arduino mega ethernet shield tft display quotation

If it is the official Arduino Ethernet Shield, you can probably fit a 6-way IDC ribbon connector onto the 3x2 male pins at the back of your display and then attach the wires to digital#51, 52, 53 on the Mega2560. I would solder the ribbon wires onto some real male header. This will give a good electrical connection to the MEGA2560 female header.

As you have realised, no one can really help unless you say which 7" TFT and which pins it uses. Are they in conflict with the Ethernet Shield"s pin usage?

My idea is to use only one SDCard, de Ethernet Sd card would be the one to use for everithing. So the question is how to connect (by wiring) the TFT to the arduino board, and know if i have to make any changes on tft configuration to disable de microsd to not cause any conflict with the microsd ethernet card.

arduino mega ethernet shield tft display quotation

When I try adding any code for the SD card (card inserted into the Ethernet shield slot), it initializes the SD card, but can"t find the Ethernet shield. If I remove the SD card, it obviously can"t find it, but the ethernet shield works.

I suspect this has something to do with the various chip selects. Some posts say the ethernet CS is on pin 10, others refer to 53 for MEGA. I tried both, no luck.

arduino mega ethernet shield tft display quotation

Information Station (Arduino): Welcome to my latest instructable to build a self contained information station! This awesome device uses an Arduino Uno with an ethernet shield t…

arduino mega ethernet shield tft display quotation

This article describes the use of the Deek Robot design for an ethernet card. This design uses a 74HCT08 to ensure that the levels on MISO and Interrupt fully meet the spec of the 5V Arduino, but there are considerations:

2) The buffered signal on MISO cannot also be connected to another shield (such as a CF shield) because it is permanently actively driven by the HCT08.

3) The “\INTPT” output of the ENC28J60 is buffered to Arduino Digital Pin 2 for use with INT0. This digital pin cannot be used by anything else and MUST be set as an input.

2) If another MISO must be interfaced, connect it to pin 5 or 4 of the 74HCT08, not to the pin on Arduino. The ’08 will then buffer both signals. THIS IS VERY DELICATE!

Second: I am using it and after a few hours the device stops sending data to another server I have. kind of a buffer overflow at the ethernet card, just a feeling. I restarted it and it does fine for a few hours more, then the same.

First thing to check of course if both Arduino and PC have the right IP address (fixed?). An IP address is required since we’re working over a network, even if it’s just a cable from the ENC28J60 to your computer.

For example, I’ve downloaded the ethercard zip, opened Arduino 1.5.6-r2 and imported the unzipped folder library. After restarting the IDE, I select any Ethercard example, but it doesn’t compile**

I have been using the EtherCard library a while and wanted to switch to the UIPethernet library but could not make it work. I suspected the reason to be in different pinning connection but till I found this article have not had any luck finding the pin-connection used by UIPethernet.

I have used ethernet and arduino for maybe 4 years now. It’s quite simple to pull a web link lIke google.com into the arduino, but more complex links seem to be too difficult to get around. I’ve already forgotten the steps that need to be taken to obtain the ip address for “google.com”, but once I’ve sort of re-learned that process, I’d like to be able to pull in other Web pages, like: http://www.marinetraffic.com/en/ais/details/ships/538005277/vessel:BOW_CONDOR

I picked up an ethernet board today. I’ll try to tweak the “web page reading” files a bit. The second group of code above has a line: client.print ….. sometimes syntax has, sort of, a beginning quotation mark after the GET in that client.print statement (or so I thought). But it’s been so long since I’ve tried to dig into this stuff. I probably should know this syntax, but I don’t really. I have to travel for work, so if I don’t reply for like 3 weeks, or whatever, I’ll try to be back here at a later date once I get more time off from work. I may check back here for like the next 2 or 3 days, but then I have to go back to work for like 16 days. I’ll be back here sometime.

I have recently bought a MEGA 2560 to replace my UNO – primarily due to the UNOs limited memory. The EN28J60 board works fine with UIPethernet but when I hook it up to the MEGA using the same pins as on the UNO it does not work. I have a TFT touchscreen with SD cardreader attached to the MEGA but I don’t believe there could be bus-/dataconflicts.

