LiquidCrystal_PCF8574
LiquidMenu
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| LiquidCrystal_PCF8574 | LiquidMenu | |
|---|---|---|
| 4 | 1 | |
| 127 | 254 | |
| - | - | |
| 3.0 | 3.3 | |
| 10 months ago | 5 months ago | |
| C++ | C++ | |
| BSD 3-clause "New" or "Revised" License | MIT License |
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LiquidCrystal_PCF8574
- D1 Mini problems connecting to 1602 blue display with I2C backpack
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ESP32 connected to a 16x2 LCD Display
There is an I2C lcd adapter (using PCF8574) that drives the LCD using a I2C interface, saving you a bunch of pins. That way you can use local sensors as well, if you want.. Google link - Link to library
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Does anyone know what could possible cause this output? More info in comments
I don't have any bare displays, but some of the I2C backpack displays I have wouldn't work with the stock library. I finally found one here that worked reliably with a range of displays, but that won't solve your problem as it's all I2C and not nibble-mode writes.
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I2C 16x2 LCD display
In addition to the other two comments, I'll add: I've had issues over 25 years with the HD44780 initialization sequence... it can be horribly sensitive to the exact timing. I tried a couple of different libraries for the backpack displays and had the best luck with https://github.com/mathertel/LiquidCrystal_PCF8574
LiquidMenu
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Embedded UI design
Arduino LCD Menu
What are some alternatives?
IRremoteESP8266 - Infrared remote library for ESP8266/ESP32: send and receive infrared signals with multiple protocols. Based on: https://github.com/shirriff/Arduino-IRremote/
ArduinoMenu - Arduino generic menu/interactivity system
PCF8574_library - PCF8574 library. i2c digital expander for Arduino, Raspberry Pi Pico and rp2040 boards, esp32, SMT32 and ESP8266. Can read write digital values with only 2 wire. Very simple to use and encoder support.
LCD4Pico - Raspberry Pi Pico C++ library for HD44780 LCD
pcd8544 - Minimal footprint library for Philips PCD8544 LCDs on the Arduino.
MD_Menu - Menu system for displays with up to 2 lines
hl-alyx-glove - Firmware and Hardware for a Half-Life: Alyx Gravity Glove Replica
GEM - Good Enough Menu for Arduino
REBL_UI - Simple menu UI for Arduino with 16x2 LCD, rotary encoder, and a single button
ArduinoJson - 📟 JSON library for Arduino and embedded C++. Simple and efficient.
LCDMenuLib2 - Create a tree menu. Use it with different lcd types / console output / ssh console.