Ultra Low Power LoRa Sensor
Build a 5-Year Battery LoRa Sensor Node 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.
Deploy a weatherproof LoRa sensor that silently monitors temperature, humidity, and pressure from a remote field, greenhouse, or campus rooftop. Powered by a single CR123 battery, it sleeps between hourly transmissions to achieve a 5-year runtime — no wiring, no regular maintenance.
What You'll Build
A compact, IP65-rated outdoor sensor node that transmits DHT22 and BMP280 readings to any LoRaWAN gateway. You'll assemble the full hardware stack, solder components onto a prototype PCB, and program the Arduino Nano 33 IoT’s ATSAMD21 microcontroller to enter deep sleep, wake on an RTC alarm, take sensor readings, and send a tiny data packet over the RA-02 LoRa module — all while sipping nanoamps.
What You'll Learn
- Program SAMD21 deep sleep modes for sub-µA current consumption
- Interface DHT22 and BMP280 sensors with power gating to extend battery life
- Configure RA-02 LoRa module for maximum range with minimal transmit power
- Design a weatherproof enclosure with proper venting and antenna routing
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
Engineering students (B.Tech ECE, EEE, CSE) building IoT capstone projects, participants in Smart India Hackathon or TI India Innovation Challenge, and advanced makers at campus innovation labs (IIT, NIT, VIT, BITS) who need a rugged, long-life remote sensing solution. If you're tackling a final-year project that must run unattended in a field or on a rooftop, this kit gives you the power-optimised head start you need.
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?
Our AI companion provides step-by-step troubleshooting trained on this exact kit. If you still need help, WhatsApp us a photo of your setup and an engineer will respond within 4 hours.
How do I achieve 5-year battery life?
We provide optimised firmware that puts the SAMD21 into standby sleep with RTC wake-up, disables all unused peripherals, and transmits only once per hour with minimal power. The CR123 battery's capacity and the sensor's design are matched for this longevity.
Can I modify the transmission interval?
Absolutely. The code is fully documented; you can adjust the interval in the firmware. The AI companion will guide you on recalculating battery life for your chosen schedule.
Is the enclosure truly weatherproof for monsoon?
The IP65-rated waterproof enclosure includes a breather vent to prevent condensation while keeping out rain and dust, tested in coastal Kerala and Rajasthan summers.
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