Ok, cool experiment, but what the hell does this have to do with a riflescope? This is where it gets hillbilly simple. Imagine your phone is the reticle in your riflescope and that everything ...

After this tedious step, he designed a PCB that hosts an Arduino Nano to accept input, two MCP23017 GPIO expanders to give it enough outputs, and CD4066BE CMOS switches to trigger the connections.

Connect the VCC pin to the Arduino's 3.3V (not 5V), and GND to the ground rail. For the data connections, wire SDA to Pin 10, SCK to Pin 13, MOSI to Pin 11, MISO to Pin 12, and RST to Pin 9. Wire your ...

The main takeaway is that QLED is closer to regular old LCD than it is to OLED, which I (and most other experts) consider a distinctly different class of television, much like plasma before it.