Flashing LED On Air Sign
myminifactory
I took an existing Thingiverse On Air sign from crimsonlion518 and a 9v battery holder from ahmetcemturan to build this eye-catching On Air LED Flashing sign for Filament Friday. The design came together smoothly in Tinkercad, while the electronics were expertly assembled on a CNC milled circuit board. The electronic circuit is an efficient Astable Multivibrator circuit that powers the back and forth LED flashing without relying on any microcontroller. Check out more details in my YouTube Video:
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