Furthermore, the vacant solder pads near the three-pin interface header is for mounting a light-dependent resistor (LDR ... IDE compatibility. The code is an Arduino project for the Digispark Attiny85 ...

[Gord Payne] has one with an elegant sensor ... reaching the LDR from the LED decreases as the pipe is bent, and with a simple divider circuit a voltage can be read by an Arduino.

Serial Plotter is an amazing tool available in Arduino IDE (from v1.6.6) to visualize the ... Here, a standard light-dependent resistor (LDR) is used as an analog input sensor and directs its output ...

Arduino libraries ... standard integrated development environment (IDE). They are commonly used to interface with hardware (such as a display or sensor) or for adding code functionality (data ...