Parallel 20x4 LCD menu system with dual rotary encoders for APA Devices water treatment automation
Non-blocking 13-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), a generic two-point guided calibration screen, and a factory-function API for menu screens with 1-3 fields
| Filename | Release Date | File Size |
|---|---|---|
| APALCDGUI-1.7.0.zip | 2026-09-29 | 328.86 KiB |
| APALCDGUI-1.6.2.zip | 2026-09-28 | 326.96 KiB |
| APALCDGUI-1.6.1.zip | 2026-09-28 | 325.91 KiB |
| APALCDGUI-1.6.0.zip | 2026-09-28 | 325.21 KiB |
| APALCDGUI-1.5.0.zip | 2026-09-21 | 323.80 KiB |
| APALCDGUI-1.4.3.zip | 2026-09-20 | 315.13 KiB |
| APALCDGUI-1.4.2.zip | 2026-09-20 | 314.46 KiB |
| APALCDGUI-1.4.0.zip | 2026-06-05 | 311.02 KiB |
| APALCDGUI-1.3.0.zip | 2026-06-02 | 310.07 KiB |
| APALCDGUI-1.2.3.zip | 2026-06-02 | 305.90 KiB |