Coolterm problem with Arduino GPS/GSM shield
felix1912 2014-09-23 12:48:54 5562 Views7 Replies Hi Guys,
i'm fairly new to the Arduino, but i ordered the dfrobot GSM/GPS shield.
I use an external power supply and the LEDs blink the way they should (64/3000).
But here's my problem: When i try to communicate with the shield using either coolterm or the IDE serial monitor, i cant even write a prompt in the message box. It just stays completely blank. I also used "send string" with no results.
I used the first script on the dfrobot wiki page. my OS is Win8 and i'm using the Arduino Uno.
Thanks in advance for your help.
i'm fairly new to the Arduino, but i ordered the dfrobot GSM/GPS shield.
I use an external power supply and the LEDs blink the way they should (64/3000).
But here's my problem: When i try to communicate with the shield using either coolterm or the IDE serial monitor, i cant even write a prompt in the message box. It just stays completely blank. I also used "send string" with no results.
I used the first script on the dfrobot wiki page. my OS is Win8 and i'm using the Arduino Uno.
Thanks in advance for your help.
2014-09-27 06:06:50 Hi guys,
i changed the usb port and somehow it started working.
Thanks for your support. felix1912
i changed the usb port and somehow it started working.
Thanks for your support.
felix1912 2014-09-25 18:54:54 Hi Felix,
I prefer Arduino IDE Serial monitor.
Did you watch any information like
“+CFUN
+CPIN
GPS ready
Call ready”
Do you have a power adapter? I am not sure whether it caused by the power supply. You know AA battery has its output current limit.
Maybe you can test "Send a message from arduino board"
[url=https://www.dfrobot.com/wiki/index.php/GPS/GPRS/GSM_Module_V3.0_(SKU:TEL0051)#How_to_Send_a_message_2]https://www.dfrobot.com/wiki/index.php/GPS/GPRS/GSM_Module_V3.0_(SKU:TEL0051)#How_to_Send_a_message_2[/url]
Turn the switch S2 Arduino side. And check whether it is working.
Grey.CC
I prefer Arduino IDE Serial monitor.
Did you watch any information like
“+CFUN
+CPIN
GPS ready
Call ready”
Do you have a power adapter? I am not sure whether it caused by the power supply. You know AA battery has its output current limit.
Maybe you can test "Send a message from arduino board"
[url=https://www.dfrobot.com/wiki/index.php/GPS/GPRS/GSM_Module_V3.0_(SKU:TEL0051)#How_to_Send_a_message_2]https://www.dfrobot.com/wiki/index.php/GPS/GPRS/GSM_Module_V3.0_(SKU:TEL0051)#How_to_Send_a_message_2[/url]
Turn the switch S2 Arduino side. And check whether it is working.
Grey.CC 2014-09-25 09:46:18 Today, i tried out every baudrate that is available in the coolterm options. Still no result.
I'm using the UNO, and i resetted it every time. Im using 6x 1,5 V batteries so there shouldnt be a problem. The switches are set to the places you told me. The status of the NET Led blinks every 3 seconds so i think the communication inside the module is working fine. In addition, coolterm's status is "connected".
I just cant make the module/arduino communicate with me through coolterm, and i can't even enter a text in the coolterm window.
Do you think the problem might be in the code that i found in the wiki? Its he first example code felix1912
I'm using the UNO, and i resetted it every time. Im using 6x 1,5 V batteries so there shouldnt be a problem. The switches are set to the places you told me. The status of the NET Led blinks every 3 seconds so i think the communication inside the module is working fine. In addition, coolterm's status is "connected".
I just cant make the module/arduino communicate with me through coolterm, and i can't even enter a text in the coolterm window.
Do you think the problem might be in the code that i found in the wiki? Its he first example code
felix1912 2014-09-24 18:37:56 Hello Felix,
Which board you are using now? UNO? or Leonardo?
What is the voltage of your external power supply? It should be more than 7V.
Did you turn the switch to the right place?
S1 COMM
S2 USB
Uart Middle
And what is the status of NET led. You know , if you are using UNO, once you open the Serial monitor, it will reset the module. You have to press reset again to wake it up. Grey.CC
Which board you are using now? UNO? or Leonardo?
What is the voltage of your external power supply? It should be more than 7V.
Did you turn the switch to the right place?
S1 COMM
S2 USB
Uart Middle
And what is the status of NET led. You know , if you are using UNO, once you open the Serial monitor, it will reset the module. You have to press reset again to wake it up.
Grey.CC 2014-09-23 22:56:01 Thank you for your reply.
I used both the serial monitor and coolterm, but none of them displayed anything in the window.
I could connect to it on coolterm but as i said: i couldnt write in the window.
The baudrate was set to 9600 and i didnt change it. Do i have to set it it a different value?
felix1912
I used both the serial monitor and coolterm, but none of them displayed anything in the window.
I could connect to it on coolterm but as i said: i couldnt write in the window.
The baudrate was set to 9600 and i didnt change it. Do i have to set it it a different value?
felix1912 2014-09-23 18:47:24 Welcome felix,
Is it OK with Arduino IDE Serial monitor or coolterm? Which software are you using now?
Did you change the baudrate? Grey.CC
Is it OK with Arduino IDE Serial monitor or coolterm? Which software are you using now?
Did you change the baudrate?
Grey.CC 