What's in those "45 in one" sensor kits?

Have you ever wondered what's in those "45 in one sensor kit for Arduino" sets you can find on ebay (and other places)? Me too, so I got one to look at. While there is quite a bit of overlap in some of the sensors, there is a good variety for learning and experimenting how your Arduino can interact with the real world. I have done several videos in the past that feature (and go deeper into) a few similar modules: Laser module:    • laser chase lights   A different type of touch sensor:    • tinkering with touch sensors      • model railroad yard controls   Rotary Encoder (Gadget Reboot's video):    • How To Use A Rotary Encoder Without Software   Soil Moisture Sensors:    • tinkering with soil moisture sensors   Fridge temperature logging (DHT type temperature sensor and SD card module):    • beer fridge data logger   IR proximity sensor:    • Train Detection second try - this time for...      • Hidden staging track train detector   Ultrasonic distance sensor:    • tinkering with an ultrasionic distance module   ----- My tip jar:   / pileofstuff   If you are OK with me getting a commission on your e-bay purchases, feel free to use my affiliate link: https://ebay.to/33IF7PA https://lbry.tv/@pileofstuff ----- This isn't the only way to do it. It's probably not the best way to do it. But it's how I do it.