Automatic Hand Sanitizer

thingiverse

The statistics reveal that an average human possesses fewer than two arms. This remarkable innovation flourishes despite this reality. I have repurposed spare components: * Ultrasonic HC-SR04: You can use an infrared sensor to conserve battery life. * Thermal glue * 9V Battery * 9V Battery connector * Arduino Pro Mini 5V (accepts up to 12v input): If you have a 3V setup, you can remove the resistor from the board to enable 12v input, which it can handle. * Toggle switch * MG996R servo - severely oversized and overpowered Arduino code: * **https://gitlab.com/random\_weekends\_projects/automatic\_hand\_sanitizer** Electronic schema: * You can deduce the three connections from the source code. Videos: * https://youtu.be/4rUDopdRhQs * https://youtu.be/xu0SeEST_0M Note: Some comments suggested that this product is unsuitable for people without arms, but this notion is unfounded. They can still use it to apply soap to their hands by swinging it in front of the ultrasound sensor.