Thus I added pin 10 as SS for the SD card reader, set it as output and HIGH, waited 5 ms before communicating on the SPI bus with the Ethernet board and it worked.

Unfortunately, I do not have my equipment with me (I’m traveling), but I did find some articles that might help (I did a Google search on “arduino parse html form”):

Iam also using an rfid reader and arduino mega adk with ethernet shield connected to a raspberrypi (lamp server). I had build a local access control system for 1 door but now ive added 2 more doors and the verification of rfid tags needs to be more centralized.

Did u had any luck with the parsing of http form ? Iam thinking from the arduino mega a http get request via php and then in the page returned a string compare of the scanned id tag with the ones returned from mysql (allowed ones).

I think if u had any luck with ur project it will give me a boost. Iam also looking of MySQL Connector/Arduino http://drcharlesbell.blogspot.gr/2013/10/introducing-mysql-connectorarduino-100.html

As for the MySQL connector: for a Uno this library might be too big, not leaving much space for other code. A Mega should be able to work with it though.

Its very interesting project and i enjoy working on it. I have ID20LA RFID Reader and also u need a breakout board. The reader is working without any problem for many months. I also bought a typical electric strike (12V DC) connected with a 5V excitation DC relay from digital pins of arduino (important: not directly cause the excitation of the coil can return current back to arduino and destroy the board).

You’re also correct i started the project with a uno rev3/poe ethernet shield and the code without using mysql connector was about 29k of 32k that uno has. The mysql connector needs at least 15k.. so last week i bought arduino mega adk and port my existing code there.

I want to make it work using http

get and parse the results for my UNO, but also using QUERY_POP from arduino mysql connector for mega. I have a local xampp setup for easy testing (a mysql database called door1 with a table tag and columns id, name, event_date) so iam in the phase of trials and errors :D

The Arduino Data Push article get’s you started with passing info to the server (MySQL), you’ll just need to combine it with receiving an answer from the server

I am using Wireshark to sniff the computer ethernet interface, and when I try to connect to the arduino, loaded with any of the examples, like TcpServer, all I see is the ARP request for the ip I gave to the arduino board, but no answer. I guess is due to my board, everybody else seems to be enjoying the code. Is there anything to change anywhere to make it work with arduino mega boards? Thanks!

I have this board http://www.dx.com/p/ethernet-shield-v1-1-for-arduino-66908 which stacks on top of the Mega board. The problem was as said by Robert the different pins used for SPI, but also because on Mega pin 13 goes to control an onboard LED. So, I cut the DI/O pin 13, correctly connected pins (10, 11, 12, 13) to (53, 51, 50, 52) without changing anything else, it worked smothly.

Thank You for Your answer. I check it and contains print() function (not println()). However this is other library and is not connected to UIPEthernet.

Netbeans is much more complex to setup to work. However I use it to build program and then load it by AVR-ISP to boards made by me (and using same MCU as Arduino). This is not possible by Arduino IDE (as I think).

My project works well with EtherCard Library. But now I ‘m trying to use UIPEthernet library by your recommendation with no success. Where can I change the CS pin? I can’t find it!

I’m planning the automation of my home:solar power, alarm, watering garden, lights and so on. A problem is length of wires. SO my idea its to have distributed arduinos with Ethernet shields, so its necessary that these mini-modules works as client-server. They can be able to receive instructions as”turn kitchen ligth ON” or say to the server “window opened -> fire alarm”

LEDs not blinking on the RJ45 can mean issues with the network cable, but since you had it working with an Arduino Uno, I think we can rule that one out.

I haven’t tried the Arduino Nano yet, but as far as I recall from the comments, is that pin 53 is intended for the Arduino Mega. I assume you made a typo.

Power could be an issue, but if the same power supply was used as with the Arduino Uno, then I would think it’s adequate for the Arduino Nano as well.

