HC-89 Interrupt Sensor The HC-89 Interrupt Sensor is a sensor module that measures the rotational speed of an object. A Hall Effect sensor, which detects the existence of a magnetic field, is commonly used to measure the speed of an item. The rotational speed of a motor, wheel, or other spinning object is measured by this sensor. The output of the sensor is typically in the form of a square wave, with the frequency of the wave related to the speed of the item. The HC-89 sensor, as well as possibly related circuitry for communicating with a microcontroller or other device, is probably certainly present in the module you indicated. This is Speed Measuring Sensor Module For Arduino. An infrared emitter on one side and a receiver on the other side is used to detect the speed or RPM. There is an encoder wheel used to measure RPM that is placed between the sensor. The DO output interface can be directly connected to a micro-controller IO port if there is a block detection sensor, such as the speed of the motor encoder can detect. Pin Details: VCC: The positive 3.3-5 v power supply. GND: Connect power negative. DO: TTL switch signal output. AO: This is an analog output. Package Includes: 1 x HC-89 Interrupt Sensor Specifications Groove width 10mm Working voltage  3.3 V to 5 V Dimensions  2.3 cmx2cm Weight  5 grams

GD-007 Single Coin Acceptor Coin acceptor modules accept currency coins which can be suitable for various vending machines. Coin acceptor modules are available in multiple categories including single coin acceptors, comparable type coin acceptors, multi-coin coin acceptors, etc. The Single coin acceptor is specially designed to accept only a specific coin. A comparable type of coin acceptor is used to accept the coins that are similar to the coins put aside the coin acceptor. Multi-coin coin acceptors can accept different coins with one machine, and output different signals to the microcontroller.  The coin-accepting sensor device has an inbuilt microcontroller that takes data from the sensor inside the device and collects different coins. Using this data, the microcontroller knows whether this coin needs to be accepted or returned. The device is easily programmed using a push button located on the top. The coin acceptor device gives us an impulse signal on the output pin for every inserted coin and by counting impulses we know how many coins have been inserted. It also has three switches which we use in order to select the type of signal we want to get on the output. The first switch has three positions to select the impulse length. The second switch is used to set the signal to be +5 V(NC) or 0 V(NO). Using the 3rd switch, the precision of the device can be chosen. Applications: Vending Machine Also check BV30 Compact Bill Acceptor offered by Iotcart. It is designed for handling low-value transactions efficiently and securely. The bill acceptor has a compact design, making it suitable for use in vending machines, parking systems, and arcade games. It features enhanced sensing and security for accurate bill validation. The attractive bezel illumination comes in RGB options, providing an eye-catching display. Package Includes: 1 x GD-007 Single Coin Acceptor Specifications: Supply Voltage  DC+12V discrepancy 20% Temperature -10Celsius degree ~ +60Celsius degree Coin thickness 1.2 - 3mm

DS3231 Real Time Clock Memory Module with out Battery DS3231 is a low-cost, extremely accurate I2C real-time clock (RTC), with an integrated temperature-compensated crystal oscillator (TCXO) and crystal. Real-time clock generator seconds, minutes, hours, day, date, month and year timing and provide valid until the year 2100 leap year compensation DS3231 available in commercial and industrial temperature ranges, using a 16-pin 300mil SO package. DS3231 RTC  is a Precise Real-Time Clock Module with 32Kbit EEPROM and a built-in 10-bit temperature sensor having a resolution of 0.25C. The integration of the crystal resonator enhances the long-term accuracy of the device as well as reduces the piece-part count in a manufacturing line. The ds3231 Arduino is available in commercial and industrial temperature ranges and is offered in a 16-pin, 300-mil SO package.

Multi Coin Acceptor Programable for Vending Machines Are you using electronics to try to make a quick buck? Why stop at dime-sized items? This coin acceptor will accept as many as six distinct coin types!  The thickness, diameter, and fall time of the coins are used by the sensors in this coin acceptor to identify them, and it is entirely customizable so you are not restricted to any certain sort of currency. By analyzing the coin's mass, size, diameter, thickness, metal composition, and/or magnetism, the coin acceptor determines which coin it is, and after that, sends the proper electrical signal via its output link.  It also contains a coin reject button that your controller may use to instruct it to stop accepting coins. A pocket full of change, a 12 VDC supply, and a place for the change to fall once it is accepted are all you need to get the coin acceptor running. It can be easily interfaced with any sensors. Multi Coin Acceptor for Vending Machine Built

Analog Sound Sensor Microphone Module for Arduino This is a high-quality Analog Sound Sensor highly sensitive Microphone Module for Arduino used in detecting the loudness in the ambient, the Arduino can collect its output signal and actuate accordingly. You may use it to make some funny interactive works such as a "clap and buzz" to find your lost keys or remote control if you add a buzzer.

