Adafruit SHT4x Trinkey by Liz Clark published March 29, 2024, last edited June 16, 2025 posted in Adafruit Products Sensors/ Temperature & Humidity Arduino Compatibles CircuitPython Breakout Boards/ Touch Save New Favorite × Please sign in to include this guide in your list of favorites. You will be redirected back to this guide once you sign in, and can then save this guide as one of your favorites. Link Note Download Overview Pinouts Install CircuitPython Installing the Mu Editor Creating and Editing Code Connecting to the Serial Console Interacting with the Serial Console The REPL CircuitPython Libraries Frequently Asked Questions Troubleshooting "Uninstalling" CircuitPython Welcome to the Community! CircuitPython Essentials NeoPixel Blink Capacitive Touch CircuitPython SHT4x Demo Arduino IDE Setup Using with Arduino IDE Arduino NeoPixel Blink Arduino Capacitive Touch Arduino SHT4x Demo Logging SHT4x Data with CPython Sending SHT4x Data to Adafruit IO with CPython Downloads Single page Feedback? Corrections? Text View Primary Products Adafruit SHT45 Trinkey - USB Temperature and Humidity Sensor $17.95 Add to Cart Adafruit SHT41 Trinkey - USB Temperature and Humidity Sensor $10.95 Add to Cart Adafruit SHT45 Trinkey - USB Temp and Humidity Sensor with PTFE $18.95 Add to Cart 4 Beginner Product guide Downloads Files ATSAMD21 Datasheet Webpage for the ATSAMD21E18 (main chip used) SHT4x Datasheet EagleCAD PCB files on GitHub Factory Demo .UF2 File Fritzing object in the Adafruit Fritzing Library PrettyPins PDF on GitHub Schematic and Fab Print The schematic for the SHT45 and SHT41 versions are identical. SHT45 Fab Print dimensions are in inches SHT41 Fab Print dimensions are in inches Page last edited March 29, 2024 Text editor powered by tinymce. Sending SHT4x Data to Adafruit IO with CPython