I would think the ENC28J60 should be nano compatible. I’ve used it with an Arduino Uno R3 and Nano and Uno seem the same (expect the Nano has 2 more analog ports it seems) – see Arduino board comparison chart. According to the info on the Arduino website, the Uno and Nano use exactly the same pins for SPI. Same power requirements/levels, same microprocessor, same memory, same clock …

Thanks for this article, I was trying to run your Nano v1 Ethernet module with an Arduino Nano v3 and did not work … everything was so simple with the explanation of “Not the same driver WIZnet 5100 with ENC28J60” and download the libraries everything worked. thanks for the info.

One maybe helpful post I found at Github (Can arduino_uip work with ATmega644 – I know it “sounds” irrelevant, read through the conversation there and you’ll see they are talking about changing particular pins in the library code).

After reading this article I decided to do some tests with the various libraries listed here. My personal take is that Ethercard by far wins on performance and flexibility. UIPEthernet suffers from multiple problems, including hangs.

2) Does the first Arduino library mentioned (ETHER_28J60.cpp) implement a TCP/IP stack? I know the EtherCard uses the tuxgraphics tcp/ip stack, and that uipEthernet uses Adam Dunkels famous uip stack. (Incidentally ibex has lots of great open source projects, including a tcp/ip stack for the enc28j60 : http://www.embedded-code.com/source-code/communications/ethernet-tcp-ip/ethernet-tcpip-driver )

5) Do you have any thoughts on the Lantronix Xport (ethernet <-> uart) modules? Do they work the same as the enc28j60 but use rs232 instead of spi? I’ve seen some videos for it and it seems to work without any extra code on the embedded side! Not sure though.

I want to connect a ENC28J60 ethernet to my GBoard Pro (Itead) with GSM. I need it to be able to plug a IP Camera to the Ethernet, and that it uses GSM to send n Picture Taken to the FTP server.

C:\Program Files (x86)\Arduino\libraries\etherShield/ip_arp_udp_tcp.h:32:77: error: ISO C++ forbids declaration of ‘progmem_s’ with no type [-fpermissive]

C:\Program Files (x86)\Arduino\libraries\etherShield/etherShield.h:34:76: error: ISO C++ forbids declaration of ‘progmem_s’ with no type [-fpermissive]

I need to use enc28j60 and NRF24l01+ via SPI, but there are some problems in libraries. I found many comments on Arduino forums about this but it was two years ago. First solution is to use Mirf library, but it’s less convenient than standard RF24 library. If anyone could help or can point me to important things about this please tell me about. Thanks!

I am trying to make this work with Arduino Mega 2560 and ENC28j60 using the UIPEthernet library (latest release and/or forks) to run one of the Arduino Shield examples (“Web_Params”), replacing relevant includes with “#include ”. The problem I am facing happens during compilation, here is a bit of a stack trace I get:

Webduino is considered to be a great high-level library (e.g. for creating RESTful APIs) and is listed on the official Arduino page. You might find it useful. Although it does not support the ENC28J60 chips, that’s why you need a wrapper such as UIPEthernet to make it work. I read this article where author mentions using them both (I am going to post this question there too):

A quick glance on the articles you’re referring to, gave me the impression that the code was written to try several ethernet/wifi modules. Maybe the author overlooked this, or … an older/newer version of UIPEthernet changed.

/Users/john/Documents/Arduino/libraries/UIPEthernet/utility/Enc28J60Network.h:99:8: warning: #warning “Not defined ENC28J60_CONTROL_CS. Use borad default SS pin setting. You can configure in ‘utility/Enc28J60Network.h’.” [-Wcpp]

/Users/john/Documents/Arduino/libraries/UIPEthernet/utility/logging.h:24:2: warning: #warning “You can configure LogObject and ACTLOGLEVEL in ‘utility/logging.h’. More verbosity more memory usage.” [-Wcpp]

Second point, you wrote “I opened Enc28J60Network.h file and tried to add my ethernet chip“, it is not custom to edit library files – unless you really know what you’re doing. So please do not edit library files – you’ll have to do everything in your sketch, and should never have to edit any of the library files. To undo your changes, unless you know exactly what line you modified, please reinstall UIPEthernet. While you’re at it, consider downloading the latest version from Github.