ADXL345 Digital Angle Acceleration Sensor Module The ADXL345 Digital Angle Acceleration Sensor Module is the go-to solution for high-precision movement measurement. Whether you're working on a DIY project or need accurate angle detection, this sensor module delivers. With versatile compatibility supporting both 5V and 3.3V inputs, it seamlessly interfaces with microcontrollers like Arduino. This sensor features wide sensitivity ranges, from +/- 2G to +/- 16G, offering flexibility for various applications. Its noise-resistant design, incorporating the onboard RT9161, ensures faster load speed, making it perfect for noisy power environments. DIY enthusiasts will appreciate its user-friendly design, and its mobile application suitability makes it a valuable tool for multiple scenarios. Made with quality in mind, the ADXL345 promises high-resolution measurements (4mg/LSB) for changes less than 1.0° angle. From skew detection to dynamic acceleration measurement, this sensor module is a versatile choice.

Optical Dust Sensor with Cable This PM2.5 GP2Y1010AU0F Dust Smoke Particle Sensor is an infrared emitting diode (IRED) and a phototransistor is diagonally arranged into this device. It detects the reflected light of dust in the air. Especially, it is effective to detect very fine particles like cigarette smoke. In addition, it can distinguish smoke from house dust by the pulse pattern of the output voltage. The module is mainly used for dust removal equipment alarm equipment, air purification equipment, dust robots, fire alarm, etc. industry equipment can detect smoke particles, pollen spores, and other particles. The sensor has a very low current consumption (20mA max, 11mA typical), and can be powered with up to 7VDC. The output of the sensor is an analog voltage proportional to the measured dust density, with a sensitivity of 0.5V/0.1mg/m3. Applications: Detecting dust in the air.  Air purifier, Air conditioner, the Air monitor. Fire alarm Dust robots Package Includes:  1 x Optical Dust Sensor Specifications Sensor  Optical Dust Sensor Power supply voltage DC5 ± 2V Sensitivity 0.5V / (0.1mg / m3) Dimensions 5 x 4 x 3cms  Weight  25 grams

4 Power Indicator Battery Detection Module A Power Indicator Battery Detection Module is a gadget that detects the charge level in a battery and displays the remaining power level to the user.It often contains a voltage divider circuit that can convert the battery voltage to a level that a microcontroller or other device can read, as well as an indicator circuit that may display the remaining power level using LEDs or other visual means.The Power Indication Battery Detection Sensor Module you indicated most likely has four LEDs or other indicator lights to indicate different degrees of remaining power, such as a green LED for full power, a yellow LED for medium power, and a red LED for low power. Onboard high precision voltage detection chip and power supply voltage chip.Four onboard battery indicator light-emitting diodes (leds). Three kinds of color display, red, yellow, green, representing 20%, 50%, 80%, 100% of the battery. Set aside all the batteries testing interface and the two positioning hole. By Removing the LEDs and extending their connections to arduino, this module can also be used with all arduino boards. PCB Size: 22.2(mm)x17.2.(mm) Package Includes: 1 x 4 Power Indicator Battery Detection Module Specifications: Voltage 12V Light Type  LED Dimension(mm) 22.2 x 17.2

Metal Detector Sensor Module A metal detector sensor module is a device that uses electromagnetic induction to detect the presence of metal objects. The module typically consists of a transmitter coil that generates a magnetic field, and a receiver coil that detects changes in the magnetic field caused by the presence of metal. When a metal object comes into proximity of the sensor, it will disrupt the magnetic field and the sensor will generate an output signal indicating the presence of metal. These types of sensor can be used in a variety of applications, such as security systems, industrial automation, and even in hobby projects. The output can be digital or analog, some modules can even provide the depth of the metal.You can use this LC Metal detector non-contact metal induction detection module as a metal detector. When it approaches any metal, it makes a sound. This is a module specifically designed to detect metal. The module operates by inducing currents in metal objects and responding when it occurs. A nice onboard buzzer signals when it detects something and an onboard potentiometer allow adjustment of sensitivity. The power cables of the Metal detector non-contact metal induction detection module will need soldering on for the module to function, positive to the outside of the module and negative between the potentiometer and an electrolytic capacitor.

