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Code
Assuming the the ip address of the arduino is 192.168.1.167 (check the serial monitor to see what it is), this code will allow you to send a sequence to the arduino via your web browser like so: http://192.168.1.167/?23456789
The way the code is currently setup is that the pins will go high one at a time, in sequence, for 25ms then move on to the next in line. So this example would blink pin 2,3,4,5,6,7,8 then 9.
As it stands, the user will not see the webpage return until the arduino is finished processing the request. You could change the code to return right away and then process the request afterwards if needed, but I liked seeing the return after it was completed – like a receipt, instead of an order
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<iframe style="height: 510px; width: 100%; margin: 10px 0 10px;" allowTransparency="true" src="https://codebender.cc/embed/sketch:451853" frameborder="0"></iframe>
Embed The Serial Monitor
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