Re-Make: Light-Sensing Mini Breadboard Blinky

November 24, 2014 — Leave a comment

Last month I attended Maker Faire Atlanta with other Atlanta Hams where I helped teach kids how to build a very basic circuit with an attention-getting LED.  I blogged about that here.

I wanted to salvage that mini breadboard and I had some Adafruit Perma-Proto PCBs that were looking lonely, so I moved all everything over and soldered it into place.  It turned out pretty well, but I wasn’t so sure by the time I had arrived to the end.

I started by placing the 555 timer directly in the center of the board instead of counting out my spacing to ensure I’d h ave enough room the way everything was laid out.  As it turns out, I did, but I was right on the edge of the board when I soldered the capacitor on.  Had I started one space closer to the edge of the board, I wouldn’t have had enough room.

You can see the finished product posted on Vine:

Also, in case you’re wondering, I decided to cut a small piece of cardboard to shape and mount it on the back of the board to prevent any possibility of shorting out any connections.  I secured the cardboard to the backside of the PCB by driving staples through the holes and crimping it on the back of the cardboard.  Pretty slick if I do say so myself. 😉

Aaron Melton


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