3. My arduino ide is uploading the code but nothing happens on the serial monitor (baud is set accordingly) or in browser ( i looked in my router software to see if any new ip connected to my local lan)

/var/folders/bd/pzwcmknd3bd_c10t4kwkq_hc0000gn/T/arduino_modified_sketch_641225/HelloWorld.pde:28:41: warning: deprecated conversion from string constant to "char*" [-Wwrite-strings]

by the best of my knowledge, Ping depends on the library implementation since the hardware is super limited when it comes to the stack implementation (hence it’s lower price tag I assume). Not sure if the UIPEthernet library even supports this (even though I’ve found it to be one of the best out there for the ENC2860).

The library DOWNLOAD – ETHER_28J60 and Ethershield doesn’t work. Already at the first compiler run an error occurs the a function in not correct declared :

Did you properly install the Arduino IDE (you did not mention the platform you’re running – eg. Windows/Mac/Linux)? Running it from your Downloads directory may cause issues. Another issue is that the library is old and no longer maintained; “prog_char” is no longer used, it is now “const char *progmem_s” – Consider using UIPEthernet as it may be the better choice.

Result: It drops done to 2.2V at my “China Arduino Nano” if I connect the shield. Therefore I used an original Italian one. Result: 3.08V which should be in the range of the 28J60 Chip

Do to the fact, that the shield still doesn’ t work with the 3.08V, I swapped the shield. Now this shield is working fine with the library UIP-Ethernet. But in contrast the Ethercard library doesn’t work, although I used Pin 8 for Chip-Select.

Glad you gad something to work – yeah the voltage difference can be a pain, especially with clone Arduino’s (there are more problems with some of the clones).

If I’d be doing something with networking, I may consider starting with one of those ESP8266 boards (on it’s own, and not as a shield for an Arduino).

I replaced the shield, that means the left one on your figure 2. With this, I can also use the small library “Ethercard” without problems. This shield has an voltage regulator which supplies the ENC28J60 Chip with 3.3V from a 5V input. Now for me I have to work on the EMC protection of the Arduinio circuit, because I use it to control and configure a radio transmitter.

Configuration: Arduino Nano clone + ENC28J60 Ethernet Shield for Arduino Nano 3.0 RJ45 Webserver Module (V1.0) + Nano I/O Sensor Shield Modul for Arduino UNO R3 Nano V3.0

Problems accured, when I wanted to use the D2 for a digital input with interrupts. As there were no schematics for the ENC28J60 Ethernet Shield, it took me some time to find out, that the D2 is used as interrupt-line for the Ethernet Shield. Even if it is not used, it pulls the level to High.

hello…:)…i am newer to arduino ..and i want to do a project with em18 reader and hr911105a 18/20 ethernet using arduino nano…i have done with my code…when i put card on em18 reader it sends to the server but always response false but against the card no i have code the ok response…please help me….

I’m not familiar with the “hr911105a 18/20”, but if you’d like to see an example on how to pull or push data with the shield used in this article, then please check out these articles:

Im settup a remote way of reading voltage and current via ethernet using Nano Every and Deek Robot ethernet shield ( ENC28J60) and the UIPEthernet library.

After lost of strugling and swearing (I’m totally new to Arduino’s!!) I’ve eventually go it to act as a web server buy disconnecting pins D8 and D10 between the 2 and taking pin 8 from the Nano Every to pin 10 on the shield.

The shield sits below the Nano so all pins are connected through and what I’ve done is bend Nano pins 8 and 10 out at 90 deg so they don’t plug in. Then a jumper from Nano Every pin D8 to D10 on the shield and that works.

I have found reference in posts about the other library’s (that are no longer supported!) for this shield about being able to change the CS pin on the NANO to suit the shield but can find nothing for the UIPEthernet library!

Trying to find an answer, I did find this post on the GitHub page of UIPEthernet. It’s a little messy, but it seems that there may be a trick that could work for you.

