belltimer

Arduino Bell Ring Timer for a church bell tower using a single relay, lcd shield, and real-time-clock module.

The project provides the following:

• A real-time-clock to manage the time
• A LCD/Button shield to display the time
• A single relay to turn on and off the bell ring mechanism
• Software to manage:
  • Setting the time using the LCD shield buttons
  • Ringing the bell at certain hours
  • Ringing the bell at church time

Setting the time with the LCD buttons

By default the time will be displayed.

To enter time setting mode, push the select button to reach the desired setting;

1. Hour
2. Minute
3. Year
4. Month
5. Day
6. Day of the week
7. Store the time

Press up or down to change the value.

Manually ring the bell

Press the right button.

Required libraries

• The DS3231 RTC module uses the NorthernWidget library - https://github.com/NorthernWidget/DS3231
• The LCD module uses the standard lcd module - https://www.arduino.cc/reference/en/libraries/liquidcrystal/
• The RTC module communicates via I2C using the Wire library - https://www.arduino.cc/en/reference/wire