Instructables
Picture of WEBSD
touch (3).JPG
TempLedButton (3).JPG
This is a development board for the PIC24F series of microchip, with:
  • USB ( plug it to any computer)
  • Ethernet ( plug it to the internet)
  • SD card ( save and read all data you will need)
I developed this thing as a learning platform, it worked ( still is). So if you always want to go a step further in microcontrollers as i want, it's a nice way of doing it . The problem i had is that microchip examples are for their development board, which i don't have access. So i developed my one board and examples, and i saved all the steps so it would be easier to someone to get started.Going from a simple ping to a webpage with ajax.

 A video showing the project:

 
 (Obs:the page is no longer available, iT consumes some power and a port on my  router.)
 
Just to give a head start see some of the things i have done so far with this board:
  1. An Touch keyboard, usable as a standard USB keyboard.
  2. A Video Game ( pong and snake games) , with TV output, and connection to a PC Keyboard ( the old PS/2 ) for control.
  3. Picture frame,  reads pictures form the SD card and show them on the TV.
  4. Controling a 5 volt LCD and some leds, with just 3 wires ( the MCU is 3.3V)
  5. Web server, where you can see some status of the board as temperature, the position of a Pot and a Button,  control some leds and the LCD ( all this from the internet)
  And the things i know before i started ( just a checklist): It all started when i saw this project:

web-server-on-a-business-card-part-2 ( thank you HACKADAY)

The idea of controlling something trought the internet was really nice, so i bought the chip. But when i was delivered classes started. One Year later, i started to read a promising book:

Programming 16-Bit PIC Microcontrollers in C: Learning to Fly the PIC 24 

I was the 24F, i started right away. Breadboard, wire-mess, and the first programs were running. But as i advanced in the book i felt the need for a PCB. Hackaday project was my base, but i wanted i little bit more. An USB connector, and some pins fore expansions.The WEBSD board was born.

After I developed some extra boards to plug. If i want to do a new thing with the board, just design a simple expansion board. 

Follow the next pages to see more about the project. Project files are annexed on this page.

Arthur Benemann 2011 Brasil
 
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Puxa se eu tivesse lido esse artigo antes teria poupado um baita tempo no aprendizado incial da TCP Stack da Microchip. Felizmente , após 5 dias martelando , consegui fazer um pequeno protótipo rodar corretamente usando um PIC24HJ256GP210. Obrigado pelo esforço e por espalhar o conhecimento.
mcujun2 years ago
I test your firware HTTP But compile error.Why ?
cho22 years ago
Arthur, seu trabalho é realmente impressionante! Eu também sou aluno de graduação em eng elétrica e estou muito motivado a, pelo menos, reproduzir esse seu trabalho, porém estou encontrando algumas dificuldades quanto à gravação dos códigos... será que eu poderia trocar alguns e-mails com você a fim de saná-las? Desde já obrigado e mais uma vez parabéns!
xPIOLx3 years ago
Muito bom trabalho, sem duvida !
Fico feliz que um trabalho tão bom quanto esse tenha sido feito por um brasileiro, isso é muito motivador !
Parabens !
arthurb (author)  xPIOLx3 years ago
De uma olhada neste outro projeto: http://www.instructables.com/id/picChess/

E um projeto novinho está saindo do forno...
Arthur, gostaria do seu e-mail ou alguma forma de contato pois estou projetando uma placa de desenvolvimento tambem com o 24f e gostaria de alguma ajuda e se possivel troca de informaçoes... Meu e-mail é diogenes_viegas@hotmail.com
caso queria me mandar uma forma de contato para o meu e-mail serei grato.
Obrigado
Very nice project, keep the good work
But i have one question , i made also this project but what is your power supply more or less then 20V? and what is your working voltage on your board? 3.3V or less?

Because i tryed 12V suplly but did not work.

