Robot Scallop/Clam

thingiverse

Here's a fun project I made - a robot scallop that screams when it gets scared in the dark! A quick rundown on how it works: I used an Arduino Uno for this project, which is a great little board for building robots. To sense the light level inside the shell, I used a light dependant resistor. This tiny component is super useful for detecting changes in brightness. A SG90 micro servo opens and closes the shell with ease, making it look like a real scallop moving its shell. The speaker is connected to an amplifier that gets switched on and off by a MOSFET. This allows me to control when the robot screams! I also connected the audio signal to the amplifier via a standard audio jack - super easy to do! You can check out the Arduino code for this project over at GitHub: https://github.com/isaac879/Robot-Scallop And if you want to see it in action, there's a video of it working on YouTube: https://youtu.be/lZptclkpTiA To make the shell open and close smoothly, I used 0.7mm diameter wire as the hinge - it's super thin and works perfectly for this project. I also used this wire to attach the servo arm to the "link_bar", which is connected to a sturdy 16mm M3 bolt and square nut on the other side. This makes sure everything stays in place and moves smoothly.