Arduino library for the I2C I/O expander chip AW9523B from Shanghai awinic technology co.,ltd. Based on its technical doc reference.
I've made a breakout board with this chip for Arduino/Raspberry with support for retro HPDL-1414 and it's available for purchasing at Tindie.com 👉 Retro display LED Driver & 16bit I2C I/O expander and here it's the 🛠 Schematic.
- AW9523B chip
- 2.5V~5.5V power supply
- ESD protection: ±4000V
- 16 GPIO's (6 free if display is used, P0-P5)
- Any GPIO can be configured as an input or an output independently
- LED PWM driver mode with 256 levels/LED and 4 global dim levels
- A fancy retro display: HPDL-1414
- Dimensions: 25 x 22 [mm]
This chip is cool enough that Adafruit has made another board and oss lib.
Twitter: @mrmx
This code is released under the MIT License. Please see LICENSE for the full text.