![](https://blogger.googleusercontent.com/img/b/R29vZ2xl/AVvXsEhNnlF17ZIPG8PBe97QnAFymWGuCFEJHum8kGLdGNukexuZv7EyUXs36oc9rwG8B5mqioiDHTi3caqtYdTy1lvz1aLkIMgG5su09haWqJUx4ak2fT9cRslDz9wRCAghrLFuyp4eeg83zeE/s320/photo-728081.jpg)
Here's a close-up of the stuff I crammed into a breadboard at a weekend Arduino workshop. I had been playing with LEDs to start, then I added in the on/off button and learned digital inputs ... then I added that photoresistor and learned about analog sensors. This is exactly what I meant by "play."
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