But keep on the good work :)
arthurb (author)  pascalbianca3 years ago
You made the board? Cool. It's a 5V DC input, The processor runs at 3v3, but some of the other plug-in boards need the 5 volts. I use one of those wall brink power supply with a 7805 to get the 5v.
rcmelick3 years ago
Grande projeto!
Muitas possibilidades de uso, como apoio a servidores em caso de estar offline e até automotivo para saber staus do veiculo e localização com autilização de um GPS.
Abraços.
MAJP3 years ago
Great Job Arthur! I would love to see the webpage for this, but cannot access it. Is it still up and running?
arthurb (author)  MAJP3 years ago
Thanks, the webpage is offline( as commented under the video). But if you download the projects files in "...\firmware\10 - Ethernet LCD\Webpages" you can open it.
arthurb (author) 3 years ago
Hi, i started monitoring the WEBSD board with Google Analytics, anyone knows how share the info? The page view counter on the webpage it's lying a bit, it resets every time the board is reseted. ( ex: when i reprogram it)
km777 arthurb3 years ago
use different concept send IP: over USART to PC there log it
into TXT file - you can log in HTTPd format and use later web/apache tools from sourceforge

or log data to SD keep on mind you have to log with "append"
never do incerement variables becouse HTTP request are paralell and incerementing you can damage accuracy

simply log only IP in binary form for example 4bytes
and number of visitors is filesize (div) 4(sizeof IP)

FATfs statistics.log (IP 20.130.57.103)
020130057103(chr(\r\n)) = 14chars per line ( 14 is better for DIViding)

filesize/14=num_lines = hits later you can use unix/cygwin GNU tools
sort -nr | uniq > visitors -> GeoIP produce country list :)

Nice NIce Project I wish have same with AVR but not Arduino :p
ATmega644P

Dont worry about you english its better then my. but I see problem with lighting in you room video its too Dark. Nextime change the LightBulb ;)

robonerd3 years ago
Your project is absolutely AMAZING! Pure genius. Just so you know, your english is better than most native speakers of the language! Again, this is fascinating! Could you do an instructible on how to make and wire the USB connection?
; - )
arthurb (author)  robonerd3 years ago
Thanks, I'm glad you liked. I don't understand what you mean by how to wire the USB connection, there is nothing new there just a standard min-b USB cable.
thanks for your reply. i make my own arduinos, and I cant figure out how to make the usb connection with an ftdi chip. you know how to do this by any chance? is that how you connect your board? with ftdi? right now i use a ft232 to usb to connect to my boards, but its external.... i have to wire it to my board to upload sketches. id love to just have the chip on the boards i make instead. i want to make my own. the ft232 is $15! and i cant pay this for each board.
arthurb (author)  robonerd3 years ago
i have not played with a FTDI chip yet. The board uses the USB peripheral of the PIC24F micro.
Well Done!!! Dude plz tell me the name of theb ook u read to study about Ethernet and USB protocol in PIC24F series
arthurb (author)  taruntanuj0073 years ago
The book is "learning to fly the pic24f", but it's about the 24F series not USB and Ethernet. USB and Ethernet you can learn with the microchip exemples, help files, and this project .
Parabens muito bom, é bom ver projetos brasileiros aqui no instructables.
Sem Duvida! Parabens mesmo Arthur muito bom o trabalho. Sempre considerei que nos Brasileiros, somos criativos.

Very nice project, good work.
lark3po3 years ago
Great work!
j-pdup3 years ago
Wow awesome instructable. I started December with the same idea, I haven’t really made much progress since then, but your instructable will help a lot. I am planning to do the Ethernet and SD card part. If you can please give me some advise, will there be a lot of change in your hardware and software if I use the PIC18f97J60?
arthurb (author)  j-pdup3 years ago
Cool.

The hardware will change a lot, as you wan't to use a PIC that has the Ethernet MAC and PHY inside already. The software could be adapted, but microchip has a lot of the ethernet examples using this chip.

It's up to you to go the fast way ( with my project over here), or the fun way ( developing your own board )...

