| Component | Description |
|---|---|
| Xiao ESP32 C3 | Microcontroller |
| Waveshare 3.52inch BiColor E-paper | 360x240 display (refresh time: 1.5 secs) |
| BH1750 | Light sensor |
| DS3231 | RTC for timekeeping |
| LiFePO4 6000mAh 3.2V Battery | Cheaper compared to ICR Cells |
| TP5000 | 2-in-1 charging module |
| BMS | 2.5V Low Cutoff |
| USB-C breakout | Any receiving board |
| Other components | Wire, capacitor (104), resistor (1M Ohm), connectors, switch, LED (1), etc. |
- Update the GPIO pin config in the header file
src/epdif.h.
- Arduino IDE installed
- ESP32 board support added to Arduino IDE
- Required libraries:
SPI,Wire,WiFi,NTPClient,Preferences,BH1750,RTClib
- Clone the repository:
git clone https://github.com/KamadoTanjiro-beep/E-Paper-Display-NTP-Clock.git
- Open the project in Arduino IDE.
- Update the WiFi credentials in the
epdNtpClockV1.inofile:const char *ssid = "Your_SSID"; const char *password = "Your_PASSWORD";
- Upload the code to your ESP32 board.
Check issues.
Clock based on Waveshare 3.52inch e-Paper HAT, 360 × 240. 🍃 Eco-Friendly!
The clock runs on a 6000mAh LiFePO4 cell (:leaves: :leaves: Eco-Friendly!). It uses an RTC for power-saving operation and connects to NTP daily to update itself.
It also includes a LUX sensor (BH1750) for sleeping while it is dark (E-paper doesn't have a backlight). (:leaves: :leaves: :leaves: Eco-Friendly!)
Made of old delivery cardboards. 🤯 One-Punch Eco-Friendly Boost Ultra Pro Max 🍃 to ♾️
Supports 5V 1A charging with options up to 2A.
All USB-C operation (charging and debugging).
This clock does not run on the GxEPD2 Library (the display was not supported at the time of making). It uses the OEM-provided basic library.
Battery life:
- Full: 06/06/2024
- Dead: 01/11/2024 (Around 4 months and 27 days)
- Battery Icon
| Feature | Description |
|---|---|
| Minimalistic design | Simple and clean design |
| Auto-updates internal clock | Daily updates (requires Wi-Fi connectivity) |
| Big Icons | Easy to read |
| Battery percentage and voltage | Displays battery status |
| Updates every 60 seconds | Sleeps for the rest of the time |
| Mammoth 6000mAh battery | Long-lasting power (your personal choice though) |
Distribute it freely but link back to this project or provide some good words or attributes or donate. You are on your own; I take no responsibility if this device causes any damage.