GPS module's light doesn't turn on, no response
Denise Mak
Posts: 3
Hi,
I've set up the breadboard-friendly GPS receiver module by connecting GND to Vss, VCC to Vdd, and SIO to P15 as instructed, and when I attempt to run the sample code in GPSDemoV1.1.BS2, the indicator light doesn't even turn on or blink, and I get "Error: No response from GPS Receiver Module". This happens whether or not I pull the /RAW input to high.
I am using a Basic Stamp HomeWork Board, revision D with a serial connection, and powering it with a 9V battery. I seem to remember seeing another post about a 9V battery not being the right power source - if not, then what sort of battery should I use?
I've attached a picture of my wiring in case that's the problem. In the picture I have /RAW pulled high by attaching it to P10 (I added a HIGH 10 instruction·to the beginning of·the code sample).· And SIO is connected to P15.
Thanks,
Denise
I've set up the breadboard-friendly GPS receiver module by connecting GND to Vss, VCC to Vdd, and SIO to P15 as instructed, and when I attempt to run the sample code in GPSDemoV1.1.BS2, the indicator light doesn't even turn on or blink, and I get "Error: No response from GPS Receiver Module". This happens whether or not I pull the /RAW input to high.
I am using a Basic Stamp HomeWork Board, revision D with a serial connection, and powering it with a 9V battery. I seem to remember seeing another post about a 9V battery not being the right power source - if not, then what sort of battery should I use?
I've attached a picture of my wiring in case that's the problem. In the picture I have /RAW pulled high by attaching it to P10 (I added a HIGH 10 instruction·to the beginning of·the code sample).· And SIO is connected to P15.
Thanks,
Denise
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Comments
I just now plugged that same GPS into those same Vdd and Vss connections on my homework board, and attached a 9V battery, and the red light starts blinking right away.
Why don't you try it with _only_ the two power connections? If the light isn't blinking, the program sure isn't going to work.
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Leon Heller
Amateur radio callsign: G1HSM
That's true on some GPS's, but on the Parallax GPS's, (Polstar), the LED blinks when less than 3 (4?) satellites have been aquired, then turns solid when valid data is being received.
Jim
Denise, glad it worked out. The connections looked good to me. If you want to use Smart Mode, you don't have to connect the /RAW to anything, it has an internal pullup.