PCF8574
lcdgfx
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PCF8574
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I need help with I2C
Name: "Adafruit PCF8574" Author: Adafruit Sentence: Arduino library for the PCF8574 I2C GPIO expander Adafruit shop Website: https://github.com/adafruit/Adafruit_PCF8574 Name: "EasyPCF8574" Author: Djames Suhanko Sentence: Generic library for PCF8574 easy to use Website: https://github.com/DjamesSuhanko/EasyPCF8574 Name: "IoAbstraction" Author: davetcc Sentence: Treat PCF8574, MCP23017 and Shift registers like pins, matrix keypad, touch screen handler, button press and rotary encoder management (switches) on any supported IO (including DfRobot & Joysticks) with event handling, interchangable AVR/I2C(AT24) EEPROMs. Website: https://github.com/davetcc/IoAbstraction Name: "PCF8574" Author: Rob Tillaart Sentence: Arduino library for PCF8574 - 8 channel I2C IO expander Website: https://github.com/RobTillaart/PCF8574.git Name: "PCF8574 library" Author: Renzo Mischianti Sentence: Most starred PCF8574 library for Arduino (standard and SAMD), Raspberry Pi Pico and rp2040 boards, ESP8266, smt32 and esp32 Website: https://www.mischianti.org/category/my-libraries/pcf8574/ Name: "PU2CLR PCF8574" Author: Ricardo Lima Caratti, [email protected] Sentence: Control the PCF8574 8-Bit I/O Expander with Serial Interface with your Arduino Website: https://github.com/pu2clr/PCF8574 Name: "jm_PCF8574" Author: Jean-Marc Paratte Sentence: PCF8574 Arduino Library. Website: https://github.com/jmparatte/jm_PCF8574 Name: "pcf8574" Author: MSZ98 Sentence: Arduino library for PCF8574 io expander module Website: https://github.com/MSZ98/PCF8574
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I2C ioexpander using 16x2 lcd i2c module
There are plenty of libraries to use it as a generic I2C i/o device and mix n match input and output, e.g. https://github.com/RobTillaart/PCF8574 is well documented.
lcdgfx
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I finally understand enough about programming to make this simple little 3d starfield running on just an arduino
Using the lcdgfx library to handle the lowest level stuff. Implemented basic 'real 3D' rendering from this example from a buddy (for Pico8). The 3d projection math was a lot simpler than I thought it would be!
What are some alternatives?
jm_PCF8574 - jm_PCF8574 Arduino Library
esp8266-oled-ssd1306 - Driver for the SSD1306 and SH1106 based 128x64, 128x32, 64x48 pixel OLED display running on ESP8266/ESP32
EasyPCF8574 - A simple PCF8574 control
ssd1306 - Driver for SSD1306, SSD1331, SSD1351, IL9163, ILI9341, ST7735, PCD8544, Nokia 5110 displays running on Arduino/ESP32/Linux (Rasperry) platforms
Adafruit_PCF8574 - Arduino library for Adafruit PCF8574 & PCF8575 GPIO expander
Attiny85 - RubberDucky like payloads for DigiSpark Attiny85
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.
u8g2-kendryte-sdk-hal - u8g2 HAL (Hardware Abstraction Layer) ported for Kendryte SDK (K210). Currently the hw I2C protocol with DMAC support is available for use. SPI & SW bit-banging support (for I2c & SPI) is still in devlopment.
PCF8574 - PCF8574 8-Bit I/O Expander
SerialTransfer - Arduino library to transfer dynamic, packetized data fast and reliably via Serial, I2C, or SPI
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.
TaskScheduler - Cooperative multitasking for Arduino, ESPx, STM32, nRF and other microcontrollers