Server Room Temperature Monitor Kit v18
Build a 5-Year Battery LoRa Server Room Temperature Monitor with Arduino Nano 33 IoT
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
This kit turns an Arduino Nano 33 IoT and a RA-02 LoRa module into a maintenance-free sensor node that monitors server room temperature, humidity, and barometric pressure for up to five years on a single CR123 battery. Designed for data centre engineers and B.Tech students tackling Smart India Hackathon challenges, the node enters deep sleep between hourly transmissions, drawing just microamps. No wiring guesswork—all parts arrive pre-selected for compatibility, so you can focus on assembling the waterproof enclosure and deploying a reliable LoRa uplink.
What You'll Build
A compact, IP-rated sensor package that sits inside a server rack or on a cold-aisle wall. Every sixty minutes it wakes up, reads ambient conditions from the DHT22 and BMP280, formats a data packet, transmits it via the RA-02’s 433MHz LoRa transceiver, and then returns to sleep. The CR123 cell lasts five years because the ATSAMD21 microcontroller on the Nano 33 IoT toggles into standby mode with the LoRa module powered down. The result is a drop-in monitoring point that feeds temperature, humidity, and pressure trends to any LoRaWAN gateway over kilometers of concrete-floored data floor.
What You'll Learn
- Program extreme low-power states on an ARM Cortex-M0+ chip, cutting current to single-microamp levels during sleep
- Interface I2C and one-wire sensors with Arduino to read temperature, humidity, and barometric pressure accurately
- Configure the RA-02 LoRa module for spread-spectrum, long-range transmission that penetrates server racks and walls
- Calculate power budgets and battery life predictions, and select components like the CR123 cell to meet a 5-year runtime
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano 33 IoT | 1 |
| RA-02 LoRa | 1 |
| DHT22 | 1 |
| BMP280 | 1 |
| 433MHz Antenna | 1 |
| CR123 Holder | 1 |
| 100nF Caps | 5 |
| PCB Prototype Board | 2 |
| Waterproof Enclosure | 1 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
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
B.Tech ECE and EEE students at IITs, NITs, VIT, or BITS Pilani who need a working wireless sensor for a minor/major project or Smart India Hackathon prototype. Also suits IT infrastructure teams and data centre facility managers who want a zero-maintenance monitoring node that can be deployed inside a live server room without pulling new cables or swapping batteries every few months.
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?
Scan the QR code on the box to open the AI companion, which walks you through each soldering step and code upload. You can also reach us on WhatsApp for personalised help.
Do I need a LoRa gateway to receive the data?
Yes, the sensor transmits raw LoRa packets; you will need a compatible LoRaWAN gateway or a second Arduino with an RA-02 receiver to forward data to a dashboard. The kit includes all components for the sensor node only.
Can I repurpose the kit for outdoor temperature logging?
Absolutely. The waterproof enclosure and ultra-low-power design make it suitable for weather stations, cold chain monitoring, or agricultural sensor deployments. Just adjust the code to match your desired reporting interval.
How do I achieve the five-year battery life stated?
The provided firmware example puts the ATSAMD21 into deep sleep, cuts power to the sensors and LoRa module via a load switch, and wakes only on an RTC alarm. With the CR123 cell’s 1,500 mAh capacity and the hourly transmission current of ~30 mA for 1 second and ~15 µA sleep, you get a theoretical 5-year runtime. We include the exact power profile in the build guide.
Data Centre — ATSAMD21 + RA-02 LoRa. Deep sleep between transmissions. CR123 battery lasts 5 years transmitting hourly.
What's in this kit
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.
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