{"title":"Adafruit SHT41 Trinkey - USB Temperature and Humidity Sensor","handle":"adafruit-sht41-trinkey-usb-temperature-and-humidity-sensor-ada5912","url":"/products/adafruit-sht41-trinkey-usb-temperature-and-humidity-sensor-ada5912","description":"The Adafruit SHT41 Trinkey is a tiny USB A device that combines an ATSAMD21 microcontroller with a Sensirion SHT41 temperature and humidity sensor. Simply plug it into any USB A port on your computer and start reading environmental data — no wiring, soldering, or driver installation required.\n\nThe board ships pre-programmed to output a unique serial number, temperature, humidity, and capacitive touch data over a serial/COM port in CSV format, so it works straight out of the box. Reprogram it with CircuitPython or Arduino to customise the behaviour, add HID or MIDI functionality, or create your own sensor applications.\n\nKey Features\n\n\nSHT41 Sensor – ±1.8% RH typical accuracy (25–75% RH) and ±0.2 °C typical temperature accuracy (0–75 °C)\n\nATSAMD21E18 Processor – 48 MHz Cortex M0+ with 256 KB flash and 32 KB RAM\n\nUSB A Plug – Plugs directly into any computer's USB port, no cable needed\n\nPre-Programmed – Ships with CSV serial output of temperature, humidity, and touch data\n\nNeoPixel LED – Single RGB LED for visual feedback\n\nCapacitive Touch Pad – One touch input on the end of the board\n\nNative USB – Serial, MIDI, and HID (keyboard/mouse) support\n\nCircuitPython & Arduino – Full library support for SHT4x, NeoPixel, and FreeTouch\n\nThermal-Isolation Cutout – PCB cutout reduces heat transfer from USB port to sensor\n\n\n\nTip: The reported temperature may be a few degrees higher than ambient due to self-heating from the USB port. Use a USB A extension cable for more accurate ambient readings or to measure at a distance from the computer.\n\n\nAlso Consider\n\n\nSHT41 Breakout – Standalone SHT41 sensor with STEMMA QT for use with any microcontroller\n\n\nIdeal For\n\nQuick desktop temperature and humidity monitoring\nData logging without additional hardware\nEnvironmental monitoring for server rooms or offices\nSimple USB sensor projects and prototyping\n\n\nPackage Contents\n\n1× Adafruit SHT41 Trinkey (pre-programmed, ready to use)\n","vendor":"Adafruit","product_type":"physical","in_stock":true,"options":[],"variants":[{"id":1125,"title":"Default Title","sku":"AF-5912","mpn":"ADA5912","price":18.49,"compare_at_price":0.0,"on_sale":false,"in_stock":true,"available_quantity":100,"option1":"Default Title"}]}