Uploaded April 2025 | Updated September 2026, 3 weeks ago
Pixel Clock is a minimalist digital clock UI built with LVGL v9 on ESP32-P4. It looks simple — until the hidden snake game comes to life.
Features:
Pixel-style time display using 3×5 character blocks
Smooth colon blink every second
Only redraws digits that change (optimized rendering)
Tap interaction: falling color tiles
Surprise snake game mode (visual only – not user-controlled)
Built entirely with ESP-IDF + LVGL
Built With:
ESP32-P4
LVGL v9
ESP-IDF
[ESP32-P4-NANO]
waveshare.com/esp32-p4-nano.htm?&aff_id=116255
[Project Github]
github.com/0015/Pixel-Clock
Pixel Clock is a minimalist digital clock UI built with LVGL v9 on ESP32-P4. It looks simple — until the hidden snake game comes to life.
Features:
Pixel-style time display using 3×5 character blocks
Smooth colon blink every second
Only redraws digits that change (optimized rendering)
Tap interaction: falling color tiles
Surprise snake game mode (visual only – not user-controlled)
Built entirely with ESP-IDF + LVGL
Built With:
ESP32-P4
LVGL v9
ESP-IDF
[ESP32-P4-NANO]
waveshare.com/esp32-p4-nano.htm?&aff_id=116255
[Project Github]
github.com/0015/Pixel-Clock
![[USB-Serial] Android Phone + ESP32-LoRa Module + Chat App = Text Transceiver!](https://i.ytimg.com/vi/4GVH3JicaPo/mqdefault.jpg "[USB-Serial] Android Phone + ESP32-LoRa Module + Chat App = Text Transceiver!
Overview:
This project combines an Android chat app with an ESP32-based LoRa module to enable the wireless transmission of short messages. The Android app provides a user-friendly interface for sending and receiving messages, while the LoRa module facilitates long-range communication between the app and physical devices.
Workflow:
1. Android app establishes USB-Serial connection with ESP32 module.
2. Messages are sent from the app to the ESP32 module via USB-Serial.
3. ESP32 module transmits the messages wirelessly using LoRa.
4. Received messages are forwarded from the ESP32 module to the recipients app via USB-Serial.
5. Messages are displayed to the recipient.
Benefits:
- Long-range communication capability
- Low power consumption for extended device operation
- Internet-independent communication
This project enables wireless short message transmission by integrating an Android chat app with an ESP32-based LoRa module, offering users a convenient way to communicate over long distances without relying on internet connectivity.
[Google Play - LoRa Chat App ]
https://play.google.com/store/apps/details?id=com.thatproject.lora_chat
[ESP32+LoRa(915Mhz)]
https://amzn.to/3NcxCIP
[ESP32-LoRa(SX1262) Source Code]
https://github.com/0015/ThatProject/tree/master/ESP32-LoRa/Chat_APP_SX1262
#Transceiver #ESP32 #LoRa #Android #ChatApp #UART #ThatProject")
