Multi-Node LoRa Alarm Mesh
Multi-Node LoRa Alarm Mesh Kit – Self-Routing Wireless Security System
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Secure a large property, warehouse, or farm with a custom wireless alarm system that doesn’t rely on a single point of failure. This kit empowers you to build eight battery-operated sensor nodes that detect motion and door events, then relay alerts through a self-routing LoRa mesh to a central gateway panel. No cloud, no subscription—just robust, long-range communication across hundreds of meters.
What You’ll Build
A fully functional, eight-node LoRa alarm network. Each sensor node houses a PIR motion sensor and a magnetic reed switch, monitoring its assigned zone. When triggered, the node transmits an encrypted packet; if the gateway is unreachable directly, neighbouring nodes automatically forward the message. The central gateway logs events and can activate a siren or integrate an optional GSM module for SMS alerts.
What You’ll Learn
- Designing a self-healing LoRa mesh protocol from scratch
- Calibrating HC-SR501 PIR sensors for outdoor and indoor motion detection
- Implementing battery management and deep sleep for months-long operation on an 18650 cell
- Integrating sensor fusion to reduce false alarms using reed switch and PIR logic
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 9 |
| RA-02 LoRa | 9 |
| HC-SR501 PIR | 8 |
| Reed Switch | 8 |
| 433MHz Antenna | 9 |
| 18650 Cell | 8 |
| TP4056 Module | 8 |
| 100nF Caps | 30 |
| 10kΩ Resistors | 20 |
| PCB Prototype Board | 9 |
| Waterproof Enclosure | 8 |
| Soldering Iron | 1 |
| Solder Wire | 1 |
Why Buy This Kit Instead of Sourcing Parts Separately
| Factor | Sourcing Separately | Compoden Kit |
|---|---|---|
| Compatibility checks | Check voltage levels, SPI pinouts, antenna matching yourself | Pre-tested as a system; decoupling capacitors and pull‑ups verified for noise‑free operation |
| Build support | Scattered forum threads and generic LoRa libraries | AI companion trained on this exact 8‑node mesh project, with WhatsApp backup |
| Time to first working build | Weeks of integrating libraries and debugging range issues | 12‑15 hours with step‑by‑step videos and pre‑written mesh library |
| Shipping coordination | Multiple sellers, weeks of waiting for all parts | One shipment from Bengaluru in 3‑5 days |
Who This Kit Is For
Ideal for B.Tech ECE/EEE final‑year students prototyping wireless sensor networks, Smart India Hackathon teams building rural surveillance solutions, and R&D engineers developing low‑power IoT security for agricultural land or factory perimeters. If you’re comfortable with Arduino IDE and soldering, this advanced kit delivers a real‑world, deployable mesh alarm system.
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 to chat with the AI companion, or message us on WhatsApp for personalised help.
Can I expand the mesh beyond eight nodes?
Yes, the mesh protocol supports up to 254 nodes. Just add extra Arduino Nano, RA‑02, sensors, and battery modules—the source code is fully modifiable.
How far can the nodes transmit?
In open air, the RA‑02 with 433MHz antenna reaches 1–2 km. Through walls, expect 200–500 m per hop; the mesh extends total coverage by relaying through multiple nodes.
Does the gateway need an internet connection?
No, the gateway operates standalone with local logging and siren. You can add an ESP8266 or GSM module later if you want remote phone notifications.
Eight LoRa sensor nodes self-route alarm messages through mesh to a central gateway panel.
What's in this kit
- Arduino Nano x9
- RA-02 LoRa x9
- HC-SR501 PIR x8
- Reed Switch x8
- 433MHz Antenna x9
- 18650 Cell x8
- TP4056 Module x8
- 100nF Caps x30
- 10kΩ Resistors x20
- PCB Prototype Board x9
- Waterproof Enclosure x8
- 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