect to the sliding board, thereby fac