LiquidCrystal_PCF8574
PCF8574_library
| LiquidCrystal_PCF8574 | PCF8574_library | |
|---|---|---|
| 4 | 1 | |
| 129 | 214 | |
| - | - | |
| 3.0 | 3.6 | |
| about 1 year ago | 8 months ago | |
| C++ | C++ | |
| BSD 3-clause "New" or "Revised" License | GNU General Public License v3.0 or later |
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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
PCF8574_library
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Is there any way to use PCF8574 and PCA9698DGG,518 io expanders on a Seeeduino?
I'm trying to use the pcf8574 library by xreef https://github.com/xreef/PCF8574_library
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/
PCF8575_library - i2c 16bits digital expander with 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 and encoder support. Uncommet NOT_SEQUENTIAL_PINOUT define to have pins like datasheet and not sequential one.
pcd8544 - Minimal footprint library for Philips PCD8544 LCDs on the Arduino.
TaskScheduler - Cooperative multitasking for Arduino, ESPx, STM32, nRF and other microcontrollers
LiquidMenu - Menu creation Arduino library for LCDs, wraps LiquidCrystal.
ER_OLEDM1_CH1115 - Library to support the ER-OLEDM1.09-1 128X64 OLED Display Module driven by the CH1115 controller for the Arduino eco-system. SPI.
hl-alyx-glove - Firmware and Hardware for a Half-Life: Alyx Gravity Glove Replica
espMqttClient - MQTT 3.1.1 client library for the Espressif devices ESP8266 and ESP32 on the Arduino framework.
GEM - Good Enough Menu for Arduino
esp8266-oled-ssd1306 - Driver for the SSD1306 and SH1106 based 128x64, 128x32, 64x48 pixel OLED display running on ESP8266/ESP32
ElitePetite - A small tribute to the 80's game Elite. An Arduino+LCD shows the iconic tumbling Cobra Mk 3, plus some extras (other ships, clock mode).
ArduinoMenu - Arduino generic menu/interactivity system