LoRa FHSS Frequency Hopping Radio
Build a Jam-Resistant LoRa FHSS Communication System with Arduino and RA-02
Every part needed, pre-tested for compatibility, with an AI build companion trained on this exact project. Shipped from Bengaluru in 3-5 days.
Create a pair of 433MHz transceivers that automatically hop across multiple channels using synchronized real‑time clocks, delivering robust communication immune to interference and deliberate jamming. This kit lets you test the real‑world advantage of FHSS over static‑frequency LoRa links, ideal for secure field deployments or competitive engineering challenges.
What You'll Build
Two battery‑powered transceivers that execute a pre‑defined hopping sequence, displaying signal strength and hop index on OLED screens. You’ll log link performance to a microSD card and conduct side‑by‑side range tests against a fixed‑channel LoRa setup, quantifying FHSS resilience in noisy environments.
What You'll Learn
- Synchronizing transceivers via DS3231 real‑time clocks to maintain precise frequency hopping schedules
- Implementing spread spectrum techniques to evade narrowband jamming and multipath fading
- Measuring and comparing range, packet loss, and reconnection time between FHSS and static‑channel LoRa
- Designing portable sensor nodes with LiPo batteries and integrated TP4056 charging circuits
Kit Contents
| Component | Quantity |
|---|---|
| Arduino Nano | 2 |
| RA-02 LoRa | 2 |
| 433MHz Antenna | 2 |
| DS3231 RTC | 2 |
| MicroSD Module | 1 |
| 0.96in OLED | 2 |
| 100nF Caps | 10 |
| PCB Prototype Board | 2 |
| 3.7V LiPo 1000mAh | 2 |
| TP4056 Module | 2 |
| 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
Designed for final‑year B.Tech ECE/EEE students exploring anti‑jamming wireless protocols, participants in Smart India Hackathon creating resilient IoT links, and hobbyists with Arduino experience who want a production‑grade FHSS reference design. Also fits advanced ATL tinkerers and research projects at IITs, NITs, and VIT.
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 for the AI companion trained on this kit—it provides step‑by‑step debugging. You can also send a photo to our WhatsApp support for human help within hours.
Do I need to write all the code from scratch?
No. The kit includes pre‑written FHSS firmware with configurable hop tables and timing logic; you’ll modify it to explore spread spectrum concepts and performance testing.
What range improvement can I expect with FHSS vs static LoRa?
FHSS doesn’t inherently boost peak range, but it maintains reliable connectivity in heavily jammed or multipath‑rich environments where static LoRa would fail. You’ll log and observe this advantage in your own tests.
Is this kit legal to operate in India?
Yes. 433MHz is a license‑free band for low‑power non‑commercial use as per WPC India guidelines. The included modules operate well within permitted limits.
RA-02 LoRa uses frequency hopping spread spectrum. Resistant to jamming and interference. Range tested vs static.
What's in this kit
- Arduino Nano x2
- RA-02 LoRa x2
- 433MHz Antenna x2
- DS3231 RTC x2
- MicroSD Module
- 0.96in OLED x2
- 100nF Caps x10
- PCB Prototype Board x2
- 3.7V LiPo 1000mAh x2
- TP4056 Module x2
- 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.
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