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Old 09-19-2019, 07:42 PM
talon167 talon167 is offline
Join Date: Jan 2019
Location: Maryland
Posts: 4
Lightbulb RV Project Idea - AS3935 IC Lightning Detector

For the electronics hobbyists among us... would this be useful in an RV as secondary/backup?

Spankfun 4x4 mm AS3935 Lightning Sensor IC board for 24.95 (need to pair with cheap MCU)"]AS3935 DataSheet

  • 40km radius range w/accuracy of 1km in 15 steps
  • Programmable detection levels/thresholds
  • Distance to storm estimation (edge of storm, not lightning event)
  • IC-embedded false event rejection algorithm
  • SPI programming interface
  • Supply Voltage: 2.4V - 5.5V (internal IC voltage regulator)
  • Auto IC calibration
  • Passive detection of cloud-to-cloud as well as cloud-to-ground
  • Built-in antenna (500KHz Resonant Frequency)

Programming is really simple - the hardwired, distance estimation algo simply issues an interrupt on the IRQ pin. Use a connected MCU to provide UI (text on MCU LCD, lights, sounds, etc). SparkFun has ardunio code on GitHub and detailed instructions.

Interference @ 500KHz (may be difficult to shield detector from)
  • Inductor DC to DC converters absent mumetal shielding on the converters
  • smart phone and smatch watch displays (when display is active)

The board is designed for use in diy weather stations.
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Old 09-20-2019, 03:46 PM
ppilotmike's Avatar
ppilotmike ppilotmike is offline
Join Date: Jan 2010
Location: Denver, CO
Posts: 1,956

I think it's a neat idea. There are a few people who have played with making up their own boards and/or using Arduinos, so maybe someone will do it.
Mike Rettig
EAA Chapter 301
VAF Dues Current
RV-10 Working on the "Dreaded Doors"
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