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Showing 21-40 of 51 products · 9 unavailable products hidden
Industrial pH Electrode - Armor Casing
This industrial-grade pH combination electrode features a sensitive glass membrane with low impedance, delivering fast response times, good thermal stability, and excellent reproducibility across the full 0–14 pH range. The Ag/AgCl gel electrolyte reference system provides a stable half-cell pote...
Light & Motor Driver for Python (V1.0)
This is a PWM driver board with four adjustment methods, namely, Python code direct control, PC host computer control, UART communication programming control, and potentiometer manual control. It is used in application scenarios such as DC motor speed control and light adjustment. This produ...
RFID Reader with Cards Kit- 13.56MHz
This RFID kit includes a 13.56M RF reader module, which use the RC522 IC, plus 2 S50 RFID cards to help you learn and add the 13.56 MHz RF transition to your project. The MF RC522 is a highly integrated transmission module for contactless communication at 13.56 MHz, it supports ISO 14443A/MIFARE ...
EL Wire - purple
Electroluminescent (EL) wire is a thin, flexible, phosphor-coated wire that emits a bright, even glow when driven by a high-voltage AC source. This 3-metre length of purple EL wire is 3 mm in diameter, making it easy to bend, wrap, and mount for a wide range of lighting and decoration projects. ...
DC-DC Step Down Buck Converter (6~24V to 5V/16A)
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A high-efficiency DC-DC step-down (buck) converter that accepts 6–24 V input and delivers a stable 5 V output at up to 16 A. With over 90% conversion efficiency at typical loads and output ripple below 20 mV, it provides clean, reliable power for demanding applications. The module includes over-...
Gravity: Analog AC Current Sensor (10A)
A non-contact AC current sensor with a clamp-on transformer probe, capable of measuring 0–10 A AC. Simply clamp the probe around an AC line and connect the 3.5 mm plug to the signal conversion module — no wire cutting or circuit modification required. The Gravity analogue interface outputs a 0.2...
Gravity: Analog Waterproof Capacitive Soil Moisture Sensor
The Gravity Analogue Waterproof Capacitive Soil Moisture Sensor from DFRobot measures soil moisture using capacitive sensing rather than resistive probes, offering significantly better corrosion resistance and longer lifespan. The sensor is fully waterproof and can operate even when completely su...
Gravity: Electrochemical Oxygen Sensor (0-100%Vol) - I2C
This full-scale oxygen sensor uses an original AO2 CiTiceL electrochemical probe to measure oxygen concentrations from 0–100%Vol via I2C digital output. A built-in calibration algorithm on the signal board supports single-point or double-point calibration for accurate readings in demanding enviro...
RS485 Waterproof Ambient Light Sensor (0-200,000 Lux)
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Introduction The Waterproof Digital Ambient Light Sensor is a durable and versatile device designed to measure light intensity from 0 to 200,000 Lux. It utilizes the Modbus-RTU 485 communication protocol and operates on a DC 5-32V power supply, ensuring seamless integration with systems like Ardu...
RS485 Wind Speed Transmitter
This wind speed sensor is a professional meteorological instrument used to measure horizontal wind speed within 0~32.4m/s. It integrates a hall sensor inside. The shell and wind cups are made of aluminum alloy material and use special mold precision die casting process, featuring small dimension ...
Gravity: GP8501 2-Channel PWM to 0-2.5V/VCC DAC Module
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##Introduction This is a 2-channel analog voltage output DAC module with PWM communication, 8-bit resolution, and 0.5% precision. It is well-suited for control projects operating within the 3.3V range, such as ESP32, Raspberry Pi, STM32, and other microcontrollers that require analog signal outpu...
Nordic nRF-PPK2 - Power Profiler Kit II
The Power Profiler Kit II is a standalone unit, which can measure and optionally supply currents all the way from sub-uA and as high as 1A on all Nordic DKs, in addition to external hardware. As we've featured on EYE ON NPI, this power profiler is an excellent value - with capabilities that match...
Gravity: Analog AC Current Sensor
INTRODUCTION When you want to measure AC current it is impractical and hazardous to cut in to your live wiring. The analog AC current sensor developed by DFRobot is a good solution to this problem. Using induction you can measure AC current without intrusive methods. Pl...
Gravity HF Gas Sensor (Calibrated) - I2C/UART/Analogue
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Measure hydrogen fluoride concentration with a factory-calibrated electrochemical probe that supports analogue, I2C and UART output modes. It is designed for quickly building an HF concentration detector for industrial and environmental protection applications.The sensor includes integrated tempe...
USB Cable and Charger Tester with 1.44" TFT LCD Color Screen
A compact, multi-function USB tester with a 1.44" TFT LCD colour display. It monitors voltage, current, power, capacity, charging protocol, and cable resistance in real time, with support for fast-charge protocol detection and PD active triggering. The tester integrates USB-A, Micro-USB, and Typ...
Adafruit PCA9546 4-Channel I2C Multiplexer
Need to use multiple I2C devices that share the same address? The PCA9546 4-Channel I2C Multiplexer lets you connect up to four same-address I2C devices to a single microcontroller by acting as a gatekeeper — write a single byte to select the active channel and all subsequent I2C traffic is route...
3.5mm (1/8) 4-Pole (TRRS) Audio Plug Terminal Block
A 3.5 mm (1/8") 4-pole TRRS audio plug with screw terminal connections — no soldering required. Use stranded or solid-core wire and a small screwdriver to create custom audio cables, breakouts, and test leads. TRRS stands for Tip, Ring, Ring, Sleeve, providing four contacts: three signal lines a...
ESP32S WIFI BLE Board-V1.0
ESP-WROOM-32 is a powerful, generic Wi-Fi+BT+BLE MCU module that targets a wide variety of applications, ranging from low-power sensor networks to the most demanding tasks, such as voice encoding, music streaming and MP3 decoding. The development board breaks out all the module’s pins to 0....
KnowFlow Basic Water Monitoring Kit
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Build a DIY water quality monitor for field studies, teaching or environmental projects with the KnowFlow Basic Kit. This Arduino-based kit measures two key water parameters: pH and electrical conductivity (EC).Data can be recorded automatically to a micro-SD card for later analysis, and the Blun...
Metal DC Geared Motor - 12V 50RPM 50kg.cm
A high-torque 12V DC geared motor with a 100:1 metal gear reducer. Built with 100% copper coils and a metal gearbox for durability, this compact motor delivers up to 50 kg·cm of stall torque at 50 RPM — ideal for robotics, automation, and projects requiring strong, controlled rotation. Key Featu...
