Light switch control in browser

This practise project learned me how to connect external device (in this case microbit) via serial and change something on web page.

How I started:

• Make code for microbit, basic serial connection, sending only two letters aa or bb.

• test connection with external device with minicom program in ubuntu if it receives those letters, it did.

• Then python writes the data into json file (ref:time aa:time bb:time ) with timestamp that shows the latest stamp so I could code the program to know which button was pressed latest.

• those conditions were made in html page in json query.

• Html reads the json file in loop, and updates that into browser page.

• script file (.py) must be in gci folder and executable

• file permissions are important

Executing program

• Ubuntu
• Apache2
• Ajax
• Json
• Python
• minicom useful to test serial connection