After installing and looking at the files: in the directory for the UIPEthernet library, there is a subdirectory called “utility” which holds the file “Enc28J60Network.h“.

I’m not sure if this will work (never tried it on an Arduino) and we may have to glue and “if” around it, for cases where SPI_CS wasn’t defined to begin with (but then the simple “#define SPI_CS 8” would have worked right away). This could look something like this:

Being unable to dig into it at the moment (about to walk out of the door), but before calling Ethernet.begin(), you may be able to call Ethernet.init(PIN);.

Well the good news is that worked and I’ve now got the shield on top of the Nano Every with all pins connected and even a I2C display connected and everything works….

arduino mega ethernet shield tft display quotation

Then I had a radical thought, as mentioned in my previous post: Don"t use a buffer at all. I thought I might just parse the HTML as it streamed into the Arduino.

arduino mega ethernet shield tft display quotation

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arduino mega ethernet shield tft display quotation

I successfully manage to get ethernet shield and TFT shield to work individually. Then since TFT shield will not be able to use the ICSP interface I connected the jumpers as it says on wiki.

After this I put everything together and try to get them working with the below code but for some reason I don"t know, Ethernet shield stopped working. I get the error Ethernet shield was not found. Sorry, can"t run without hardware. :(. Even though the error, my TFT screen lights up and runs demo. Probably I"m missing something simple. I"ll appreciate any help or guidance.

arduino mega ethernet shield tft display quotation

No offense David, but I still don"t see the benefit of using an Uno. Best case scenario, I get it to work with the Uno.. but that still doesn"t help me move forward with my project. Personally, I would rather order a display I know will work with the mega, than have another board collecting dust.

I uploaded Touch_shield_kbv unmodified to Mega, and the screen turns white. Serial data shows the information I posted earlier. The Megas have no problem operating SD,RTC, and ethernet on other shields. I have also used temperature/humidity sensors with no issue. I have not encountered any "board specific" coding issues in my 2 years of playing with these boards.

To me it seems that there is a communication issue between the Mega and the shield. It"s most likely a pin issue, which is what I"m asking for help with.

This morning I downloaded the newest Arduino IDE 1.6.8 (I was using 1.6.6 previously). Since I am on a mac, I can right click and "show package contents". This allows me to add libraries directly to the Arduino IDE. I added Adafruit-GFX-Library, Mcufriend_kbv, and touchscreen. There are no additional libraries other than the ones that come stock with the IDE. I reuploaded Touch_shield_kbv without modifying any files, and still get only the white screen on the Mega.

arduino mega ethernet shield tft display quotation

ok so i own a arduino mega 2560 with a 3.2 tft touch screen and LCD shield, recently just bought a Ethernet shield and connected to the mega and ended up with a white screen... if i remove the Ethernet shield, then the tft will display like normal... any idea why i am getting this white screen when the Ethernet shield is plugged in?

i haven"t defined the Ethernet shield but i don"t think it matters as the tft is all connected together as a stack anyways, So even if the Ethernet is not being used... wouldn"t the tft still displays?

arduino mega ethernet shield tft display quotation

The Seeeduino V2.4 Ethernet shield can be used to provide your projects with internet connectivity. The shield features the W5200 Ethernet controller to support up to eight simulatneous TCP/UDP connections. The shield also has a microSD card slot to support projects which require storing large amounts of data for Internet of Things (IoT) applications. The RJ45 port (Where the Ethernet cable is connected to) is low enough to allow you to stack more shields on top of this one if needed.

W5200 Ethernet controller: This chip is what makes the TCP/IP communication possible. The SPI pins MOSI, MISO, SCK, and CS/SS of this chip are connected to digital pins 11, 12, 13, and 10 respectively.

I2C and UART grove connectors: The UART connector is connected to digital pin 0 and 1 for RX and TX respectively. The I2C connector is connected to Analog pins 5 and 4 (bottom right of the siheld) for SCL and SDA as well as the pins SCL and SDA (top left of the shield).

The Ethernet shield uses digital pins 11, 12, 13, 10, and 4 for SPI communication with the W5200 Ethernet controller and SD card. Therefore, the shield is compatible with any other shield that does not use pins 10, and 4 in this regard.

