Making an Arduino OLED Ring Clock

I have bought a tiny OLED display, its clean and clarity draw my attention. But what can it do for? How can I show it off? The second one is the point. (hahaha) Well, when I looked at the poster, its The Lord of the Rings, which is my favorite movie series.

Then, I got the idea! How about using this OLED display to make a ring clock? Well, I need to prepare the power supply, clock module and main control.

Step1

Hardware

1. 0.91”128x32 I2C OLED Display x1

2. 3.7V Lithium Battery Charger x1

3. DS3231M MEMS Precise RTC x1

4. Beetle main control x1 

5. 1000mah 3.7v Lithium Battery x1 

6. Needle x1

7. A piece of elastic braid tape

Step2

Connection Diagram

According to the thickness of the wrist and fingers, cutting the elastic braid tape and stitch the opening area with a needle line.

Using hot melt gun to stick previously welded parts to the telescopic ring.

And then this scuffed ring clock is done.