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Rohm Semiconductor
RKX-EVK-001 Evaluation Kit
AS3935 Demo Kit
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AS3935 Demo Kit

AS3935-DK Demo Kit for the AS3935 Franklin Lightning Sensor™


The AS3935 Franklin Lightning Sensor™ Demoboard is a fully operational handheld lightning sensor which is able to estimate the distance to the head of upcoming storms. Lightning events will trigger the AS3935 demo kit and will be shown on the LCD. The display will show detail information about approaching and departing storms and the actual distance to the head of the storm. The buzzer provides also audio signal in case events are detected.

Product Description

The hardware is a low power design enabling long battery life time with the 3V coin cell CR2032. For easy debugging of the SPI interface, all the I/O lines of the AS3935 are accessible via a row of pin headers.

The GUI offers advanced register settings of the AS3935 that enables the user to adjust the sensor according to the environment. Diagnostic features as the automatic antenna tuning and the tuning of the RCO’s are implemented. The GUI also allows the user to access the volatile history that saves lightning events with their timestamp and distance.

The AS3935 Franklin Lightning Sensor Demoboard comes with an handheld Lightning Emulator Board in order to emulate presence of a storm. A far strike, mid strike and close strike can be emulated as well as a disturber and noise.

  • Franklin Lightning Sensor provides early warning indication of lightning storm activity within a 40km range
  • Provides distance estimation to the head of the storm
  • Detects both cloud-to-ground and intra-cloud (cloud-to-cloud) flashes
  • Intelligent algorithm provides for false disturber rejection
  • Programmable detection levels enable threshold setting for optimal configurability
  • SPI and I²C interface is used for control and register reading
  • Automatic Antenna Tuning
  • Supply voltage range 2.4 to 5.5V
  • Power-down, listening and active modes
  • Temperature range: -40°C to 85°C
  • Watches
  • Key chains
  • Golf Carts
  • Pool Safety
  • Portable GPS
  • Bike Computers
  • Weather Stations
  • Sports Equipment
  • Uninterruptible Power Supply
  • Power line conditioners
  • Hi-Fi Electronics
  • Smart Grid systems
  • Environmental monitoring Systems
Kit Contents:
  • AS3935 Franklin Lightning Sensor™
  • Lightning Emulator Board
  • CR2032 and CR2450 battery cells
  • USB Cable
  • Software + Documentation on USB stick
  • Interface:I²C, SPI
  • Sensor Type:Lightning
  • Supplied Contents:Board(s), Cable(s)
  • Utilized IC / Part:AS3935
  • Voltage - Supply:2.4V ~ 5.5V