The library for this Ethernet shield"s is the same as the Arduino"s Ethernet library with the difference that we have replaced the W5100.h/cpp and socket.h/cpp files and references with versions that work with the newer W5200 controller which is what our shield has.

In addition to the various examples/applications we provide in this WiKi you may check out the Arduino"s "Ethernet library" reference page for a detail description of the classes and functions the library offers.

As described in the "Overview" section of this WiKi, the Seeeduino Ethernet shield incorporates a microSD card port for storage/data intensive projects. The shield uses the SPI port to communicate with the microSD and is therefore compatible with the Arduino"s SD card library on pin 4 for chip select (CS).

The code below is the basic code needed to connect to an internet router or access point. The access point will automatically assign an IP address to Ethernet shield upon connection.

In the Arduino code we will create a server on port 80 (commonly used for HTTP), and when you visit the shield"s IP address on a web browser/client (e.g. Google Chrome, Firefox, Internet Explorer, Safari) the shield will respond back to the browser with a webpage.

When you visit any website or IP address from a web browser the browser sends an HTTP Request to the server (in this case the Ethernet shield). The HTTP Request can vary by browser but a typical request looks like this:

Note:Notice that each of the request"s line ends with the two characters "\r\n", commonly known as carriage return (CR) and line feed (LN) respectively. We can use this to our advantage, in the Arduino code we will look for this pattern to know when the browser is done sending this information.

This is the HTTP reply we"ll send back from the Arduino to the web browser. You now know a little about HTTP request and are ready to get started serving webpages from your shield!

The Ethernet shield can be used not only to serve webpages but also receive information from them. In this example we will create a webpage with some buttons that will be used to toggle the Arduino"s digital pins, we will connect some LEDs so you can see the toggling in action.

// The .get functions sends and HTTP GET request to the IP address of the shield with the parameter "pin" and value "p", then executes the function alert

Open the serial monitor window and wait for the shield to respond with it"s assigned IP address. Now open your web browser and visit that IP address, a website like the one below should display:

A web client can be used to send and receive information from a web server, the Ethernet shield can be used as a client and we"ll show you how in this example. We"ll use an application programming interface (API) provided by OpenWeatherMap to request weather data from any city in the world. The way the OpenWeatherMap API works is you send the city name and country to their webserver and they reply back with weather data for that city.

For this example we"ll be requesting weather information for San Francisco, U.S. The HTTP request we have to send from the Arduino through the internet shield will have to look like this:

You can actually see the result our Ethernet shield will receive from api.openweathermap.org when it sends the HTTP request above by visiting this URL http://api.openweathermap.org/data/2.5/weather?q=San%20Francisco,ca

In the Arduino code we will extract the values of the "description" string, "Sky is Clear"; "temp", 286.75 (in Kelvins); and "humidity", 69 (in %RH). To extract these values all we have to do is use the find(xxx) function where xxx will be the characters before the values we are trying to extract, we will then continue reading the remaining values using read() until we have read all the values. The way we know when we have read all the values is by reading in a for loop until the character " " ", ",", and "," for description, temperature, and humidity respectively have been found.

We"ve made a native Android app you can use to send HTTP data from a phone to the Ethernet shield. This app will send a pin number, depending on which button you press, to the Ethernet shield. When the Arduino gets the pin number it will toggle that pin and send the state of the pin back to the phone.

The code you need to upload to the Arduino is the one used in "Example 3: Control The Arduino"s Digital Pins From a Webpage Served by The Shield" of this WiKi page. The circuit is also the same.

The Ethernet shield can have a concurrent connection with another device to be able to send and receive data. In this example we"ll show you how to use the shield to create a chat service. The chat service will send data from the Arudino"s serial communication terminal to another PC/client"s terminal (you can use the same PC you use for your Arduino if you like).

When a client"s terminal sends data to the Arduino:If this is the first time print "We have a new client" in the Arduino"s terminal, and print "Hello, client!" to the client.

