If you’re not aware, there is such a thing as adorable little three digit LCD 7-segment displays. They come in a ten-pin DIP ...

Are you unable to use your touchpad, biometric, touchscreen, or any other interactive on your PC? If the I2C HID Device Driver is not working on Lenovo, Dell, Acer, ASUS, etc laptop, then follow this ...

I purchased one of each of these cheap sensors recently from aliexpress for testing purposes. Compared with the ubiquitous HC-SR04 (*), I liked the idea of having a combined emitter/receiver, i.e.

const byte lineSensor1 = 0; // ir sensor to SX1508's pin 0 const byte lineSensor2 = 1; // ir sensor to SX1508's pin 1 const byte lineSensor3 = 2; // ir sensor to SX1508's pin 2 const byte lineSensor4 ...