yousafzai82
Member level 4
Hi all
Please comment if i am doing something wrong.
I am not working with SIM900d for the first time. I have pretty knowledge of it. Everything is according to your recommendation in you hd_design_manual for SIM900d v1.03. All i need is to get 30uA current when i just apply 3.6V to VBAT and ground. The module should be shut down.
I am only using VBAT, Ground, Antenna pin, Rx,Tx (with 4.7K Ohm pull ups to 3V), four pins for SIM interface and PWRKEY.
As i provide 3.6V to VBAT pin. The meter shows 5mA to 10mA current continuously even if i don't ground PWRKEY for 2 seconds. I mean the module is shut down and it is taking so much current.
After sending AT+CFUN=0, i the circuit is consuming 2mA current, which is according to manufacturer specifications. That means i am running the circuit properly. But actually i am interested to get not more 50uA when the GSM part is totally off. That part is no working and consuming 5 to 10mA varying current.
Please comment if i am doing something wrong.
I am not working with SIM900d for the first time. I have pretty knowledge of it. Everything is according to your recommendation in you hd_design_manual for SIM900d v1.03. All i need is to get 30uA current when i just apply 3.6V to VBAT and ground. The module should be shut down.
I am only using VBAT, Ground, Antenna pin, Rx,Tx (with 4.7K Ohm pull ups to 3V), four pins for SIM interface and PWRKEY.
As i provide 3.6V to VBAT pin. The meter shows 5mA to 10mA current continuously even if i don't ground PWRKEY for 2 seconds. I mean the module is shut down and it is taking so much current.
After sending AT+CFUN=0, i the circuit is consuming 2mA current, which is according to manufacturer specifications. That means i am running the circuit properly. But actually i am interested to get not more 50uA when the GSM part is totally off. That part is no working and consuming 5 to 10mA varying current.
