Uploaded July 2026 | Updated September 2026, 2 weeks ago
Why build a standalone Rubik's Cube solver when smartphone apps already exist? Because I wanted a physical, screen-free gadget to play with together with my kids!
This is a fully handheld, offline Rubik's Cube solver powered by an ESP32-S3. It scans the cube using a built-in camera, detects colors with OpenCV, allows manual touch correction via an LVGL UI, and guides you through the solution step-by-step on a 2-inch LCD screen—all without needing a phone, cloud, or PC.
Hardware Components
• MCU: ESP32-S3 (Dual-Core, PSRAM)
• Board: Waveshare ESP32-S3-Touch-LCD-2
• Display: 2.0-inch ST7789T3 SPI LCD (240x320) + CST816S Touch Screen
• Camera: OV5640 Camera Module
• Battery: Internal LiPo Battery with Physical Power Switch
• Enclosure: Custom 3D Printed Case
[ESP32-OpenCV-Projects]
github.com/0015/ESP32-OpenCV-Projects
[ESP32-S3 2" Display + OV5640]
waveshare.com/esp32-s3-touch-lcd-2.htm?&aff_id=116255
#ESP32 #RubiksCube #OpenCV #3DPrinting #DIYElectronics #Maker #LVGL #EmbeddedSystems
Why build a standalone Rubik's Cube solver when smartphone apps already exist? Because I wanted a physical, screen-free gadget to play with together with my kids!
This is a fully handheld, offline Rubik's Cube solver powered by an ESP32-S3. It scans the cube using a built-in camera, detects colors with OpenCV, allows manual touch correction via an LVGL UI, and guides you through the solution step-by-step on a 2-inch LCD screen—all without needing a phone, cloud, or PC.
Hardware Components
• MCU: ESP32-S3 (Dual-Core, PSRAM)
• Board: Waveshare ESP32-S3-Touch-LCD-2
• Display: 2.0-inch ST7789T3 SPI LCD (240x320) + CST816S Touch Screen
• Camera: OV5640 Camera Module
• Battery: Internal LiPo Battery with Physical Power Switch
• Enclosure: Custom 3D Printed Case
[ESP32-OpenCV-Projects]
github.com/0015/ESP32-OpenCV-Projects
[ESP32-S3 2" Display + OV5640]
waveshare.com/esp32-s3-touch-lcd-2.htm?&aff_id=116255
#ESP32 #RubiksCube #OpenCV #3DPrinting #DIYElectronics #Maker #LVGL #EmbeddedSystems
![[On-Device] ESP32 Text-to-Speech Demo with Multi-Language Support (Pico TTS & LVGL Integration)](https://i.ytimg.com/vi/feHGNeRQMss/mqdefault.jpg "[On-Device] ESP32 Text-to-Speech Demo with Multi-Language Support (Pico TTS & LVGL Integration)
In this video, I demonstrate my ESP32 Text to Speech (TTS) project, where I integrate Jades Pico TTS component to bring multilingual support to the ESP32 platform. While Espressifs official TTS model currently supports only Chinese, Pico TTS fills the gap, enabling languages like UK and US English, German, French, Italian, and Spanish. The project is built with LVGL for a smooth UI experience. Watch as I show how to convert text to speech, perfect for embedded systems with speaker output.
[ESP-SR TTS Speech Synthesis Model]
https://docs.espressif.com/projects/esp-sr/en/latest/esp32s3/speech_synthesis/readme.html
[ESP32-S3-BOX-3 Development Board]
https://amzn.to/3zH9eMF
[PicoTTS]
https://components.espressif.com/components/jmattsson/picotts
[PicoTTS LVGL Demo]
https://github.com/0015/esp-picotts/tree/BOX-3_LVGL9_UI_Demo
#esp32 #TTS #LVGL #PicoTTS #ThatProject")
