SIM800H gprs shield problem with AT commands
Account cancelled 2016-04-19 02:26:04 2142 Views1 Replies Hi
I have a SIM800H GPRS shiels and I don't known how can I connected it to PC via USB. When i connecing it to PC via USB the module still sending some strings via USB. I try to send AT commands and it is no effects, I want send some AT command via USB to module. How i can it do?
1. power on
2. Boot by 2 sec
3. module search net
4. nodule was found net
5. module still sending some string via usb (what's the usb setting? - baud, mode). I can't send AT command
Ted
I have a SIM800H GPRS shiels and I don't known how can I connected it to PC via USB. When i connecing it to PC via USB the module still sending some strings via USB. I try to send AT commands and it is no effects, I want send some AT command via USB to module. How i can it do?
1. power on
2. Boot by 2 sec
3. module search net
4. nodule was found net
5. module still sending some string via usb (what's the usb setting? - baud, mode). I can't send AT command
Ted
2016-04-19 22:45:16 Hi
Please make sure you did the flowing preparations:
1. Insert SIM800H module onto Arduino UNO or any other Arduino board;
2. Connect UNO with computer through USB cable
3. Connect UNO power jack with an external power supply, 6-12V @ >500mA.
4. Set the switch to USB.
After you did the all above steps, you can use the following two ways to boot SIM800H:
1. Press the button boot for 2 seconds
2. Upload the sketch below.
void setup(){
pinMode(12,OUTPUT); //Set pin 12 as output
digitalWrite(12,HIGH); //GSM power on sequence
delay(2000);
digitalWrite(12,LOW);
}
void loop(){
}
In the end, choose the right board and serial port at Arduino IDE menu bar. Open the serial monitor or other Serial Assistant software. Choose "Both NL & CR". Wait for the NET led to blink as finding net, then you could send some AT commands. Wendy.Hu
Please make sure you did the flowing preparations:
1. Insert SIM800H module onto Arduino UNO or any other Arduino board;
2. Connect UNO with computer through USB cable
3. Connect UNO power jack with an external power supply, 6-12V @ >500mA.
4. Set the switch to USB.
After you did the all above steps, you can use the following two ways to boot SIM800H:
1. Press the button boot for 2 seconds
2. Upload the sketch below.
void setup(){
pinMode(12,OUTPUT); //Set pin 12 as output
digitalWrite(12,HIGH); //GSM power on sequence
delay(2000);
digitalWrite(12,LOW);
}
void loop(){
}
In the end, choose the right board and serial port at Arduino IDE menu bar. Open the serial monitor or other Serial Assistant software. Choose "Both NL & CR". Wait for the NET led to blink as finding net, then you could send some AT commands.
Wendy.Hu 