Adafruit PCT2075 Temperature Sensor - STEMMA QT / Qwiic

The Adafruit PCT2075 Temperature Sensor is a code compatible, drop-in replacement for the LM75 I2C temperature sensor offering improved precision with its 11-bit ADC compared to the LM75’s 9-bit ADC. The sensor supports up to 27 devices on the same bus thanks to its address pins working in three states (high, low, floating), a significant increase from the 8 allowed on the LM75 bus.

This breakout includes the required support circuitry and a STEMMA QT / Qwiic JST SH connector, enabling seamless, solder-free connections to compatible microcontrollers using available adapter cables.

• High precision temperature sensing with 11-bit ADC
• Supports up to 27 sensors on the same I2C bus
• STEMA QT / Qwiic compatible connector for easy plug-and-play usage
• Allows setting temperature alert thresholds
• Compatible with CircuitPython and various microcontroller platforms

The compact board measures 25.5mm x 18.0mm x 4.6mm and weighs 1.7 grams.

For additional resources including tutorials, libraries, and datasheets, see the Adafruit PCT2075 Learning Guide.