Circling back to Navio2 for a bit.
How many of the Navio2+PX4 users on here have encountered GPS issues/GPS interference from the hardware? This is an issue that has essentially grounded my copter for the past few months.
In the field, the setup takes forever to acquire satellites, and when it does, it rarely obtains a lock so no RTL. Got a few crashes because of those GPS issues.
Tested this with a secondary u-blox M8N GPS mounted on the quad using a 12cm tall mount, connected to u-center (Windows) using USB. The GPS would not lock, barely acquiring 2-3 satellites for minutes. Unplugged the RC receiver from Navio2, same. Shut down RPi, no change. When I unplugged the RPi from the power source, the number of acquired satellites IMMEDIATELY jumped up and the PPS LED started blinking; I had a fix.
Clearly, when power is applied to the combo, it creates interference bad enough to prevent normal GPS unit operation.
When launched in the same location my PX4 with BN-880 (same frame, similar GPS mount height) obtains GPS lock almost instantaneously and flies beautifully.
Before I start thinking about replacing components, upgrading the RPi (I doubt a product like the RPi is creating such interference) or try to wrap this thing in aluminum foil, I’d like to hear from other users on here about their experiences. Who here has experienced GPS issues/interferrence with Navio2? What did you do to alleviate/fix?