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pcfens / RaspberryPi-AS3935

A basic library for working with the AS3935 that's connected to the Raspberry Pi.
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Constant false detection #10

Closed jcroucher closed 9 years ago

jcroucher commented 9 years ago

I just got my sensor ( MOD-1016 v6 ) and pi setup. It seems to connect up properly but it is giving lots of false positives. It is a clear sunny day, definitely no lightning around. The box is inside at the moment. Could it just be some sort of interference or a calibration issue?

pi@towerpi ~/lightning/RaspberryPi-AS3935 $ sudo python demo.py Waiting for lightning - or at least something that looks like it Noise level too high - adjusting We sensed lightning! It was 1km away. (02:35:44 - 2014/11/02)

We sensed lightning! It was 1km away. (02:37:04 - 2014/11/02)

We sensed lightning! It was 1km away. (02:38:08 - 2014/11/02)

We sensed lightning! It was 1km away. (02:38:12 - 2014/11/02)

We sensed lightning! It was 1km away. (02:38:20 - 2014/11/02)

We sensed lightning! It was 1km away. (02:38:34 - 2014/11/02)

We sensed lightning! It was 1km away. (02:42:19 - 2014/11/02)

We sensed lightning! It was 1km away. (02:42:57 - 2014/11/02)

We sensed lightning! It was 1km away. (02:43:31 - 2014/11/02)

..and so on.

I am using a Raspberry Pi B+ with MOD-1016 v6.

I modified the sensor address to be sensor = RPi_AS3935(address=0x03, bus=1)

pi@towerpi ~/lightning/RaspberryPi-AS3935 $ sudo i2cdetect -y 1 0 1 2 3 4 5 6 7 8 9 a b c d e f 00: 03 -- -- -- -- -- -- -- -- -- -- -- -- 10: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 20: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 30: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 40: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 50: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 60: -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- -- 70: -- -- -- -- -- -- -- --

I have set tun_cap to match Tune 5 listed on the packet. sensor.calibrate(tun_cap=0x05)

Is there something I have missed? or has something changed in version 6 of the board?

jcroucher commented 9 years ago

I think there may have been a power issue or interference from a fan inside the case. I have turned off the cooling fan and I am no longer getting false detections.

pi@towerpi ~/lightning/RaspberryPi-AS3935 $ sudo python demo.py Waiting for lightning - or at least something that looks like it Disturber detected - masking

pcfens commented 9 years ago

My first suspicion was some electrical noise from nearby.

I'm going to close this issue since it sounds like you've gotten it taken care of and it wasn't a software issue. Feel free to comment or re-open if you need any help.