Binary clock using Arduino, DS3231 real time clock, and WS2811 Addressable LEDs

You may have remembered I started working on a binary clock project with the Arduino. There are two things I didn’t like about that project. First, the clock didn’t keep time. It ran about 37 seconds fast. Second, it required the use of almost all pins on the Arduino. I started working on a new binary clock project with the requirements that it kept accurate time, it didn’t use as many pins, and I could set the time. I sacrificed the addressable LEDs I had used for my Christmas Tree Lights and began to work on the new binary clock.

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LED lightning effect using an Arduino

Sorry for the poor video quality. Because of the flash rate and the way a CMOS senor works, it cannot record the true effect.

This lightning effect uses addressable LEDs. The code generates a random number of flashes, a random brightness level for each flash, a random delay between flashes, and a random delay between the overall effect. See the code after the break.

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Working on a binary clock

I started work on a binary clock. I found some code by Dennis Cwik and tweaked it to be able to rapidly advance the time as a crude way to set the clock. What I don’t like about this build is it is using all the digital outs. I think I will rewrite it to use addressable LEDs instead. That will only use one digital out and I can do so much more and look better as well. But for now, here’s what I have.

Spooky Mirror

In December, a friend approached me and asked if I could create a visual effect for him. The requirements are to flash a strobe light, activate only when someone is in front of the effect for a couple of seconds, and wait for the person to walk away before it can be activated again. It had to be hidden in a two-way mirror to illuminate a picture behind the glass.

Here’s the circuit I came up with. Unfortunately I never got to see it in action.

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