Hello. I present you my new project — ESP32 CYD PDA. PDA is pocket digital assistant, like PalmOS or PocketPC devices in the past. Like a smartphone without phone functions.
No additional hardware needed. Cheap yellow display only.
Touchscreen calibration
It uses three-point touchscreen calibration. After you touch three points it calculates six parameters to match the screen point. That could fix shift distortions (but not rotations. Shifts and rotations require more points to calculate more parameters).
Storage
It uses internal flash to store user data. It uses FFat, so you can organize files in folders. View of large files supported. Edit of files below 8kb supported.
There are multiple internal apps:
- File management (with viewing and editing support)
- Touch sensor calibration
- TFT screen test
- Random number generator
- System info
- Password
- Drawing (without saving)
- LED control
- Calculator
- Fifteen puzzle game
- Lights Off puzzle game
- Screensaver
- Stopwatch
- Timer
- Breathing timer
- Brightness
More functions appear soon.
If you want to add or fix something you can do it. Or I can do it if that matches my vision. Also you can make bug report or pull request to my github:
https://github.com/sau412/esp32_cyd_pda/
Video demonstration: https://www.youtube.com/watch?v=mXp3R2wKOIw
You can try it with Arduino IDE, Flash Download Tool, or even web flasher: https://sau412.github.io/esp32_cyd_pda/flash
