I2C Multiplexer pHAT for Raspberry Pi
by 8086![An image of I2C Multiplexer pHAT for Raspberry Pi](http://shop.pimoroni.com/cdn/shop/products/8086I2C_1of1_128x128_crop_center.jpg?v=1596213365)
![An image of I2C Multiplexer pHAT for Raspberry Pi An image of I2C Multiplexer pHAT for Raspberry Pi](http://shop.pimoroni.com/cdn/shop/products/8086I2C_1of1_32x32_crop_center.jpg?v=1596213365)
This pHAT allows you to connect multiple I2C devices with the same address onto a single I2C bus.
It's a tidy and compact way of connecting an I2C multiplexer IC (TCA9548A) to a Pi - ideal for coupling with a Pi Zero W for a neat remote monitoring and graphing setup (though it's also compatible with all models of Pi with a 40 pin GPIO).
The EEPROM automatically loads the correct i2c-mux overlay and turns it into 8 individual I2C buses (/dev/i2c-3 to /dev/i2c-10) allowing direct communication with the I2C devices as normal (via i2cdetect / i2cget / i2cset / Python SMBUS, etc).
For each multiplexed output there are 4 pins:
- SDAx
- SCLx
- GND
- V
The "V" output can be altered from the default 3.3 volts to 5 volts by cutting the PCB trace between V and 3v3 and bridging V to 5v. The 3.3v supply is taken directly from the Pi 3v3 rail so care should be taken not to overload it.
Please note: product colour may vary, some production runs have been on a green PCB, but there is no functional difference :-)
-
I2C Multiplexer pHAT for Raspberry Pi
8086-006Out of stock£7.25
Shop with confidence – we've been serving the hobbyist electronics, Maker, and retro gaming communities since 2012.
- Satisfaction or refund guarantee
- Worldwide shipping via mail or courier
- 54,000+ customer reviews
- Secure website and payments