Adafruit SHT45 Trinkey - USB Temperature and Humidity Sensor

Half USB key, half temperature-humidity sensor, the Adafruit SHT45 Trinkey is designed for effortless integration into any computer with a USB A port. Its compact PCB slides easily into any USB A socket, transforming your device into a smart environmental monitoring tool.

This Trinkey is powered by the ATSAMD21 microcontroller, ensuring seamless operation with minimal circuitry. Experience the vibrant glow of a NeoPixel LED and interact using a capacitive touch input. A reset button is included to enter bootloader mode as needed.

The SHT45 sensor stands out with its exceptional ±1.0% typical relative humidity accuracy and ±0.1°C temperature accuracy, making it one of the finest sensors available. Pre-programmed with user-friendly code, it outputs data in CSV format over a serial/COM port for immediate use.

Specifications:

• ATSAMD21E18 32-bit Cortex M0+ Processor – 48 MHz, 256KB Flash, 32KB RAM
• Supports CircuitPython and Arduino programming
• USB CDC ACM connectivity for Serial, MIDI, or HID
• Includes RGB NeoPixel LED and Capacitive Touchpad
• Thermal-isolation in SHT45 sensor cutout
• Compact, durable, and keychain-friendly design

The SHT45 Trinkey is a versatile solution for ambient temperature and humidity monitoring, ideal for projects without complicated wiring or software. For more distant applications, a USB A extension cable can be employed. Opt for the SHT41 version for cost-effective options with slight precision trade-offs.