GPS jamming

The Raspberry pi camera completely jams my Ublox Neo6 GPS.

I’m monitoring the jamming, ADC and noise values and whenever I turn on the camera and start capturing video, jamming goes up from 10 to 140, ADC goes down from 4600 to 1000 and the noise from 100 to 130.

This kills any fix the GPS has and it stops seeing any satellites. With the camera off I regularly get between 3-7 satellites indoors and this is with a passive antenna. With the camera on I get zero even outside.

I wrapped the entire camera in several layers of aluminum foil, same for the ribbon cable without noticing any improvement.

Only after placing a small ferrite bead on the RX/TX serial wires the ADC went up from 1000 to ~3600. So far it looks like the issue is electrical noise.

In the mean time I’m waiting for the new GPS I ordered from hobby king and also started working on supporting the NAVIO board as it has a newer GPS (the ublox 8).

This brings me to the next issue – the brain architecture is not ready to support multiple sensors of the same time.

Time to work on the software while I’m waiting for both the new GPS and the Navio board.

3 thoughts on “GPS jamming

  1. Hi, I am having the same issue when running both ublox and picamera. I tried placing the ferrite bead on Rx/Tx but the problem persists. Could you solve this? I will apreciate a lot if you can tell me how!

    1. Unfortunately no. In the end I got a Navio+ board and didn’t have any issues with it so far. GPS works together with the camera so far, with no shielding.
      Since I didn’t have an oscilloscope nor spectometer, I couldn’t isolate the cause and believed it to be electric noise. I gave up after a few days of trying various things and got lucky with the navio. I think it’s simply better made, electrically, and the fact that is has an external antenna that I can place on the quad case under a big foil of aluminium that acts as a ground place helps a lot.

      Good luck and let me know if you manage to fix the issue.

Leave a Reply to jimpsterbasic Cancel reply

Fill in your details below or click an icon to log in: Logo

You are commenting using your account. Log Out /  Change )

Google photo

You are commenting using your Google account. Log Out /  Change )

Twitter picture

You are commenting using your Twitter account. Log Out /  Change )

Facebook photo

You are commenting using your Facebook account. Log Out /  Change )

Connecting to %s