Communications Maxim's MAX7221 LED Driver chips communicate with the host computer via the SPI (Synchronous Peripheral Interface) bus. SPI based systems normally have a single bus controller...
Story When people think about asset trackers, typically they think about tracking things that should move: planes, trains, and automobiles. What we don't think about as frequently is keeping track of things that shouldn't move: statues,...
The diagram below shows the subsystems and their major physical components. Connecting each physical component is an interface line that has to be physically connected and possibly addressed from a software perspective. Chasis Sub-System: After decades...
To remove the redundant HC-06 Bluetooth module and be able to utilize BLE (Bluetooth Low Energy), I decided to employ an Arduino Nano 33 BLE to build my new room lighting system. In addition to adjusting room lighting, I wanted this project to report...
Way back in the late 80s, I remember seeing a TV show (I think it was Amazing Stories) which featured an interesting clock. It was round, black, about the same size as a normal wall clock, and all done up in LEDs. The LEDs appeared to be what I now recognize...