GPS EM-406-A
#1
Posted 17 October 2011 - 02:41 AM
#2
Posted 17 October 2011 - 05:41 AM
#3
Posted 17 October 2011 - 06:00 AM
I would also like to log a voltage in using the analog inputs, but I can't seem to make this work either.
I connected a 1.5v AA battery positive to GPIO_PIN_A0 and negative to ground and get random numbers. I also connected the 3.3v supply pin to GPIO_PIN_A0 and get the number 1023 and I'm not sure what this is.
Thanks,
Alex,
So I just read that 1023 is because the analog inputs are 10bit adc, 10^2 = 1024 - 1. So do I just interpolate? 0v = 0, 3.3v = 1023. If this is true, I just multiple the input value by 0.003.
Alex,
#4
Posted 17 October 2011 - 01:15 PM
#5
Posted 18 October 2011 - 02:13 AM
Just about nothing you do on the GPS till have any effect on how it locks. You just need to make sure it's in an area with a clear view to the sky and it should pick up fix.
A solder jumper is a pair or 2 pads that can be shorted together with a small drop of solder. These can sometimes be used for configuration settings and such.
Hello Chris
Thank you for your feedback, I went ahead and tried to go out to an open area with and waited 45 minutes and still no lock.
Is it posible that the GPS is broken?
Alex,
#6
Posted 28 December 2013 - 02:22 PM
Hi Alex,
Did you ever resolve the above? I am currently experiencing the same problem...
Many thanks,
Rich.
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