Xadow GSM+BLE Power On/OFF

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atulbothe
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Xadow GSM+BLE Power On/OFF

Post by atulbothe » Thu Feb 18, 2016 9:19 am

Hello,

I have recently got the Xadow GSM+BLE and connected USB. I have installed "MTK USB Port". I see red light, but I am unable to power it ON. After pressing power key for 2 seconds it does not show GREEN light.

Am I missing something? Do I need external power supply, if yes, what's the easiest way to do that?

Thanks,
Atul

jinyuan.weng
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Re: Xadow GSM+BLE Power On/OFF

Post by jinyuan.weng » Thu Feb 18, 2016 11:00 am

Hi, did you forgot to connect the battery?

getmemot
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Re: Xadow GSM+BLE Power On/OFF

Post by getmemot » Tue Feb 23, 2016 12:52 am

You need to have a battery connected to it.

if you dont have a battery that fits into the connect you can you the through holes
PIN 3 = VCC
PIN 6 = GND

davidnoesunperro
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Re: Xadow GSM+BLE Power On/OFF

Post by davidnoesunperro » Wed Feb 24, 2016 7:53 pm

The only way without battery, is throught the VCC & GND pins.
I've tried with only USB / no batt and got same result.
Best regards,
David.

atulbothe
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Re: Xadow GSM+BLE Power On/OFF

Post by atulbothe » Thu Mar 03, 2016 10:27 am

Thank you all for reply.

I was able to connect it using VCC & GND pins. However when I put a SIM card, it does detect the SIM card (I can see it in debug logs) but the module reboots and goes into Mass Storage mode automatically after 2-3 seconds.

If I remove the SIM card, it works perfectly fine. I have connected BLE+GSM module using power regulator [Please see the attached photo] and I have set the voltage to 4.2v (Infact I tried to vary it from 3.3 to 4.2 to see if this works, but none of that is working.

Can someone please help? I am blocked on this.

Thanks,
Atul

dbelam
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Re: Xadow GSM+BLE Power On/OFF

Post by dbelam » Thu Mar 03, 2016 3:49 pm

Try to connect to VBAT instead of VCC - it will be totally like a battery, but don't forget to set voltage to 4.2V - so the rephone won't try to charge it :)

atulbothe
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Re: Xadow GSM+BLE Power On/OFF

Post by atulbothe » Thu Mar 03, 2016 5:22 pm

Thanks for your reply.

I don't have a battery right now, is there a way that I can use VCC and make it work atleast for now?

Thanks,
Atul

jinyuan.weng
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Re: Xadow GSM+BLE Power On/OFF

Post by jinyuan.weng » Fri Mar 04, 2016 4:58 pm

Hi,
is it possible the supply instantaneous current is not enough for GSM register network when insert a SIM card?

atulbothe
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Re: Xadow GSM+BLE Power On/OFF

Post by atulbothe » Fri Mar 04, 2016 5:32 pm

Quite possible, but I am unable to figure out how to proceed further :(

Thanks,
Atul

getmemot
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Re: Xadow GSM+BLE Power On/OFF

Post by getmemot » Sat Mar 05, 2016 3:00 am

Current i have my battery connected to the VCC and GND pin and it works fine for me and it also charges the battery.

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