Project OAK MAIN BRD V0

⌚️ Project OAK (Open Art Work)

An approach to mimic analogue watch complications in a digital timepiece. One LED at a time.

⚠️ Current Version: v0.1

📝 Version History

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📁 Repository Overview

This repository contains all files related to Project OAK, including:

• Design files
• Datasheets
• Pin configuration sheet
• BOM (Bill of Materials)
• Source code and libraries
• Mechanical Integration files

📎 Project OAK SCH and DSN files can be viewed on CADLAB.io

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📖 Project Overview

Project_OAK explores a different approach to designing digital timepieces that mimic the beauty and intricacy of mechanical watch complications.

While building a digitalised analogue-style watch is fairly common, recreating some of the mechanical features in a purely digital watch is both challenging and exciting.

Although current smartwatches offer these functions via complex hardware, my goal is to implement them using simple hardware with minimal processing power.

• To add to its uniqueness, the entire watch will be constructed using stacked PCBs, which is aimed to be modular and reconfigurable based on our needs.
• The watch is designed with multiple colours and solder finishes, giving it a true electronics-nerd feel.

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🎲 How it Works

"V0.1 / V0.2" come with a simple design to set and view the time. Here’s an infographic that shows the process

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🔧 Initial Prototype

📌 Project_OAK_MAIN_BRD_V0.1 / V0.2 is an "engineering sample".

The primary goal of these variants is to test all available interfaces, validate battery performance, identify design flaws, and iterate for improvements.

Consider this board a creative playground, push its limits and explore unique feature additions for the upcoming revision.

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🚀 Down the line

Though the initial version of Project_OAK (V0.1 / V0.2) is just a simple watch featuring a time display using dual-tone LEDs,

The Future versions shall include:

• GMT
• Minute Repeater (ambitious!)
• Interactive sensors (Light, IMU, Temp, Step tracking, Buzzer, etc.)
• Higher-density LED matrix for complex visuals.
• Position tracking using GPS, LoRa, etc. (ambitious!)
• Exploring Low-power MCUs for long-life operation.
• Rechargeable battery option.
• Solar panel integration for energy harvesting.
• ...

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💎 Mechanical Integration (v0.1)

(These are the outputs from V0.1 variant. Design changes are expected in V0.2)

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⚙️ Getting Started

🔌 Programming the Board

The board can be programmed using the Arduino IDE via the ISP function. All the source code can be found in ProjectOAK/codes folder.

📝 Requirements:

• Arduino UNO/MINI/NANO/MEGA as ISP programmer
• ICSP connection to the Main Board (test points on the bottom side)

💡 ICSP Programming Notes:

• ICSP pins are exposed via Test Points arranged in 2.4mm pitch 2x3 connector style
• Either mount male headers or directly solder wires for programming
• Board supports two power options:
  • 3V Coin Cell (default)
  • EXT_3V3_IN via ICSP (requires mounting resistor R1, which is DNI by default)

⚡ Arduino IDE Settings

• Refer to this GitHub repo on how to burn the Bootloader and how to flash code through Arduino IDE MiniCore
• When programming the MAIN_BRD, update the ARDUINO IDE settings as shown below.

❤️‍🔥 Let me know what you think of this project. I'd love to hear your thoughts!

✨ Happy Designing!

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