Aquarium Temperature Monitor Kit – ESP32-Driven Servo Vent for Attic Cooling

Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.

In an Indian summer, an attic room can cross 45 °C, overheating your aquarium water and stressing its inhabitants. Instead of running an AC or chiller, this kit lets you build a smart vent that opens the moment the attic temperature rises above the outdoor reading. Three DS18B20 probes track the water, attic air, and outside environment; the ESP32 then drives two SG90 servos to open a louvered vent proportionally. Cool outside air flows in naturally, stabilising the tank without constant human intervention.

What You'll Build

You assemble a complete control module inside the provided enclosure. The ESP32 reads temperature from each waterproof DS18B20 probe — one submerged in the aquarium, one in the attic near the tank, and one outdoors. A 0.96‑inch OLED displays real-time readings, while the DS3231 RTC stamps every data point onto a microSD card for later analysis. When the attic‑outdoor temperature difference exceeds a threshold, the ESP32 sends PWM signals to the servos, opening the vent. The logic is proportional: a small differential opens the vent slightly; a large one opens it fully. The LM2596 buck converter steps down the 12 V adapter output, and all components are soldered onto prototype boards for reliability.

What You'll Learn

• Read multiple DS18B20 sensors using the OneWire protocol on an ESP32
• Implement proportional control logic to actuate an SG90 servo based on temperature differential
• Log timestamped sensor data onto a microSD card by interfacing a DS3231 RTC
• Integrate an OLED display and design a functional enclosure for humid attic environments

Kit Contents

Why Buy This Kit Instead of Sourcing Parts Separately

Who This Kit Is For

Advanced DIYers, B.Tech ECE/EEE final‑year students building home automation projects, and Smart India Hackathon participants tackling energy‑efficient systems will find this kit ideal. If you maintain an aquarium in an attic, loft, or converted terrace room — common in Indian homes — the build directly addresses a real problem with measurable energy savings. Familiarity with soldering and basic Arduino IDE usage is assumed.

Built and Backed by Compoden

Every Compoden kit ships with an AI build companion trained on this exact project — accessible via a QR code on the box, with WhatsApp and email backup. We've spent 10 years building projects for makers, schools, and institutions across India. If a part fails because of a manufacturing defect, replace it free within 7 days.

Choose your assembly option:

• Soldering Kit — 25W soldering iron, 60/40 solder wire, flux, and small perfboard for permanent assembly.
• Breadboard Combo — 800-point full-size breadboard with 65-piece jumper wire pack for solderless prototyping.