Parallel 20x4 LCD menu system with dual rotary encoders for APA Devices water treatment automation
Non-blocking 11-state UI library for Arduino-compatible boards (AVR, ESP32, ESP8266, STM32). Drives a 4-bit parallel LiquidCrystal display with two quadrature encoders, a two-tier alert system, PWM backlight with EEPROM persistence, optional DS3231 RTC modal, inline timer schedule screen (up to 3 on/off slots, auto-saved to EEPROM), and a factory-function API for menu screens with 1-3 fields
| Filename | Release Date | File Size |
|---|---|---|
| APALCDGUI-1.3.0.zip | 2026-06-02 | 310.07 KiB |
| APALCDGUI-1.2.3.zip | 2026-06-02 | 305.90 KiB |
| APALCDGUI-1.1.6.zip | 2026-05-31 | 54.33 KiB |
| APALCDGUI-1.1.5.zip | 2026-05-31 | 53.51 KiB |
| APALCDGUI-1.1.4.zip | 2026-05-31 | 49.72 KiB |
| APALCDGUI-1.1.3.zip | 2026-05-31 | 46.91 KiB |
| APALCDGUI-1.1.2.zip | 2026-05-31 | 46.47 KiB |
| APALCDGUI-1.1.1.zip | 2026-05-30 | 42.26 KiB |