Local Hazard Warning System
In order to make a Local Hazard Warning System, I bought a few different sensors in the previous post. I decided to try the Lightning Strike Distance Sensor (AS3935, CJMCU-3935) using I2C protocol.
Introduction Video
What is Lightning Distance Sensor?
The AS3935 or CJMCU-3935 lightning distance sensor detects the presence and approach of potentially hazardous lightning activity in the vicinity and provides an estimation on the distance of the storm.
You can find out more by Searching CJMCU-3935 Datasheet.
Find Lightning Sensor on eBay >>
Connecting to Raspberry Pi
We need 8 wires to connect this device to a Raspberry Pi using the I2C protocol.
The 3v signal to “SI”, “ADD0” and “ADD1” are required for Raspberry Pi to recognise it as an I2C device.
Test I2C Connection
Run following command to check current I2C devices.
i2cdatect -y 1This device should be under “03” if successful.
What’s Next?
The device is connected and recognised as an I2C device. However, how do you test this device? Wait for a thunder storm to come?