I need some help in order to take stock market data and send it to the arduino in order to display it on a lcd.
Ok, what do you need help with?
Well, how exactly do I do this is there a youtube video or any code references i can use.
Do you intend to have something like a PC "access the stock market data" and just "send" it to the Arduino for display, or do you want the Arduino to access the stock market data itself? And where is this data?
The answers to these questions can make for VERY different programs on the Arduino...
Yes thats the plan
I will get the info from YAhoo finance and then hopefully send it to the arduino in order to display it on the lcd. The arduino will be connected to the laptop.
Aryanp8:
Well, how exactly do I do this is there a youtube video or any code references i can use.
If you want people to do research for you too, then what is your contribution to YOUR project?
Try first to see if you can write an HTTP request to the URL of interest and just spit out the html. You might be surprised with JavaScript stuff dynamically updating the DOM and not making it as easy as you think
(You can check that from a Mac or Linux computer by issuing a curl to the url)
Note that Screen scraping is probably not a legitimate use case in the web site T&Cs
Have you really done any research on available devices. I don't see Arduino devices being best suited for your requirements. Raspberry ip 2/3 are almost as cheap as Arduino and have similar IDE platforms.
Its up you which devices you feel more comfortable with using. As J_M_L explained about JS and DOM, etc. your not going to find this project, or assignment easy unless you have permissions to access the data.
I did run a small check with
curl https://finance.yahoo.com/quote/MSFT?p=MSFT
and the stock price is in the HTML answer at multiple places, like after this span
<span class="Trsdu(0.3s) Trsdu(0.3s) Fw(b) Fz(36px) Mb(-4px) D(b)" data-reactid="14">
or after regularMarketPrice
might be doable but you might also be blacklisted (read this)
As mentioned above though, whilst nothing in Oath's (Yahoo) robots.txt file expressly prevents you from scraping their site, Yahoo finance is governed by Oath's Terms of Service.
You need to read that and ensure what you do is legit. They state for example
You may not remove, obscure, or alter any legal notices displayed in or along with the Services. Unless you have explicit written permission, you must not reproduce, modify, rent, lease, sell, trade, distribute, transmit, broadcast, publicly perform, create derivative works based on, or exploit for any commercial purposes, any portion or use of, or access to, the Services (including content, advertisements, APIs, and software)
That being said, HTM scraping is awfully slow (you download tons of data to extract 1 number) and possibly not legit...
There are alternatives - for example Alpha Vantage offers an API that is easy and legit to use and you parse results as JSON...
try this link for example:
https://www.alphavantage.co/query?function=TIME_SERIES_DAILY&symbol=MSFT&apikey=demo
I think you have to hunt around for a clean API which delivers selectable data in say in XML or JSON format.
Trying to extract data from HTML and separate it from all the formatting information will be very difficult (already mentioned) and will be constantly subject to change which you would have to program around.
Presumably you are interested in a few pieces of information (one or two stocks and the current prices) and are not attempting to develop a highly interactive and full featured viewing function.
css,h,cpp,html, or xml. isn't this starting to look like Gumtree?
We have had no clear response form Aryanp8 so far.
OK thanks everyone ill see what I can do.