Esp32c3 smartwatch
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CERES_OS Smartwatch – 3D Printed ESP32-C3
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Model information
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- Printables
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- Portable Devices
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- Creative Commons — Attribution
CERES_OS Smartwatch – 3D Printed ESP32-C3 Wearable
👉 CERES_OS GitHub Repository with code and circuit
CERES_OS is an open-source, ultra-lightweight smartwatch powered by an ESP32-C3 microcontroller and featuring a custom-built card-based UI. It includes time synchronization via NTP, real-time weather integration, an alarm, a countdown timer, a stopwatch, and power-saving deep sleep capabilities.
This page contains the 3D printable enclosure files designed specifically for the CERES_OS hardware layout.
Key Features & OS Capabilities
Card-Based Interface: Quickly switch between Home, Watch Tools (Alarm/Timer/Stopwatch), Weather, and System Status cards.
Automatic Sync: Fetches current time and weather metrics over Wi-Fi without blocking the UI.
Power Management: Supports deep sleep mode with dedicated wake-up button logic.
Wi-Fi Portal: Onboard configuration portal via
WiFiManagerto pair with new networks easily.
Required Electronics
MCU: ESP32-C3 SuperMini (or equivalent small-form ESP32-C3 board)
Display: 0.96" or 1.3" I2C OLED Display (SH1106 driver)
Battery: Small LiPo battery (3.7V) + TP4056/TP4057 charging module
Buttons: 3x Tactile Push Buttons (PWR/Enter, Next, Prev)
Extras: Active Buzzer
3D Printing Settings
Material: PLA or PETG (TPU recommended for wrist straps)
Layer Height: 0.16mm or 0.20mm
Infill: 20% - 30%
Supports: Needed for button cutouts and inner mounting lips depending on orientation.
Code & Firmware
The complete source code, hardware connection guide, and instructions are available on GitHub: