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I have wired my ESP-12E and my GPS according to the wiring provided in this link.

However, no GPS led turned on or blinked. Additionnally to powering the GPS directly with the 3.3V supplied by the ESP, I also tried powering the GPS with a 5V power supply but nothing changed.

Could someone confirm that, as nothing turns on, it is probably a hardware issue? In other words, should a led turn on or blink if the GPS module is powered (even if the TX and RX are not connected)?

EDIT: I also followed this link and wired the GPS module to my Raspberry Pi, put it outside but got nothing too.

EDIT: below is what I could finally get (only twice) by running `sudo cat /dev/ttyAMA0':

 pi@raspberrypi:~ $ sudo cat /dev/ttyAMA0 
$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50

$GPTXT,01,01,02,HW  UBX-G60xx  00040007 FF7FFFFFp*53

$GPTXT,01,01,02,ROM CORE 7.03 (45969) Mar 17 2011 16:18:34*59

$GPTXT,01,01,02,ANTSUPE$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50

$GPTXT,01,01,02,HW  UBX-G60xx  00040007 FF7FFFFFp*53

$GPTXT,01,01,02,ROM CORE 7.03 (45969) Mar 17 20�$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50

$GPTXT,01,01,02,HW  UBX-G60xx  00040007 FF7FFFFFp*53

$GPTXT,01,01,02,ROM CORE 7.03 (45969) Mar 17 2011 16:18:34*59

$GPTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*20

$GPTXT,01,01,02,ANTSTATUS=DONTKNOW*33

$GPRMC,,V,,,,,,,,,,N*53

$GPVTG,,,,,,,,,N*30

$GPGGA,,,,,,0,00,99.99,,,,,,*48

$GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30

$GPGSV,1,1,00*79

$GPGLL,,,,,,V,N*64

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPRMC,,V,,,,,,,,,,N*53

$GPVTG,,,,,,,,,N*30

$GPGGA,,,,,,0,00,99.99,,,,,,*48

$GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30

$GPGSV,1,1,00*79

$GPGLL,,,,,,V,N*64

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,02,ANTSTATUS=INIT*25

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

$GPTXT,01,01,01,NMEA unknown msg*58

and

pi@raspberrypi:~ $ sudo cat /dev/ttyAMA0 
$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50

$GPTXT,01,01,02,HW  UBX-G60xx  00040007 FF7FFFFFp*53

�$GPTXT,01,01,02,u-blox ag - www.u-blox.com*50

$GPTXT,01,01,02,HW  UBX-G60xx  00040007 FF7FFFFFp*53

$GPTXT,01,01,02,ROM CORE 7.03 (45969) Mar 17 2011 16:18:34*59

$GPTXT,01,01,02,ANTSUPERV=AC SD PDoS SR*20

$GPTXT,01,01,02,ANTSTATUS=DONTKNOW*33

$GPRMC,,V,,,,,,,,,,N*53

$GPVTG,,,,,,,,,N*30

$GPGGA,,,,,,0,00,99.99,,,,,,*48

$GPGSA,A,1,,,,,,,,,,,,,99.99,99.99,99.99*30

$GPGSV,1,1,00*79

$GPGLL,,,,,,V,N*64
7
  • The Neo 6M GPS module needs a few minutes outside with a good view of the sky for its first position fix. The LED starts blinking as soon as it has a fix and even when TX and RX are not connected, as far as I can recall. Also make sure the NodeMCU's RX is connected to the 6M's TX (and vice versa). – StarCat Jun 26 '20 at 20:31
  • So if I just connect VCC and GND, without TX and RX connected, put the GPS module outside and wait for blinking? No led (whatever its color) should turn on as soon as the GPS is powered on in order to indicate that the module is powered? – floflo29 Jun 26 '20 at 20:54
  • I have connected the GPS module to a 5v power supply, and let it outside for more than an hour but still nothing. I think the module is damaged. – floflo29 Jun 27 '20 at 11:50
  • It might be. When you connected to your Raspberry Pi, did you see any incoming data from the GPS module to the RPi serial port as show in the link you gave (by running sudo cat /dev/ttyAMA0) You can do that even before the LED is blinking. It should show some NMEA data coming from your GPS indicating which satellites are visible and that it is trying to acquire a position fix. – StarCat Jun 27 '20 at 12:04
  • I finally got something cat /dev/ttyAMA0 while plugging out then in the antenna and playing with the wires to ensure there is no bad contact. I have edited my first post with the terminal output. – floflo29 Jun 27 '20 at 15:46

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