Raspberry Pi: Using GPIO Inputs

How to connect physical switches, reed switches and an Adafruit IR reflectance sensor to any Raspberry Pi and communicate with them using Python. I also explain in depth the concept of pull-up and pull-down resistors. You can access all of the code and circuit diagrams featured in this video here: http://www.explainingcomputers.com/pi_gpio_inputs_video.html The Adafruit IR reflectance sensor can be obtained from Adafruit in the USA here: https://www.adafruit.com/product/2349 -- or from Pimoroni in the UK here: https://shop.pimoroni.com/products/reflective-ir-sensor-with-470-and-10k-resistors You may also like my videos on Raspberry Pi robotics, such as this one in which I explain how to use GPIO inputs: https://www.youtube.com/watch?v=41IO4Qe5Jzw I also have a playlist of Raspberry Pi cooling videos here: https://www.youtube.com/playlist?list=PL2m2YvnrOYxIMTaGELL_ib8BHQYbBYRG4 Some of my other Raspberry Pi videos include this one where I spend a whole week using a Raspberry Pi as my only computer: https://www.youtube.com/watch?v=7QH6RDzllls More videos on computing-related topics can be found at: http://www.youtube.com/explainingcomputers You may also like my ExplainingTheFuture channel at: http://www.youtube.com/explainingthefuture