Hey. I have just finished making the instructions for the first working version. They are admitedly not very good at the moment, but I will be working on them some through the weekend so that they will hopefully be better before the end of the Halloween 2023 competition.
The sole example on the GitHub is of a 'demonic woman screaming'. I will try to get some more up there quickly included the requested pennywise laugh.
I will also be making a more proper schematic than the fritzing version, so that hopefully more documentation will make it all better.
Other than that I hope you enjoy and feel free to add your own examples to the GitHub: https://github.com/PhysicsUofRAUI/scary-sound-effects/.
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I want to mention this first version is heavily inspired by https://www.instructables.com/Talking-Arduino-Playing-a-MP3-With-Arduino-Without/, and used the information from https://howtomechatronics.com/tutorials/arduino/ultrasonic-sensor-hc-sr04/ to learn to program the hc-sr04
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