Print

Please login or register.
1 Hour 1 Day 1 Week 1 Month Forever
Login with username, password and session length

[alefbe]

Hi,

I am a hobbyist and recently bought from an Italian reseller an EM406A module ( S.N. 0019917). I am planning to use the module with an Arduino UNO board that is also providing the 5 V for power. I tested the board with a couple of programs and everything works fine: the module gets a fix, the LED starts blinking and I am able to read the NMEA messages on my PC. What apparently does not work is the 1PPS pulse out of pin 6. I was expecting a pulse between 2 to 3V every second , as soon as the module got the fix, but this is not so. If I connect an oscilloscope between pin 6 and ground I only see  very weak (around 270 mV) RANDOM pulses. Am I doing something wrong?

[GS_TECH01]

Just a couple of questions about this:

What is the firmware version? To determine this, please refer to the forum posting: http://www.usglobalsat.com/forum/index.php?topic=3514.msg8979#msg8979
Also, can you please provide specs/datasheet about the Arduino UNO board?

[alefbe]

Hi,

thank you for your quick reply. Just to let you know that I have solved the "problem" with the 1 PPS pin.
The gps works fine, it was my fault: I was mis-using the oscilloscope (I am not an expert in electronics).
With the help of a friend I was able to check the pulse and both the voltage and the timings are ok.
Thanks again.

[GS_TECH01]

Good to hear that you got it to work! And, thanks for the update.

Just feel free to ask if you have any questions.