# HannaBox

## Microcontroller

D1 Mini ESP32
Due to mp3 playback it needs a multicore esp 32:

This library only works on multi-core ESP32 chips like the ESP32-S3. It does not work on the ESP32-S2 or the ESP32-C3 warning

## Pins

```
Amplifier:
25 -> DIN
D8 -> BCLK
D4 -> LRC
5V -> Vin
GND -> GND

DAC Channel ESP32 = PIN 25

SD Card:
CS -> D1
MOSI -> D7
CLK -> D5
MISO -> D6
```

## TODOs
* Card Reader with SPI. Configure hspi, second SPI channel?

![](images/wemos-d1-mini-esp32.png)

## Links

https://github.com/earlephilhower/ESP8266Audio

[Running two SPI devices at once](https://randomnerdtutorials.com/esp32-spi-communication-arduino/)