I’m testing the AW9523B IO expander with an Arduino Nano. I can’t get the device to be recognized.
Using I2C scanner to find all attached I2C devices.
I’ve connected AW9523B to the correct pins to the SDA/SCL pints of the Arduino, with 5K pullups. INTN is connected to GND.
An EEPROM is also connected on the bus. The EEPROM is recognized on the bus. I swapped the SDA/SCL pins just to make sure, and still AW9523B was not found on bus.
I’ve tried changing the AD0 and AD1 pins to no avail.
I have a 22uf capacitor on the VCC.
Changing the AD0 pin does change the default state of a connected LED, so I’m fairly confident the chip is not dead.
I’ve also tried the two example sketches from:
Curious if anyone has gotten their AW9523B to work.
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