It is my one of mandatory undergraduate projects in which radio stations being able to stream over IP/URL can be listened. Detailed explanation follows. (If the following photo doesn't appear, click here)
Python
- KY040 Rotary Encoder
- 10K Potentiometer
- Raspberry PI Zero W or any version of Raspberry no matter
- 20 x 4 LCD Display
- 12V Amplifier PAM 8610 Stereo
- (8Ω / 10W) x 2 Speaker
- ~240V or whatever in your country to 5V and 12V converter power suppliers (their quality is important since there is need to be regulated to prevent noise yet I use mobile phone 5V adapter to run my Raspberry PI Zero W)
- MCP3008 analog to digital converter microchip
- amixer
- mplayer
The following files involve required codes.
lcd.py ⇒ LCD display
soner.py ⇒ KY040's codes with child process which is Mplayer
volume.py ⇒ Potentiometer
radyoCs.py ⇒ Read and reserve urls which are in urls.txt
urls.txt ⇒ Radio Station's IPs or URLs
Firstly, remember one of the rule of thumbs:
Don't reinvent the wheel
The fact that there are applications of the components means we can use instructions existing already KY040's module and how to connect it --- For 10K potentiometer(volume). Lastly, 20x4 LCD Display
We need to create a subprocess by forking and to communicate with the child running mplayer via PIPE. What we need from mplayer is
- Station Name
- Track Artist
- Track Name
Then we parse and write the information into FIFO created to communicate with LCD display.
You can glance at photos what I did overall on its album.
I very too much like and interested in Object-Oriented Programming Concept and Design Patterns, nonetheless, I (couldn't)didn't follow my intention for this project since the time is too much short to complete this task :/