Hi all,
I am using SIM908 modem. I have some issue with SIMCARD. I connect LED to pin NETLIGHT (SIM908)
After power on SIM908 modem, I saw this LED blink. SIM908 seem ran. But Voltage on SIM_VDD pin: 0V. BUt as follow SIM908's datasheet, voltage on this pin:1.8V or 3.3V.
I can explain that.
Pls, help me.
Thank you very much,
Hi diepvu,
Could you tell me how did you solve this problem, i had the same problem with SIM900 some time ago and couldnt solve it (went back to sim548)
Thanks
Rod
Hi diepvu,
Could you tell me how did you solve this problem, i had the same problem with SIM900 some time ago and couldnt solve it (went back to sim548)
Thanks
Rod
Hi Rodrigo.
I'm using a Cell Battery from Nokia, 3.7V at VBAT pin, when the SIM Card is on VBAT pin at 3.6V...
Do you think that i have to change this battery??
If you can please contact me by private msg to talk in our native language
HI.
Problem solved! No need extra power... Only have to add a 4700uF capacitor near to VBAT pin. SIM908 working good...
For now, anyone has an example of use to send commands to a HTTP server?
Thanks a Lot!
HI.
Problem solved! No need extra power... Only have to add a 4700uF capacitor near to VBAT pin. SIM908 working good...
For now, anyone has an example of use to send commands to a HTTP server?
Thanks a Lot!
HI.
Problem solved! No need extra power... Only have to add a 4700uF capacitor near to VBAT pin. SIM908 working good...
For now, anyone has an example of use to send commands to a HTTP server?
Thanks a Lot!
HI.
Problem solved! No need extra power... Only have to add a 4700uF capacitor near to VBAT pin. SIM908 working good...
For now, anyone has an example of use to send commands to a HTTP server?
Thanks a Lot!
https://www.edaboard.com/attachments/82161d1351656747-sim548c-gsm.jpg
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