HVAC Shutter servo by temperature and raindrops sensors

Temperature Sensor

SG90 Micro-servo motor

Arduino UNO

Jumper wires (generic)

LED, RGB

Resistor 4.75k ohm

Resistor 221 ohm

Raindrops sensor

<p >A small apartment in a tropical coutry that needs HVAC system to be built inside the apartment area. The shutter was built with the linked fins to be attached later on a servo. (photo below).</p><p >I didn't want the shutter to be always open due to rain and birds.</p><p ></p><div class="se-component se-video-container __se__float-none" contenteditable="false" style="width: 100%;"><figure style="width: 100%; height: 56.25%; padding-bottom: 56.25%; margin: 0px;"><iframe frameborder="0" allowfullscreen="" src="https://www.youtube.com/embed/iHWJkI-Q6PU" data-proportion="true" data-percentage="100%,56.25%" data-size="100%,56.25%" data-align="none" style="width: 100%; height: 100%;" data-index="0" data-file-size="0" data-origin="100%,56.25%"></iframe></figure></div><p ></p>

CAD Schematics

Servo controlled shutter for HVAC external unit enclosure ventilation

To be installed

HVAC Shutter servo by temperature and raindrops sensors

Servo define positions by temperature and raindrops sensors conditions.