I'm a arduino newbie, I would like to build an web project for my thesis.
I use arduino uno as microcontroller, DHT11 for temperature sensor and Enc28j60 for the ethernet shield.
The project is used to control LED and monitor the temperature and humidity through a website.
I want to set arduino as client.
I want to simulate this project in LAN mode.
I want to ask:
1. how to set arduino as client?
2. how to receive the temperature data from the arduino and store it to the database(mysql)?
3. how to control led via website?
I had tried arduino as server, and it is succeed.
But I confuse how to set it as client
thank you,
anyone can help me?
You could set up a web server on the computer, and have the Arduino make a GET or POST request to a script (e.g. PHP) on the server that saves values to the database. You could also get the server to return a value that indicates whether the LED should be on or off. More details are found in the Arduino help: http://arduino.cc/en/Reference/EthernetClient
To get the LED to respond quickly in this setup would require the Arduino to continuously poll the script however, which doesn't seem ideal. Why do you want the Arduino to be the client?
because I need to store the temperature data to the database. If I set arduino as a server. I dont know how to store the data to the database. I still dont understand about to control my lamp if i set the arduino as webclient
Related
I have a little project that includes connecting EPS8266 to the internet and send an API POST request from the data that is passed from my Arduino Uno. Until now, both module works perfectly fine separately (ESP8266 has succeeded connecting to WiFi and Arduino Uno can get the data from somewhere). Now the problem is how will Arduino Uno send the data to ESP8266 so that ESP8266 can make an API POST request as I mention above to send the data. I'm using UNO+WiFi R3 ATmega328P+ESP8266, 32Mb flash, USB-TTL CH340G, Micro-USB chip and by following this tutorial, I know that I have to enable dips number 1 and 2. But by doing so, I will not get the printout that I purposely tell it to (for debugging purpose). I have also watched an Indonesian YouTube video that shows me how to upload the code for both modules (but not for debugging purpose), but I noticed it has more actions than the tutorial gave me, I will just post the actions below:
Translations(I know it's self-explaining, but just in case): Koneksi = connection, Komunikasi = communication
From the image above, I saw that there is a way to debug EPS8266 and Arduino Uno's communication, which is enabling dips number 1, 2, 3, and 4. But when I tried it, the data was not sent, which makes me wondering if the trouble lies on the communication between EPS8266 and Arduino Uno, or enabled dips number is wrong for getting the printout. Is there any way of debugging whether my sent data has been received properly?(This is more important since I need to make sure that my data is the correct data) Or is there a way to just debugging whether the communication succeeds?
My code is really simple, just using Serial.write(something) on my Arduino Uno and Serial.get() on my EPS8266 and both written on my loop() method, not setup(). I also used 9600 baud rates on my Arduino Uno and 115200 baud rates on my ESP8266 (I of course have also tried changing the baud rates to check if there was a printout).
After uploading to your sketch to ESP8266 by switching ON dips 5,6 & 7
Just flip the dip number 7 to OFF.
Open your "Serial Monitor" in Arduino IDE,
Select the correct baud rate, then press the reset button on your Arduino.
You will be able to see your debug messages in your Arduino IDE "Serial Monitor".
Hope this helps.
I'am working on an IOT project. The goal is to communicate between two openmotes (one is the server and one is the client). When the client receives some data, it is supposed to pass it to an arduino to activate different controllers (like a motor, some leds ...). So, I wanna send data from a openmote to an arduino. The idea is to use a bus. The openmote is the master and the arduino is the slave. Do you have any idea how to do this ? I can't find any documentation fro the open mote part. I thought about using the serial UART but i don't have any idea how to do that.
Thank you !
If anyone is looking for an answer, it is possible to activate the UART 1 on the open mote and to send data to the arduino using that bus. You have to pay attention to the speed you are using on both sides.You can refer to this file to see the functions to use: https://github.com/contiki-os/contiki/blob/master/examples/cc2538-common/test-uart.c
Firstly, I'll just give you a brief introduction about our project... its "Speech controlled Home Automation System" where we are controlling the Home appliances by the voice or speech commands. We're successfully done with the voice recognition module. But our problem is with achieving the communication between the transmitter {where the user gives the voice command} and receiver {where the home appliances are present} through WiFi i.e. we have got 2 ESP8266 12E modules interfaced with Arduino both at the transmitter and receiver side and these two WiFi modules need to be communicated(To interchange some data sent by Arduinos).So please let us know which Arduino code need to be used at transmitter side wifi module and at Receiver side wifi module and also about the header files or additional softwares(if any)to be used.
you can achieve this by starting one of wifi modules in Access Point Mode and the other one has to be set to Station Mode in order to connect to the first one.
In case you want to add a router, just set both ESP8266 modules to Station Mode and connect them to the router.
And then transfer any data you want through AT commands of ESP8266.
Here is the refrence to them.
https://room-15.github.io/blog/2015/03/26/esp8266-at-command-reference/
If you are newbie to Esp8266 and Arduino , this will help you.
http://www.teomaragakis.com/hardware/electronics/how-to-connect-an-esp8266-to-an-arduino-uno/
Good Luck !
I worked on a similar system a year ago. I was developing a remote controlled toy. My main difference was I used the ESP8266 without an Arduino attached.
One ESP worked as a a WiFi hotspot and the other connected to it, sending messages through UDP.
For some reason, I could not get the two ESP modules to connect (I think it was a problem with the board I had), but I sent messages from my computer, and it worked out fine. I will not burden you with all of the code, but here is the GitHub link.
All that needs to happen is they will be on the same WiFi network, and then you can use the ESP8266 WiFi library to send messages between the two. Like I said above, I used UDP, which is good for high speed, with no error checking. But there is also TCP (higher up, has error checking code), or you can use the server/client part of the library to set up a full web server and read/write data to it. Without knowing what type of data, I cannot comment on what would be the best method.
As for headers, you will need WiFi.h, and if you are using UDP you will need WiFiUdp.h
You should not need any external software besides the Arduino IDE.
I taught myself from scratch for this product, using two main resources: the Arduino library reference, and the docs on the ESP8266 Arduino GitHub page
I have some sensors connected to my ardunio uno and get periodically data from that sensors now I wanted to send that data to cloud.
I dont have any idea about how should I connect my arduino to Internet using GSM. How should I solve this problem or any alternative is there.
Just get an appropriate shield (like this one) and follow the documents included with it. The linked shield includes some basic service plan as part of the purchase. Once connected, it's just like using any other TCP/IP application.
The ArduinoIDE writes firmware to my Arduino UNO but I want to handle logic and code outside the microcontroller on the computer with the microcontroller strictly being a sensor and the computer handling the logic.
How can I have the computer handle the logic and listen to sensors (output data to a computer) and respond (input commands to the board)?
Is this done with serials? How do I get started with this?
I know how to code, I just need help understanding how to get the hardware to talk to one another. Arduino to computer, computer to arduino.
For example, I have a thermal sensor on the board, how can I have bi-directional communication where the output of temperature would go to a program on my computer and respond to the board to turn on an LED or other command based on statements on the computer.
All help is appreciated.
There is a tutorial on arduino.cc how to read a sensor on arduino en display the values in processing.
There is also a tutorial to turn on a led with a command from a pc.
If you want to do real complicated things I suggest that you take a look at Firmata