32 Band Audio Spectrum Analyzer Using Oled Display And Attiny85

Visualizations are an important part of a music player. They provide the user with something to feast their eyes on especially when the music has no video. For today’s tutorial, we will build a visualization device, capable of providing a visual representation for any kind of music fed into it.

Visualizations are an important part of a music player. They provide the user with something to feast their eyes on especially when the music has no video. For today’s tutorial, we will build a visualization device, capable of providing a visual representation for any kind of music fed into it.
Audio Visualizer
The goal of this project is to get smooth, appealing music visualization on the ATTiny85, optimizing around its limited speed and resources (RAM and program memory). It’s an ongoing project being developed by GitHub user Colonel Watch, which is mostly complete but it’s otherwise fully functional and ready to be flashed.

At the heart of today’s project is the Attiny85 which is an 8-bit, low power AVR microcontroller based on RISC CPU architecture and comes as an 8-pin PDIP interface. It is a very small microcontroller with impressive inbuilt functions that helps it perform wonderfully well and fits into the needs of users who want a very tiny DIP microcontroller.

Some of the features of the attiny85 include;
Flash type Program Memory
8Kb flash memory
20 MIPS/DMIPS CPU Speed
512 bytes of SRAM
512 bytes of EEPROM
Supports SPI(1) and I2C(1) communication protocols
5 PWM pins
8-bit Timers (2)
1.8v – 5.5V operating voltage

For this project, the Attiny85 is charged with obtaining the signal through the analog frontend created along it’s ADC, then compute the signal and display the output.”

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