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SmartElex SX1509 16-Channel I/O Expander Breakout Board with I2C Interface
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The SmartElex SX1509 16-Channel I/O Expander is the perfect solution when you’re running out of GPIO pins on your microcontroller. Using a simple I2C interface, it allows you to expand your project with 16 additional digital I/O pins.
Each pin can be configured as input or output, letting you connect sensors, LEDs, or other devices with ease.Beyond basic expansion, this SX1509 breakout board comes packed with smart features like built-in PWM control for LED dimming, blinking, and breathing effects.
It even includes a keypad engine that can handle up to 64 buttons in an 8×8 matrix, making it ideal for interactive projects, embedded systems, and robotics applications. With voltage flexibility and level-shifting capability, it’s a must-have for anyone working with Arduino or other I/O-limited microcontrollers.
| Specification | Details |
|---|---|
| Item Type | Expander Breakout Module |
| Compatibility | 400 kHz I2C |
| Channels | 16 |
| Power Supply (V) | 5 |
This item is covered with a supplier warranty of 1 year from the time of delivery against manufacturing defects only.
In case of manufacturing defects or issues, we will replace the part after warranty confirmation by our technical team, but we won’t offer refunds or replace the entire product.