K Type Thermocouple
K-type thermocouple for 3D printer hot-end temperature measurement, rated 0–800 °C with ±2 °C accuracy. Features a 125 mm stainless steel cable. Requires an amplifier IC (e.g., AD595 or MAX31855) for signal conditioning.
K-type thermocouple for 3D printer hot-end temperature measurement, rated 0–800 °C with ±2 °C accuracy. Features a 125 mm stainless steel cable. Requires an amplifier IC (e.g., AD595 or MAX31855) for signal conditioning.
K-type thermocouple positive lead; DFRobot product specification states cable colour code Red (+). Connects to a thermocouple amplifier/input, not directly to MCU GPIO.
K-type thermocouple negative lead; DFRobot product specification states cable colour code Blue (-). Connects to the negative thermocouple amplifier/input.
| Pin | Position | Type | Function | Voltage |
|---|---|---|---|---|
| Red lead (+) | lead-red | analog input | K-type thermocouple positive lead; DFRobot product specification states cable colour code Red (+). Connects to a thermocouple amplifier/input, not directly to MCU GPIO. | thermocouple millivolt-level sensor signal; temperature range 0-800°C per DFRobot specification |
| Blue lead (-) | lead-blue | analog input | K-type thermocouple negative lead; DFRobot product specification states cable colour code Blue (-). Connects to the negative thermocouple amplifier/input. | thermocouple millivolt-level sensor return/reference |
I2C · SPI · Single data line · 3.3 – 5 V · Breakout
DHT/AHT sensors, SHT-series humidity chips, BMP and LPS barometers, BME combined sensors, DS18B20 probes, thermocouple amplifiers and non-contact MLX IR sensors — about 165 listings, very different accuracy classes.
Adafruit AHT20 Temperature & Humidity Sensor Breakout Board visual previewAdafruit AHT20 Temperature & Humidity Sensor Breakout Board
Adafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor visual previewAdafruit BME280 I2C or SPI Temperature Humidity Pressure Sensor
Adafruit BMP580 I2C or SPI Temperature and Pressure Sensor visual previewAdafruit BMP580 I2C or SPI Temperature and Pressure Sensor
Adafruit BMP581 I2C / SPI Temperature and Pressure Sensor visual previewAdafruit BMP581 I2C / SPI Temperature and Pressure Sensor
Adafruit BMP585 Ported I2C / SPI Temperature and Pressure Sensor visual previewAdafruit BMP585 Ported I2C / SPI Temperature and Pressure Sensor
Adafruit Chainable DS18B20 Extender Breakout visual previewAdafruit Chainable DS18B20 Extender Breakout
Adafruit HDC3022 Precision Temperature & Humidity Sensor visual previewAdafruit HDC3022 Precision Temperature & Humidity Sensor
Adafruit HTS221 Temperature & Humidity Sensor Breakout - STEMMA QT / Qwiic visual previewAdafruit HTS221 Temperature & Humidity Sensor Breakout - STEMMA QT / Qwiic
Adafruit HTU21D-F Temperature & Humidity Sensor Breakout - STEMMA QT visual previewAdafruit HTU21D-F Temperature & Humidity Sensor Breakout - STEMMA QT
Adafruit HTU31 Temperature & Humidity Sensor Breakout - STEMMA QT / Qwiic visual previewAdafruit HTU31 Temperature & Humidity Sensor Breakout - STEMMA QT / Qwiic
Adafruit LPS25 Pressure Sensor - STEMMA QT / Qwiic visual previewAdafruit LPS25 Pressure Sensor - STEMMA QT / Qwiic
Adafruit LPS28 Pressure Sensor visual previewAdafruit LPS28 Pressure Sensor
Biomedical Sensor Pad (10 pack) visual preview
BOSON: Heart Rate Monitor Sensor i20 visual preview
Capacitive Fingerprint Reader visual preview
Capacitive Fingerprint Reader (B) visual previewUART/I2C fingerprint modules, MAX30102 PPG breakouts, and analog ECG/EMG front-ends for access control and hobby biometric sensing.
Sensors · Biometric sensors · 24 parts
0.3M Pixel Serial JPEG Camera Module visual preview
100X Industrial Microscope Lens for Raspberry Pi HQ Camera visual preview
12.3MP Camera Module for NVIDIA Jetson Nano & Raspberry Pi CM3 visual preview
2.4G Wireless Video Transmission Module (640*480 Resolution) visual previewPi CSI modules, USB cameras, MCU-class OV2640/OV5640 boards, on-camera AI like HuskyLens and OpenMV, and thermal or ToF imagers — over 130 listings across very different pipelines.
Sensors · Cameras & vision · 139 parts
0.28 Inch LED Digital DC Voltmeter - Green visual preview
4-ch Current/Voltage/Power Monitor HAT visual preview
Adafruit INA219 FeatherWing visual preview
Adafruit INA219 High Side DC Current Sensor Breakout STEMMA QT visual previewINA-series I2C monitors, Hall-effect sensors like the ACS723 and Gravity 20A/50A boards, and non-invasive CT clamps for everything from 3.3V rail telemetry to mains current sensing.
Sensors · Current & voltage · 24 parts
25m Long Distance ToF Laser Sensor (±3cm Accuracy, 100Hz, 100K LUX Resistant) visual preview
4-20HR-MaxSonar-WRMI MB7489 Waterproof Ultrasonic Distance Sensor (50~500cm, IP67) visual preview
4-20SC-MaxSonar-WRMI MB7789 Ultrasonic Distance Sensor visual preview
5.8GHz Microwave Radar Module visual previewAbout 180 listings spanning VL53-series ToF breakouts, HC-SR04 and MaxSonar ultrasonics, 360° triangulation LiDARs, IR proximity sensors, 24GHz mmWave presence detection and laser break-beam sensors.
Sensors · Distance sensors · 178 parts