1 Use a Raspberry Pi to Fix Everyday Problems. Become the Office Hero!
A Raspberry Pi project that shows whether an office toilet is occupied by updating a web page from a switch, often linked as a door sensor starting point.
Topic
sensors
11 videos. Ranked by independent recommendations, not by views.
2 Digital Scale Strain Gauge Weight Sensor
A practical video on reading strain gauges from a salvaged scale, linked for its schematic when people ask how to build a weight sensor.
3 How to use linear encoders with Arduino. hardware, code, and demo.
Recommended as a clear explanation of how salvaged printer optical encoder strips produce quadrature signals you can read for position and direction.
4 Arduino High Speed Photography Trigger
An Arduino project that fires a camera from a sensor, offered as a straightforward example of controlling photography hardware.
5 Raspberry Pi Tutorial 26 - GPIO DHT22 Digital Temperature + Humidity Sensor
Part of a numbered Raspberry Pi tutorial series, showing how to wire a DHT22 temperature and humidity sensor and read it from Python 3.
6 How Rotary Encoder Works and How To Use It with Arduino
A visual explanation of quadrature encoders, showing why comparing the two output signals reveals direction and why counts exceed the number of teeth.
7 How anti-theft tags work - magnetostriction
Linked to explain how magnetostriction based shop security tags work, offered as the starting point when people ask about anti-theft gates.
8 How Capacitive Liquid Level Sensors Work: GILLSC.com
Explains capacitive liquid level sensing, the approach used in aircraft fuel tanks, and is recommended whenever someone wants to gauge liquid depth without moving parts.
9 SparkFun RGB and Gesture Sensor
A short product demonstration of the APDS-9960 gesture and colour sensor, linked when people want a cheap way to detect hand movements.
10 First Look: RC522 RFID Reader/Writer ($4 on eBay)
A detailed look at the RC522 RFID reader module and how to use it with an Arduino, praised as a clear explanation of a fiddly part.
11 DHT22 Raspberry Pi Humidity Temperature Sensor Tutorial
A tutorial for wiring a DHT22 humidity and temperature sensor to a Raspberry Pi and reading it with Python via pigpio, which people confirm works.
