How to connect this QUECTEL M26 GSM- SKYLAB SKG12A GPS module


#1

Hello Ravi,
i have a gps tracker, based on QUECTEL M26 gsm module which is integrated with a SKYLAB SKG12A.
I am not able to connect it (neither to pc via given usb port nor to arduino uno).
red led designated for gsm & green led designated for gps blink intermittently.
when called at sim inserted in module it always says switched off.
All i need is to establish the communication between device & pc directly or through arduino.
i have referred the m26 datasheet to understand the usb pinouts but no luck.
pls help me resolving this.
i have attached the pcb pics for your consideration.!

Best Regds
Sandeep


#2

i even tried tx rx vcc gnd pins of module as indicated in datasheet but it didnt work.
pc says usb device not recognized.

regds

sandeep


#3

Have you given 4V,2A capable power supply to the device?


#4

Dear Ravi,

Thanks for your time.
Yes,It was connected to 12 v 7ah battery.
It has in built 4v 350 mah li-po battery also for backup.
Could you pls suggest me how to connect it to pc via usb cable,do i need to use a TTL to usb converter?
Vcc,Tx,Rx,Gnd pins are identified as per M26 datasheet.
Whenever i try to connect pc always says usb device not recognised.
Pls help.

Best Regds
Sandeep Singh


#5

It might be missing some drivers. For me SIM5320 did like this. I installed drivers and it worked.


#6

which drivers should i use???


#7

The drivers that came with Quectel software.