Adafruit launched two new members to the Trinkey household. The USB Temperature and Humidity Sensor Trinkeys are plug-and-play USB-A boards that streamline including ambient temperature and humidity sensing to any USB host.

Adafruit’s adorably sized PCB is identical width as a USB-A port (12.0 millimeters) and solely 31.8 millimeters lengthy. The peak is 4.5 millimeters, with the tallest element being the reset swap for the bootloader. The far finish incorporates a capacitive contact sensor and doubles as a mounting level for a keychain. The board accommodates a Microchip ATSAMD21E18 microcontroller, an RGB LED (NeoPixel), and a SHT4x temperature / humidity sensor.

The USB Temperature and Humidity Sensor Trinkeys come pre-programmed with firmware that makes them plug-and-play environmental monitoring units. When connected to a number, they create a digital serial port and print the temperature, relative humidity, and contact sensor standing as a comma-separated values (CSV) string.

Because the system seems to the host laptop utilizing an ordinary USB profile, it ought to be appropriate with a variety of USB-host succesful units. For instance, you aren’t restricted to utilizing this atmosphere logging sensor with a PC or Raspberry Pi.

Reprogramming the USB Temperature and Humidity Sensor Trinkey is easy if you happen to want completely different information, a special format, or a special habits. Adafruit helps all of Trinkey’s elements with present CircuitPython and Arduino IDE libraries.

There are two variations of the Temperature and Humidity Sensor Trinkey out there. One comes with a Sensirion SHT41, and the opposite with a Sensirion HT45. As their identify implies, every has a barely completely different model of the SHT4x sensor. The SHT45 is extra correct than the SHT41.

Each boards are actually out there from Adafruit. The SHT41 Trinkey is $10.95, whereas the SHT45 Trinkey is $17.95 .