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Showing 41-56 of 56 products · 4 unavailable products hidden
Octopus MQ3 Alcohol Sensor Brick
The Octopus MQ3 Alcohol Sensor Brick from ElecFreaks is an analogue gas sensor module with high sensitivity to alcohol vapour. It outputs an analogue voltage proportional to the detected alcohol concentration, making it straightforward to interface with Arduino and other microcontrollers. The MQ...
Alcohol Gas Sensor - MQ-3
The MQ-3 is an alcohol gas sensor suitable for detecting alcohol concentration in the air, similar to a breathalyser. It provides an analog resistive output based on alcohol concentration, with high sensitivity and fast response time. The drive circuit is simple — just one resistor is needed, and...
Gravity: IIC Ozone Sensor (0-10ppm)
The Gravity IIC Ozone Sensor measures ozone (O₃) concentration from 0 to 10 ppm with 10 ppb resolution using an electrochemical sensing element. Factory-calibrated for accurate readings out of the box, it connects via I2C through DFRobot's Gravity 4-pin interface. Compatible with Arduino, ESP32,...
Gravity: Arduino CO2 Gas Sensor
The Gravity CO2 Gas Sensor uses an MG-811 electrochemical sensing element to detect carbon dioxide concentration in the air. The output voltage decreases as CO2 concentration increases, and an onboard potentiometer lets you set a threshold for a digital on/off signal output. An onboard heating c...
Carbon Monoxide Sensor - MQ-7
This is a simple-to-use Carbon Monoxide (CO) sensor, suitable for sensing CO concentrations in the air. The MQ-7 can detect CO-gas concentrations anywhere from 20 to 2000ppm. This sensor has a high sensitivity and fast response time. The sensor’s output is an analog resistance. The drive circui...
SparkFun MicroMod ESP32 Processor
The SparkFun MicroMod ESP32 Processor Board brings Espressif's ESP32 into the MicroMod ecosystem via the M.2 connector interface. It provides WiFi and Bluetooth connectivity with the processing power of a dual-core Tensilica LX6 at 240 MHz. Simply align the keyed edge connector with any MicroMod...
F1031V Mass Air Flow Sensor
F1031V Mass Air Flow Sensor adopts thermodynamic principle to detect flow rate of gas medium in the flow channel, with high precision and good repeatability. It comes with built-in temperature sensor to provide temperature compensation for measured data. Meanwhile, the sensor has liner analog vol...
Force Sensitive Resistor 0.5
This is a force sensitive resistor with a round, 0.5" diameter, sensing area. This FSR will vary its resistance depending on how much pressure is being applied to the sensing area. The harder the force, the lower the resistance. When no pressure is being applied to the FSR its resistance will be ...
2.2k Ohm 0.5 Watt Metal Film Resistors - Pack of 8
A pack of eight 2.2 kΩ metal film resistors rated at 0.5 W (½ W) with ±1% tolerance. These are the same physical size as standard ¼ W carbon film resistors, making them a higher-power drop-in option for through-hole designs. Key Features 2.2 kΩ Resistance – ±1% tolerance for precise circuits ...
RP2040 Microcontroller
The RP2040 is Raspberry Pi's first microcontroller chip, featuring dual ARM Cortex-M0+ cores running at up to 133 MHz. Built on a 40 nm process in a compact 7 × 7 mm QFN-56 package, it delivers high performance at low cost for embedded applications. With 264 KB of on-chip SRAM across six indepen...
Solenoid - 36v
A linear push-type solenoid rated for 36 V DC that also works well at 12 V. Solenoids produce linear motion for pushing, pulling, or actuating switches and levers. This unit has a measured throw of approximately 10 mm. Key Features Linear Push Solenoid – For push, pull, and actuation applicati...
STM32F411 BlackPill Development Board
This simple development board for the STM32F411 is a great way to add a powerful STM chip to your next project. Featuring the STM32F411CEU6, this chip has 512 KB of flash, 128 KB of SRAM and runs at 100 MHz. There's a spot on the bottom for SOIC flash memory - you could solder on a 2 MB SPI flash...
Ammonia Gas Sensor - MQ-137
The MQ-137 is an ammonia (NH3) gas sensor from Winsen, designed to detect ammonia concentrations in the air. The sensing element is tin dioxide (SnO2), which has lower conductivity in clean air and increases in conductivity as ammonia gas concentration rises. A simple voltage divider circuit can...
Solar Power Manager with Panel (5V 1A)
Note: Includes Solar Power Manager 5V and Semi Flexible Monocrystalline Solar Panel (5V 1A). The DFRobot Solar Power Manager series are designed for IoT projects and renewable energy projects, providing safe and high-efficiency embedded solar power management modules for makers and application...
Actuonix PQ12-100-6-R Micro-Actuator
The Actuonix PQ12-100-6-R is a micro linear actuator with a servo-compatible PWM interface. Weighing just 22 grams with a 20mm stroke, it delivers up to 50N (~5 kg) of force thanks to its 100:1 gear ratio — making it one of the most powerful actuators of its size. The PQ12-R series operates as a...
High Quality Gold Plated XT30 Male Female Bullet Connector
This is a CE-certified XT30 plug that is mini-sized and takes up less space. The banana plug features a true gold plating and a cross-slot design with a larger contact area that can withstand a constant 15A and peak current of 30A. Its plastic casing is made of insulating material, and its flame ...
