I created it as a fun night light for my kids. On this page, youll find circuit diagrams for a wide range of fun and interesting electronic circuits: Transistor circuits. I've used the random() function to vary which PWM output Contact Circuits for Hobbyists - a Collection of Schematics to Build How do you become better at electronics By building lots of circuits. It varies the delay betweenīlinks and varies the total blink time. Here's my modified code: /*This sketch is intended to approximate the blinking of fireflies. I also tweaked the delay times to get shorter times between one LED blinking to another starting to blink. The device, a wearable night light that can minimize disturbances for sleeping patients, is the brainchild of a University of Pennsylvania senior and a neonatal I.C.U. I modified the code from this originally to utilize the TrueRandom library because I found when the program was powered up after being shut down it was actually not random at all but picking the exact same LEDs (meaning if I watched the pattern for 5 minutes and it was lighting LEDs 1, 4, 3, 2, 2, 5, etc, if I powered it down and powered it back up again it would light 1, 4, 3, 2, 2, 5, etc). I wasn't able to get an answer from elsewhere, so I thought this might be my only option (posting in the new forums about the old topic). The most common one used is a photoresistor or light-dependent resistor. I hope the mods here don't mind (or it isn't frowned upon) to continue upon one of the topics from the read-only forums. By Nikhil Agnihotri Light sensors are widely used in electronic applications.
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