So I had my Pi setup and running perfectly fine for about 3 weeks. All the sudden it would no longer connect to the networks. Either connected o my network at home to stream, or the connect directly to my computer or tablet over wifi.
I have formatted and reflashed my sd card with no prevail.
Any ideas why this is happening?
Thanks,
Dustin
Not sure.
But, if reflashing doesn’t work, it sounds like it might be a network issue or (unlikely) RPi3 issue.
Are you using the recommended EDIMAX WiFi dongle? Or just onboard WiFi?
Do you remember changing anything after it was working fine?
I do not recall changing anything. I am using a TP Link module but it worked before which is why I am confused. I am not at all educated on the pi other than how to flash firmware on an sd card. So I am not sure if there is something I need to do to the pi or if the wifi card is burnt out or what? 
After months of perfect use I’m suddenly experiencing the same issue but on a Pi Zero.
I’ve replaced the wi-fi module, usb dongles and re-flashed the original SD card along with a new one using the latest 1.0 build. Everything seems to work… I get a steady green light but wi-fi never shows up.
At this point I’m guessing it’s probably the Pi itself.
@Dustin_Fickert: If I were to take a wild guess, I would say the problem is your TP Link module.
Are you able to get a Edimax Dongle?
It sounds like the problem is with the TP link module OR potentially the network.
RPi3 itself is quite robust…
@Rob: We have done zero testing on the zero (pardon the pun), so I am surprised that it worked for so long considering that it doesn’t have much resources.
It could be the Pi Zero and/or the WiFi module…
Repetier-Host can experience a similar issue w/ WiFi if the host network drops and it can’t immediately reconnect. In their case, if it fails to reconnect, their script deletes the WPA passphrase. The “fix” in their case is to comment out the part of their script that removes the pwd. It then keeps attempting to reconnect w/ the original password.
Perhaps AstroPi has a similar function?
We actually had something similar by which our software automatically deleted the network info when an attempt to connect failed. However that caused more problems than it solved. It completely deleted valid networks during temporary poor connectivity situations so we removed that functionality.
In release 0.10(8) we implemented a little “stored networks manager” which is accesible via settings. The user can go in (via the hotspot or ethernet connection), see all stored networks and delete the one whose password was changed so that the settings can be entered again.