Mini USB Nebulizer Circuit The circuit board product voltage is MICRO USB 5V, current 300mA, power 2W, frequency 113KHz\108KHz, and special drive chip for fixed frequency atomizer. Immediately after power-on, the amount of output is large. With 8-hour timing function, an external switch can be used to control the opening and closing of the atomizer. These waves are used to create the mist that can be inhaled. The circuit sensor also likely includes a power supply, such as a 5VDC USB connection, to provide power to the transducer, and a control circuit to regulate the frequency of the ultrasonic waves, in this case, 108Khz. This type of nebulizer circuit is portable and can be powered by a USB connection, making it easy to use and carry around. Package Includes: 1 x Mini USB Nebulizer Circuit 5VDC 2W 108Khz Specifications Working voltage  2.8V-6V Working frequency 108/112KHz Resonant frequency (Fr) 113 ± 3KHz Dimensions  5 x 4 x 1cms  Weight  5 grams

Heat Flame Sensor This tiny Flame sensor infrared receiver module ignition source detection module is Arduino compatible and can use to detect flame or wavelength of the light source within 760nm~1100nm also useful for Lighter flame detect at a distance of 80 cm.  Greater the flame, the farther the test distance. It has a Detect angle of  60° and is very sensitive to flame spectrum.  It produces the one-channel output signal at the D0 terminal for further processing like an alarm system or any switching system.  The sensitivity is adjustable with the help of a blue potentiometer given on the board.  Onboard signal output indication, output effective signal is high, at the same time the indicator light up, the output signal can directly connect to microcontroller IO. The flame of the most sensitive sensors flame, the regular light is also a response, generally used for fire alarm purposes. Applications Fire detection Fire alarm Fire fighting robot Drying systems Industrial gas turbines Gas-powered cooking devices Package Includes: 1 x Heat Flame Sensor Specifications: Output Channel 1 Operating Voltage (VDC) 3.3 ~ 5 Mounting Hole (mm) 3 Dimensions (mm) 32 x 14 x 3

Light Control Sensor AC 220V 10A  Light control sensors are game-changing technology that allows you to control lighting without worrying about unnecessary energy consumption or lights being left on. Light control sensors can also help you save energy. By presetting a time delay or programming lighting patterns, you can ensure that only the lights you need are on when needed. This helps reduce energy costs and makes lighting solutions more efficient. Working Light control sensors detect specific conditions and automatically turn lights on or off. For example, photoelectric sensors detect changes in light levels and trigger a response based on the difference in light. Certain light control sensors can be programmed to operate at specific times or days, making them ideal for areas where lighting is only needed at certain times.Light control sensors are an excellent way to save energy and reduce electricity bills by ensuring that lights are only on when needed. By automating lighting, they reduce energy waste and improve energy efficiency. Key

Gravity: Analog AC Current Sensor (20A) Gravity: Analog AC Current Sensor (20A) is the perfect solution for hassle-free AC current measurement. No more cutting wires or complicated circuits. Designed for non-contact measurement, this sensor offers multiple ranges, making it versatile for various scenarios. Whether monitoring AC motors, lighting, or electrical equipment, this sensor ensures high safety and easy installation. Compatible with 3V3/5V micro-controllers, it provides accurate readings without direct contact. The wide temperature range makes it suitable for diverse conditions. Enhance your projects with the reliability of Gravity: Analog AC Current Sensor.

Gravity: Huskylens - An Easy-to-use AI Camera | AI Machine Vision Sensor Huskylens is the ultimate solution for your robotics and AI projects. This AI camera offers a range of features including face recognition, object tracking, line following, and more. Designed to be user-friendly, you can connect it to popular control boards like Arduino and Raspberry Pi, making complex projects a breeze. The 2.0-inch IPS screen, advanced AI chip, and machine learning capabilities set this camera apart. Craft interactive projects, enhance your robot's vision, and explore new applications with ease. Made with quality materials and cutting-edge technology, Huskylens is a game-changer for AI enthusiasts and developers.

Piezo Sensor - 20MM The Piezo Sensor is a piezoelectric elements. 20mm is a perfect size for installing in cigar box guitars, foot stompers and other home-made instruments. The sensors can also be used for custom pickup arrangements in more traditional stringed and percussion instruments. An electric pick-up is a sure-fire way to take your cigar box guitar or another build to the NEXT LEVEL, and many builders report that their instruments are much more attractive to potential buyers if they include a pickup. Package Includes: 1 X Piezo Sensor Specifications: Plate Diameter  20mm Element Diameter 14mm Plate Thickness 42mm Lead Length ~50mm Plate Material Brass Resonant Frequency (kHz) 6.3 +/- .6kHz