Pet Activity Monitor Kit with Arduino Uno + LED
Pet Activity Monitor Kit with Arduino Uno & OLED Display — Smart Fan Control for Your Pet's Comfort
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Imagine your pet staying comfortable even when you’re away. This kit lets you build a system that monitors room temperature and your pet’s presence, then dynamically adjusts a fan’s speed using phase-angle control — preventing overheating or wasteful cooling. It’s a real-world automation project that combines environmental sensing with power electronics.
What You'll Build
You’ll assemble a fully functional pet activity monitor. The DS18B20 probe measures ambient temperature while the HC-SR501 PIR sensor detects your pet’s motion or occupancy in a room. An Arduino Uno reads both signals and outputs a PWM signal through a MOC3021 optocoupler to control a BT136 TRIAC, varying fan speed smoothly between off, low, and high. The 0.96-inch OLED displays current temperature, motion status, and fan speed level, and the DS3231 RTC logs activity patterns for later analysis.
What You'll Learn
- Calibrating digital temperature sensors and PIR modules for reliable data
- Implementing phase-cut PWM with a TRIAC and optocoupler for AC fan speed control
- Designing a real-time data logging system with RTC and OLED display
- Integrating multiple subsystems and troubleshooting embedded hardware
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Uno R3 | x1 |
| DS18B20 Probe | x1 |
| HC-SR501 PIR | x1 |
| BT136 TRIAC | x1 |
| MOC3021 Optocoupler | x1 |
| DS3231 RTC | x1 |
| 0.96in OLED | x1 |
| 10kΩ Resistors | x10 |
| 220Ω Resistors | x5 |
| 100nF Caps | x10 |
| PCB Prototype Board | x2 |
| 12V Adapter | x1 |
| Soldering Iron | x1 |
| Solder Wire | x1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | You verify every part | Pre-tested as a system |
| Build support | Forums and scattered tutorials | AI companion trained on this exact project |
| Time to first working build | Days of debugging | Hours, with step-by-step guidance |
| Shipping coordination | Multiple sellers, multiple delays | One shipment from Bengaluru in 3-5 days |
Who This Kit Is For
This advanced kit is ideal for engineering students (B.Tech ECE, EEE, Mechatronics) working on IoT or home automation projects, participants of the Smart India Hackathon focusing on pet care or energy efficiency, and hobbyists who have completed basic Arduino projects and want to tackle AC power control. If you’ve already built a blinking LED and a temperature logger, this kit bridges the gap to real-world appliance automation.
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.
What if I get stuck during the build?
Every kit includes an AI companion with step-by-step guidance and videos for this exact project. You can also reach out via WhatsApp for human support during Indian business hours.
Is it safe to work with AC mains for the fan control?
The circuit uses an optically isolated TRIAC driver (MOC3021) for galvanic separation. We provide a detailed wiring guide and strongly recommend testing with a low-voltage DC fan first before connecting to 230V AC if you’re new to mains-level electronics.
Can I connect multiple fans or larger appliances?
The BT136 TRIAC is rated for 4A continuous, suitable for most room fans up to 200W. For larger loads, you’d need an appropriately rated TRIAC and heat sink. The control logic remains the same; our AI companion can suggest modifications.
Does this require a Wi-Fi module for remote monitoring?
This kit focuses on local control and logging. The DS3231 RTC timestamps motion events for offline review. If you want IoT connectivity, you can add an ESP8266 or NodeMCU later using the extra prototyping space on the provided PCBs — our community forums have guides on integrating it.
Pet Tracking — DS18B20 room temperature + occupancy PIR together set fan speed optimally via TRIAC PWM dimmer.
What's in this kit
- Arduino Uno R3
- DS18B20 Probe
- HC-SR501 PIR
- BT136 TRIAC
- MOC3021 Optocoupler
- DS3231 RTC
- 0.96in OLED
- 10kΩ Resistors x10
- 220Ω Resistors x5
- 100nF Caps x10
- PCB Prototype Board x2
- 12V Adapter
- Soldering Iron
- Solder Wire
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.
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Shipping Information
- Prepaid Orders: ₹75 for orders up to ₹999, FREE shipping above ₹999
- COD Orders: ₹125 shipping + ₹50 COD fee = ₹175 total
- Delivery Timeline: Dispatch in 1-2 days, delivery in 2-7 days depending on location
Returns & Warranty
- 7-Day Return: Manufacturing defects only (approval required)
- Warranty: 7 days from delivery
- Non-Returnable: Batteries, consumables, cut wires, clearance items