I hav tried connecting through serial communication. But i hav a problem with that. I think AT commands can be also given through I2C communication. But I am getting stuck at some point. Can anyone help with step by step instructions to make a connection? thank you
You need mainly 3 pins to connect Arduino Uno and GSM Modem.
RxD
TxD
GND
This Tutorial will clear all your doubt about hardware connection and also about Arduino sketch you have write.
Related
I want to connect my arduino nano with my ESP-32 (in order to use it for wireless communications).
I got this ESP board (see pic).
Any idea how I can connect it? I can't find any documentation for the pin on this board.
Check this,
https://www.espressif.com/en/products/hardware/esp32/resources
You can directly use ESP32 to perform the same functions of arduino.
I am working on Toradex VF-50 SoM using the evaluation board. I have a quectel M10 Modem. The modem is connected to the board using gpio pins and not on the serial port. There are many solutions available for configuring the modem over the serial port. But i need to configure and use the modem over the gpio pins. I have connected the Rx(36),Tx(38),Gnd,Vcc and 5v with the gpio. Now i need a sample code on how to configure and send AT commands over this modem. The os in the SoM is WinCE6. I need to develop the code is Visual Studio 2008. please help...
I do not recommend connecting a modem to GPIOs which do not have UART functionality! This makes your SW unnecessary complex and you load the CPU with work which could be done more efficient by the UART HW.
The Toradex Colibri VF50 has many pins with UART functionality, you can use the Pinout designer to find a good solution for you.
In case there are some good reasons you have to use other pins you can use the GPIOLibary for an easy way to program the GPIOs. It comes with code samples:
http://developer.toradex.com/software/windows-embedded-compact/toradex-ce-libraries-and-code-samples
I don't have a link but I guess there is sample code how to emulate/bit bang a serial port.
First, do I need 2 Arduino Unos with ESP8266 module installed to communicate with each other?
I want to transmit ultrasonic value from 1 Arduino Uno to another. Thank you for answering my question.
There is no need of an Arduino to comunicate 2 ESP8266 modules. Maybe you can read that ultrasonic value with the ESP and send it to another or to the internet. Check this tutorial maybe will be useful.
I'm in a situation and need some advice.
Scenario 1:
Arduino Uno/Genuino +
ICOMSAT SIM900 Module(http://www.itead.cc/icomsat.html)
(placed the jumpers such that Digital Pin 2 is rx and 3 is TX on the shield)
Code Used: The send receive SMS example code in the arduino website.(
(https://www.arduino.cc/en/Tutorial/GSMExamplesReceiveSMS)
Everything Works fine without a glitch.
Scenario 2:
Arduino Uno/genuino +
GSM breakout board(https://www.google.co.in/search?q=sim900A&espv=2&biw=1600&bih=717&source=lnms&tbm=isch&sa=X&ved=0CAYQ_AUoAWoVChMIqd748qb8yAIVYXumCh2s2Aaq#tbm=isch&q=sim900a+gsm+module&imgdii=9zJcFQBaoLAKzM%3A%3B9zJcFQBaoLAKzM%3A%3B7eDw6qGc3qZjMM%3A&imgrc=9zJcFQBaoLAKzM%3A)
Had loads of issues with softwareSeial.h library and ended up cross connecting the default on board rx/tx with GSM board's RX/TX and everything worked fine. (though I didn't liked the fact that everytime during programming I had to change connections to upload a sketch)
code used is from here (http://www.theengineeringprojects.com/2014/06/send-sms-with-arduino-uno-and-sim900d-using-at-commands.html)
Now my Problem:
Since the shields are very costly, I decided to settle on the cheaper boards for my project. But the Code used for the GSM shield was so easy to understand (since the library was doing all the heavy lifting) I tried to use that. I connected Rx of GSM board to pin 3 and TX to pin 2 of arduino and uploaded the same code I used for the GSM shield scenario. But the code won'r work, I tried to tinker a few blocking things like the enable pin code where the shield is brought up etc. but no luck. Can anyone put some light on it, has this been tried before, is it not supposed to work the was i want it to ?
Thanks a lot in advance.
I started to experimenting with the Arduino Ethernet shield and got it working with not much effort. However, when I try to debug through the hardware serial port of the board, I get nothing, and though the program still runs, and I know it should be giving me something, it doesn't. Truth be told, I haven't got a clue of what's going on. How do I fix this problem?
P.S. I am using one of the example sketches included in the Arduino IDE.
The Ethernet shield does not use the RX and TX pins (0,1) and I have personally used Serial communication with the shield before.
So it definitely had to do with your code. Can you post your code?
Also have you connected anything to digital pins 0 and 1?
The Arduino Ethernet board is not equivalent to Arduino Uno + Etherent shield. In the Arduino Ethernet board the USB-to-serial chip is not present.
From the official Arduino Ethernet board page
The Ethernet differs from other boards in that it does not have an
onboard USB-to-serial driver chip, but has a Wiznet Ethernet
interface.
So I don't think you can print any values in the serial monitor.
Update:
You need an external FTDI adapter like http://arduino.cc/en/Main/USBSerial get the serial communication between Arduino and your computer to work.