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Tips and questions relating to the GPS modules from SFE
By jonnyl888
Hi There,

I've connected a 20Hz Venus GPS ( to an Arduino Mega, but it does not seem to give any valid data.

I'm using an Arudino Mega, so have connected it directly to a hardware serial port. The GND, 3.3v and TX RX pins are connected to the Arduino. I'm using a generic GPS antenna (1575.42MHz), with the TinyGPS library. However my number of satellites is showing as 255 and speed as 1000000000.0kmh/h. I've used the simple_test example code but not getting anything form the GPS.

I've tried sending byte mac[] = { 0xA0,0xA1,0x00,0x03,0x0E,0x14,0x00,CS,0x0D,0x0A }; to the GPS and it accepts it and sends data back at 20Hz, but the data is all useless.

Sorry I'm still learning, so excuse the lack of technical terms.

Any help is much appreciated.


By Valen
Where did you get that simple_test example code from? I can't find any arduino example code on the product page.

Also, how is that antenna used? I hope it has free view/line of sight to the sky. And not used inside the house.