mamech
Full Member level 3
hello
I am not sure that this is the right forum, but I will post my problem here.
I bought a GSM/GPRS EFCom Pro , it is based on SIM900 module.
I have read that it needs 800 mA of current to correct properly, I tried it with a 5.7 volts adaptor that can supply upto 800 mA, then I followed it by a voltage regulator 7805 to produce voltage around 5 volts (I measured the voltage after regulator using multimeter, and I found that it was around 4.5 volts ).
I found that the GSM/GPRS module starts, but can not connect to internet. it keeps flashing without ability to use the sim card to connect.
when I replaced the supply by another 12 volts 2 A supply, and followed it also by a voltage regulator , the GSM/GPRS module could conncet properly!
does this mean that this module needs 2A supply?? is not this too big value ??
thanks
I am not sure that this is the right forum, but I will post my problem here.
I bought a GSM/GPRS EFCom Pro , it is based on SIM900 module.
I have read that it needs 800 mA of current to correct properly, I tried it with a 5.7 volts adaptor that can supply upto 800 mA, then I followed it by a voltage regulator 7805 to produce voltage around 5 volts (I measured the voltage after regulator using multimeter, and I found that it was around 4.5 volts ).
I found that the GSM/GPRS module starts, but can not connect to internet. it keeps flashing without ability to use the sim card to connect.
when I replaced the supply by another 12 volts 2 A supply, and followed it also by a voltage regulator , the GSM/GPRS module could conncet properly!
does this mean that this module needs 2A supply?? is not this too big value ??
thanks