Simple Contactless hand sanitizer / Soap Dispenser

Automatic hand sanitizer using a 9 gram servo, ultrasonic proximity sensor and arduino nano. The mechanism is very simple using only a string to push down on the cap of the hand sanitizer.

In depth tutorial:

3D print files:

Arduino code:

For further questions feel free to contact me via e-mail.

9 thoughts on “Simple Contactless hand sanitizer / Soap Dispenser”

    1. Hi. Marko here (see link on the right, “Site sponsor”, a.k.a. the Dad). Maj opened the drawer: what do I have in here? Oh, look, arduino and a box of old servos… The ultrasound sensors were from some old projects. The components were just on hand.

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