Smartwatch journey – Part 1

Introduction

Smartwatch is kind of nice accessory for you and your phone. You can see time, notifications without touching your phone. I wish I could have a smartwatch with long lasting battery and I could show the content I like. The very good one (I don’t mean Apple Watch) are expensive. So I decided to build my own smartwatch 9 month ago. It was a challange for me and my friend, who will build a better one. The research I did took some time.

I would like to have:

1. Bluetooth
2. Low power consumption
3. Display
4. Button
5. Optional: Accurate heart rate sensor.

So I need these things:

1. Microcontroller with Bluetooth Low Energy
2. Low power display
3. LiPo battery with TP4056 charger
4. 3D printer case
5. Reliable heart rate sensor