Upload the code below to your Arduino board and open the Arduino"s serial communication terminal, the shield"s IP address should be printed. Also do not close the Arduino"s serial comm. window.

Open RealTerm and enter the Ethernet shield"s IP address and port as shown in the image below, then click the "Open" button. The "Connected" square should be green to signal a successful connection to the Arduino"s terminal.

In RealTerm go to the "Send" tab, enter the text you would like to send to the Arduino"s terminal followed by "\r\n" and press the "SendASCII" button. You can also send messages from the Arduino"s terminal to the client"s terminal (RealTerm). The images below show a chat example"s ouput:

The microSD card slot is connected to the Arduino"s SPI port with the CS line on digital pin 4. This means that the shield is compatible with the Arduino"s default SD card library and you can find numerous examples for it online.

We do provide an example you can use in our library, the example will write the Arduino"s analog pin values on the SD card as well as display them on a webpage.

Now open the Arduino Serial monitor window and in a web browser visit the Ethernet shield"s IP address, the analog pin values should be displayed and updated on the browser and will also be written to the SD card.

The important thing to keep in mind while using both the SD card and Ethernet functions of the shield is to deselect the SD card when using the Ethernet function

We can make some great applications by combining the Ethernet shield with others. The application we"re going to make here is an internet connected weather forecast station, you will be able to see any city"s weather for the day in a touch screen.

We"ll obtain San Francisco, US" weather information the same way we did in "Example 4: Request Weather Information From Any City in The World (Shield as Web Client)", that is using the OpenWeatherMap API which we will then display on the touch shield.

In addition to the Ethernet shield"s software libraries we"ll make use of touch shield"s libraries which you can download from the "Resources" section in this wiki.

The weather data for San Francisco, U.S. should be displayed on the TFT touch shield and update every 10 seconds, the first time it might take a while (1 minute) since the Ethernet shield is initializing.

arduino mega ethernet shield tft display quotation

Once the data is collected, the specific data desired is parsed out of the HTTP code and API output. Then the data is written to an LCD display. A color display is important as the U.S. EPA has specific colors for specific air quality levels:

So the display should be clear seen from a distance using the EPA colors what the status is. For a 24 bit (3 byte RGB) color display, the color values specified above can be sent. I tried to use two other displays: a large touchscreen (conflicted with the Ethernet SPI control) and a display shield (I probably have a wiring issue with it) so I jumped to a trusty display I have written about used with the Arduino Esplora. The problem is it is discontinued and it is only 16 bit color. SO I had to tweak the Adafruit driver library code to compile under the Arduino IDE Version 1.6.x and to use 16 bit colors. I have tried to get similar colors but I suggest you select colors that you find are closest to the colors above. If you can find a color picker for 16 bits, place a comment below.

I"ll admit the code is not as elegant as that in many of my Adafruit tutorials. I had to change displays late in the project. And I did not use a GPS shield to keep the project simple but that does not help in portability. Also I"ve selected the US service with a link to other countries" air quality services. Each will probably have their own data format which will require the correct code to parse the data, that has not been done here except for the US formatting.

arduino mega ethernet shield tft display quotation

Arduino Ethernet Shield is a easy way to connect your Arduino UNO boards to internet. This Ethernet shield is based on Wiznet W5100 chip which provides network (IP) stack capable of both TCP and UDP. This W5100 based Shield supports up to four simultaneous socket connections. Use Arduino Ethernet Library to write sketches which connects your Arduino boards to the Internet using RJ45 cable via this shield. This latest version Ethernet shield has on board micro-SD card slot, which can be used to store files for serving over the network. This latest Ethernet shield is compatible with Arduino UNO and MEGA boards using the Ethernet library and micro-SD is accessible by using SD library. This Ethernet shield also includes a reset controller, to ensure that the W5100 Ethernet shield is properly reset on power up. The reset button the shield resets both the W5100 shield and Arduino board. The Ethernet shield and micro-SD slot both uses same SPI bus for communication with the Arduino board, only one can be active at a time, this can be handled in your program.

arduino mega ethernet shield tft display quotation

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