I've recently purchased two MT3329s from DIY Drones and have been testing them using an Arduino Uno and TinyGPS. Using the TinyGPS test code, I'm able to get good position and time data, but velocity shows up as invalid and the date shows up as 00/00/2000. This is the same for both modules I have. I was able to get velocity data before using a Venus GPS module. Does anyone know why this might be happening?