# Countdown, with an Arduino

A countdown timer built with an RTC Module, LCD, and Arduino Nano to count down to a date.

## Usage

Build with Arduino IDE. Make sure to copy `config.example.h` to `config.h` and adjust settings before uploading to microcontroller.

## Components

You can probably swap these out, but I'm using a:
- An Arduino Nano
- [A ZS-042RTC Module](https://www.alldatasheet.com/datasheet-pdf/view/112132/DALLAS/DS3231.html)
- [1602A LCD Display Module](https://www.alldatasheet.com/datasheet-pdf/view/1574132/CRYSTAIFONTZ/LCD-1602A.html) 

## Pinout

1. A4 - SDA of LCD and RTC
2. A5 - SCL of LCD and RTC
3. 5V - VCC
4. GND - GND

Ensure the microcontroller has proper power.