I am wondering wether a raspberry pi 4 official 15w plug (v5.1 3A), is suffice for the FlightAware pro+ stick Setup below?
The reason I am asking this is that, I am having Occasional warning about MLAT that the local clock is unstable. From doing some research I hear it may be the usb bus not supplying enough power or the CPU can’t handle it.
Currently the Temp of my cpu is about 38c and usage is only at 6%.
I have the latest Piaware 3.8.0 installed which has implemented the support for the PI 4.
Currently I have the following hooked up to the PI 4:
I can tell you that i am running a Raspberry 4B with the offical Raspberry Power supply.
Connected is the blue FA pro plus stick and installed since a few days Piaware 3.8.0 as addon to Debian Buster. Before that 3.7.2 was working on it.
Connected is the device via WiFi to my network.
Issues: none
(beside intermittent network disconnects every now and then. workaround is a small script that checks network connection to my router every 2 minutes and restarts interface.)
Using a RaspberryPi 4 for PiAware is a simple non stress task for this Pi model.
My Pi Zero runs at around 46c with around 60% CPU (not sure if these figures are normal) but it runs 24/7 and is currently showing 300 days plus uninterrupted use.
@bashar0151
This can be anything from a faulty Dongle to USB overload(if other USB devices are used) to electrical noise.
You can try putting the dongle and/or RPI in a metal case, adding ferrite chokes to the USB power cable and USB pigtails(if used) or just trying another power supply.
CPU load of the dump1090 process the last seven days. The device has nothing else to do.
An Rpi4 with 4 GB might be a little overkill for tracking flights only
And the temperature (located outside in a partially isolated box with an active fan running at 3.3V).
The first few days after purchase it was indoor for testing (not on that graph) but never had temperatures >55°C.
I think the question regarding Firmware has been fixed with the models sold now.
Can you recheck that the altitude is set correctly?
I believe FA wants an altitude above the ground on your stats page via the cog wheel.
Also make sure you are using the correct unit, not sure if the page asks for feet or meters.
Also make sure you zoom in really far if you set up your location via the marker.
Otherwise use 5 decimal digits for latitude and longitude.
Could you specify the product name?
Looking at your stats, the outdoor antenna has helped quite a bit, which is expected.
MLAT also goes out of sync if you see less than around 3 ADS-B aircraft with good reception i would say.
That’s correct I have a the FlightAware pro+ stick, one thing I have forgot to mention I own a few different sdr sticks and I get the same error. One of the others are new. I have tried different e-tickets and get the same issue.
I hardly get mlat planes as you mentioned, please find a link to my skyward dashboard below:
You won’t find MLAT planes that often, FAA mandated the use of ADS-B out starting with Jan 1, 2020, for most of the aircraft.
Only small craft, flying low, (GA) is allowed to stay as they were, but since the prices of ADS-B equipment dropped, I see more and more GA with ADS-B (or UAT in some cases).