Fell free to ask any question : )
j-pdup arthurb3 years ago
Hey I am very impressed by your intractable. I started in the beginning of the year with almost the same project. The only thing is I want to use a pic18 and as well RS232. Will there be a lot of change in the code to use the networking and maybe a SD card. I will appreciate the help and any comment you can give me.
ma3d3 years ago
I know it's being a little pedantic, and understand using GET in this application for the sake of simplicity, but people doing similar projects should be aware that GET requests are not supposed to change state on an HTTP server, and that any request that will change state on the "server" such as the output of a display, LED, or motor should use a POST request. Browser UIs, web crawling bots, and other http clients are generally built with this assumption in mind so in some cases this can be a safety issue.
arthurb (author)  ma3d3 years ago
Good point,

But that is the way that microchip blinks leds on the examples, but the URL string should no be longer than 100 bytes to prevent overflow.

I know that maybe the LCD should use a post method. But i when i wrote that code i was still learning the GET request.

Another code I'm doing gives you the option of send a bitmap file to the board and make that show up on the TV. This one could only work with POST.
ma3d arthurb3 years ago
yeah, I agree that in the microcontroller it may make sense to violate this rule of web design. I mostly wanted to make people aware of the tradeoff between simplicity and convention that was being made.

It's good that you'll have an example of a POST.

BTW, this is a very cool project. thanks for sharing it.

-Matt
mooreroy3 years ago
(removed by author or community request)
arthurb (author)  mooreroy3 years ago
Bem eu poderia ter escrito todo o projeto em português, porem somente algumas pessoas teriam lido sem usar um tradutor. E outras nem se dariam o trabalho de usar o Google para gerar uma tradução horrível.
This what I have after running goggles translator,

" Well I could have written the entire project in Portuguese, but only some people would read without using a translator. And others would not even work to use Google to generate an awful translation."

I'm with you man, good job on this.

on a second note, would it be possible to play video files on this. I'm amusing off of usb or over Ethernet, maybe put an "O.S." of some kind on the SD card.
arthurb (author)  larsenk833 years ago
I don't think it would have the processing power needed to run videos. But an "O.S" might be possible, as this PIC has more power than the first computers.
its easy to understand portuguese if you speak Spanish (I'm native Spanish speaker) and I also did my instructable (for the contest) in English, believe me, its not as easy as it seems to be
Learn Portuguese first and then come back to criticize his spelling and grammar, otherwise s.t.f.u.
pwrage mooreroy3 years ago
@mooreroy, this is an incredibly rude comment and not at all constructive. Perhaps you could have volunteered to help clean up the grammar since @arthurb is obviously not a native English speaker.

I would imagine, @mooreroy, that you would be hard-pressed to construct a useful Instructable in Portuguese. I know I would be!

That said, @arthurb, I am very impressed with your work, and I think you have done a great job with this Instructable. Thanks for sharing!
Yup, I am a spelling/grammar Nazi for the most part. Well, okay, I don't carry an English degree, nor do I care about English as an art form...it does drive me nuts when people are too lazy/dumb to spell or use proper grammar and punctuation though.

I understand where you are coming from, but I think you might have missed the fact that the author's native language is probably not English.

For non English speaking folks, I make an exception to my grammar Nazism; and you should too!
wow, kind of harsh. I used to be a nitpicker like that then I spent a decade working with engineers who didn't grow up with English as their first language. I still cringe a little but Arthur's done a fine job methinks. Especially if English isn't his first language, which seems likely since he mentions he is in Brazil.
Next time don't apologize for being rude, just don't be rude! Suggesting a 5th grader could do a better job is not a constructive comment, one might even say patronizing.
muy buen proyecto! saludos desde Argentina!
Arthur ,
I am so impressed with all the effort you put into this project along with the explanations and referances you used. You are very talented ! I am english ( with a small amount of french speaking) and to think I would have missed all the learning if you posted this in your native language ... Thank you for all you have done !
Question , what is your occupation and electronics background , if you don't mind my asking ?
Build_it_Bob
arthurb (author)  Build_it_Bob3 years ago
Hi, thanks for reading. About your question,  currently  I'm an electronics engineering student at UFRGS.

I started learning electronics at  2004 I think. So far I learned everything in the internet, blogs ( HACKADAY, HACKEDGADGETS , ...) , some books ( The art of eletronics), and application notes. But mainly from blowing leds on a breadboard.

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