# TI-84_DFPlayer
TI-84 Plus with inbuilt MP3 player using an ATtiny85 as a communication bridge.

## Usage
- Put the `.ino` file on your MCU of choice, I used an ATtiny 85.
- Connect the DFPlayer to the MCU using the Serial port, use pins 0 (RX) and 1 (TX) on the ATtiny 85
- Connect the calculator to the MCU using its serial connection, use pins 4 (TIP) and 3  (RING) on the ATtiny 85
- Power the MCU using an external battery or steal power from the calculators batteries, you will need an external power switch and make a voltage devider
- Put music on the DFPlayers SD card
- Put DFPlayer.8xp on your calculator to control the DFPlayer
- Enjoy!