Recently, while browsing Hackaday, I came across a very cool watch project that is still in development, and I wanted to share it with everyone.
Background
The author is working on the ESP32 Pico Watch, which has WIFI, BT, Mesh, a vibration motor, an RTC, 4 buttons, a USB-C connector, and most importantly: 192 LEDs that you can control to create complex lighting effects on the watch.
There are a total of 4 rings of LEDs. The outermost ring is the second hand, which will be white. The two middle rings are purple, indicating minutes, and the innermost ring is yellow, indicating hours.The LED driver is an IS31FL3733-TQThe watch is inspired by the Japanese brand TokyoFlash® (www.tokyoflash.com)
The author hopes to create a fully modern connected watch that can communicate with our phones or any other IoT devices.
What Can This Watch Do?
The design of the 603-200 Morphwatch® aims to produce stunning visual effects using 192 LEDs. It consists of 4 rings of 603 size SMD colored LEDs.
- 1 outer ring made of 60 white 603 LEDs for the second hand.
- 2 middle rings of purple 603 bulbs to indicate minutes.
- 1 inner ring of yellow 603 bulbs representing hours.
Each LED can be programmed independently using the I2C library or through a Python script.In terms of visual effects, it allows users to unleash their creativity to the fullest.Aside from visual effects, this watch has many other features, thanks to its powerful Espressif® ESP32 PICO D4 chip.It can interact with your phone via Bluetooth. Through the phone, you can use the watch to enter a private MESH wireless digital network for communication.You can make your watch vibrate when your phone is out of range (using Bluetooth) or far away (using WIFI).With 4 buttons, you can design your watch to trigger certain actions, such as sending an emergency email or sending a vibration message to another watch…Using the MESH ESPNow protocol, each watch can communicate with another watch, sometimes over distances of hundreds of meters; you can establish your private long-distance communication system outside of cellular networks.You can also switch your watch into an access point, a network server, so anyone can connect to get information (a business card concept for the watch…)Of course, it also has the most important function: telling time.
Related Documents
Since this watch is open-source, everyone can access all related documents.
Main Text
We want to create a hybrid concept of a retro LED watch + a connected watch. Naturally, we thought of the ESP32 PICO D4 chip, which is powerful and the classic 603 LED. If this version is successful, we plan to move the 603 LED package to 402 and reduce the watch diameter, making it more suitable for women to wear.With a set of 192 LEDs driven by the classic IS31FL3733-TQ chip, we can achieve a series of very cool visual effects because each individual LED can be controlled independently via I2C, allowing us to unleash our creativity in designing the desired effects.
The ESP32 PICO 4D connects the watch with WIFI/BT and, most importantly, ESPNOW, allowing us to create a community MESH network.If there are enough watches, we even envision building a world communication network outside of existing commercial locked communication networks.The first concept was created using SolidWorks. This is a cool software that can evaluate various possibilities and test various graphical options.▼ Click to View
PCB Motherboard
Classic modules:
- Lithium battery charger module
- ESP32 PICO D4 to drive the system
- DS3231MZ real-time clock
- A CP2104 to convert USB to readable signals for ESP32
- A ME6211C33M5G-N 5v/BAT to 3.3v voltage regulator
- A TP4054 for charging
In this project, we need to frequently check the battery status. The ESP32 Pico D4 will read the battery status from (ADC).This first PCB board will send power and I2C signals to the sister board holding the LEDs and LED drivers. This way, we can easily design various different sister boards.The motherboard has plugs and buttons to select various functions.
The WIFI/BT antenna is a PCB antenna. We plan to offer options for RFM95 _868/915MHZ in the next version. We need to work on handling two different antennas.The USB plug for charging and uploading Arduino IDE sketches will be a USB-C port.
PCB Sister Board
The second part of this concept is to have a sister board that will accommodate 192 LEDs. A set of 3 connectors will send power and signals from the main board to the sister board.We found using this type of connector interesting, allowing maker friends to easily redesign a sister board with their own designs and creativity (adding a true color display, creating different LED patterns, adding micro motors with complex functions, etc….).Having a second board is also a great way to sandwich the battery in between.The LED sister board is pluggable. The design concept of this watch is that the wearer can easily unscrew the screws on the watch to tinker with the little gadgets inside.Besides the LEDs, only one IC is used, which is an IS31FL3733-TQ, accepting the IC2 protocol and capable of driving up to 192 LEDs organized in a matrix style.
It offers a cool 56mm diameter PCB (more suitable for men and RAP singers). Once the prototype passes functional testing, we will move the 603 package to 402 and reduce the diameter to 40mm, making it more suitable for women.
After hours of trying to design a 2-layer PCB, I was unsuccessful. So, this will be a 4-layer PCB.
This is the current progress of the watch. If you want to stay updated on the latest developments, feel free to follow this project on GitHub!
Project link: https://github.com/ccadic/The603-200
Original link: https://hackaday.io/project/181159-the-603-200-watch
Project author: pcadic
This is an open-source project; please be sure to credit the project source and original author information when reprinting.
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