Description
Product Overview
The SparkFun Lightning Detector (Part 15441) is a compact, red‑copper sensor designed for hobbyists and educators building weather‑monitoring projects. It connects directly to Arduino‑compatible boards via soldered headers and operates on 2.4 V‑5.5 V, with 3.3 V recommended. The antenna is tuned to the 500 kHz band, allowing detection of lightning strikes up to 40 km away with 1 km accuracy in 14 distance steps. A built‑in “Disturber” rejection algorithm filters out false events, ensuring clean data for your applications.
![[Product front view showing all components]](https://www.fantasyrealm.store/wp-content/uploads/2026/06/179df0bd897345038386044a8db3cb81.jpg)
Usage
Ideal for outdoor hobby projects, school labs, and DIY weather stations, this detector can be mounted on a pole or placed in a protected enclosure. Connect the headers to a microcontroller, power it from a 3.3 V source, and read strike data via simple digital pins. It works well in remote field stations, backyard storm‑watch setups, and classroom demonstrations of atmospheric electricity.
Why Choose Us
SparkFun’s reputation for quality electronics ensures that each detector is built with precision‑tuned copper components for consistent performance. The module undergoes rigorous testing to meet the #30 rank in Weather Monitors on Amazon. With clear documentation and community support, you receive a reliable sensor backed by a brand trusted by makers worldwide.
Key Features
- Detects lightning up to 40 km away, giving you early storm warnings.
- Built‑in false‑event rejection reduces noise for accurate readings.
- Compact red copper design fits easily into small projects.
- Operates from 2.4 V‑5.5 V, perfect for 3.3 V Arduino boards.
- Supported by SparkFun’s extensive documentation and responsive customer service.
FAQ
What voltage should I use?
The detector works from 2.4 V to 5.5 V, but 3.3 V is recommended for optimal performance with Arduino boards.
Do I need a separate antenna?
No external antenna is required; the built‑in copper antenna is tuned for the 500 kHz lightning band.
Can it be used outdoors?
Yes, mount the module in a weather‑proof enclosure and connect it to a protected microcontroller for reliable field use.
How does the disturber rejection work?
The algorithm filters out electrical noise and false triggers, ensuring only genuine lightning events are reported.
Is this compatible with other microcontrollers?
Any 3.3 V logic microcontroller with compatible I/O pins can use the detector, though level shifting may be needed for higher voltages.





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