“A functioning alarm clock with an easily adjustable alarm time, a matrix display, and a nice case to go with it!
So, it’s a clock.
oh my god whaaaat
Yeah, there’s not much to say about the finished product.
Let’s just move on to the building part.
How to build?
First, grab an RTC Module and a Piezo Buzzer.
Connect:
- RTC GND to GND
- RTC VCC to VCC
- RTC SDA to SDA
- RTC SCL to SCL
- Buzzer GND to GND
- Buzzer signal to pin 3
- Buzzer VCC to VCC (i think some require this but mine doesn’t)
I chose to use this tiny breadboard to fit all the internals.”