3pcs navigation signal light

Feature: We all know what an AC dimmer is; for those who don’t, it’s a kind of a circuit which can control the amount of AC voltage to be given to any device. You can see them in a fan regulator or a light dimmer switch. It's good for a smart home if you need to turn the lighting on and off slowly. The lamp is slow damped, this creates a pleasant effect. Also can control AC/DC motor, electric pump, tools. Pulse Skip Modulation: Another way of doing this is by Pulse Skip Modulation. With PSM, one or more full cycles (sinuswaves) are transferred to the load and then one or more cycles are not. Though effective, it is not a good way to dim lights as there is a chance for flickering. Though it might be tempting, in PSM one should always allow a full sinuswave to be passed to the load, not a half sinus as in that case the load will be fed factually from DC which is not a good thing for most AC loads. The difference between leading edge cutting and PSM is mainly in the software: in both cases one will need a circuit that detects the zero crossing and that can control a triac. A circuit that can do this is easy to build: The zero crossing is directly derived from the rectified mains AC lines – via an optocoupler of course- and gives a signal every time the wave goes through zero. Because the sine wave first goes through double phased rectification, the zero-crossing signal is given regardless whether the sinus wave goes up through zero or down through zero. This signal then can be used to trigger an interrupt in the Arduino. Package includes: 3 x AC Light Dimmer Module

Features: - Sensitive material MQ-9 gas sensor is used to clean the air in the lower conductivity of tin dioxide (SnO2). - Detection method using low temperature cycling (1.5V heating) to detect carbon monoxide, conductivity sensors with carbon monoxide in the air increased with increasing gas concentration, spurious adsorption at high temperatures (5.0V heating) detection of combustible gases methane, propane and cryogenic cleaning gases. - Simple circuit can be used to change the conductivity, concentration of the gas is converted to the corresponding output signal. - MQ-9 high gas sensor for carbon monoxide, methane, liquefied petroleum gas sensitivity, the sensor can detect a variety of gases containing carbon monoxide and flammable, is a low-cost sensors for a variety of applications. Speciffications: 1. It adopts high quality double panel design with power indication and TTL signal output indication; 2. It has DO switch signal (TTL) output and AO analog signal output; 3. The TTL output valid signal is low. (When the output is low, the signal light is on, it can be directly connected to the MCU or relay module) 4. The voltage of the analog output, the higher the concentration, the higher the voltage. 5. It has good sensitivity to gas and natural gas detection. 6, there are four screw holes for easy positioning; 7, product dimensions: 32 (L) * 20 (W) * 22 (H) 8, has a long life and reliable stability 9, fast response recovery characteristics Electrical Performance: Dection of gas: Carbon monoxide flammable gas Dection of Concentration:10-1000ppm(CO);100-10000(Gas) ppm Input voltage: DC5V Power consumption (current): 150mA DO output: TTL digital quantities 0 and 1 (0.1 and 5V) AO output: 0.1-0.3V (relatively non-polluting), the highest concentration voltage is about 4V Using the chip: AT89S52 Crystal: 11.0592MHZ Baud rate: 9600 Compilation environment: Keil Special Reminder: After the sensor is energized, it needs to be preheated for about 20S, and the measured data is stable. The heating of the sensor is a normal phenomenon, because there is a heating wire inside, if it is hot, it is not normal. Package Included: 3 x MQ-9 Gas Sensor Module

3Pcs Sound Detection Sensor Module LM393 Chip Electret Microphone For Arduino Features: The product boast of output signal instruction. Single-channel signal output. Output valid signal is low and the light will be bright. Specification: Weight: 4g Size: 3.1 x 1.6 x 0.8cm Operating current pressure: 4V - 6V Package included: 3 x Sound detection sensor module

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA 3Pcs Infrared Obstacle Avoidance Sensor For Arduino Smart Car Robot Description: The sensor module light is adaptable to the environment, the working voltage of 3.3 V to 5 V. It has a pair of infrared transmitting and receiving tube, when detecting direction meet with obstacles (reflecting surface), reflected infrared receiving by the tube. After the comparator circuit processing, green indicator will light up, at the same time the signal output interface output a digital signal (a low level signal), can be adjust the detection distance through the potentiometer knob, effective distance range 2 ~ 80 cm, easy to assemble and use. So it can be widely used in robot obstacle avoidance, obstacle avoidance car, line count, and so on many occasions. Package included: 3 x Arduino obstacle avoidance sensor 3Pcs Infrared Obstacle Avoidance Sensor For Arduino Smart Car Robot 3Pcs Infrared Obstacle Avoidance Sensor For Arduino Smart Car Robot 3Pcs Infrared Obstacle Avoidance Sensor For Arduino Smart Car Robot

Feature: Note: This module does not suitable for IOS system. TTL data transparent transfer between a host Bluetooth device Build-in CSR company Bluetooth chip BC417143 Bluetooth specification v2.0 + EDR Works with any USB Bluetooth adapters Default Baud Rate: 9600, pairing code 1234, the working mode SLAVE Coverage up to 30ft Built in antenna Mini Size Using mainstream CSR Bluetooth chip, Bluetooth V2.0 protocol standards Serial module operating voltage 3.3V, 10 meters from the general The working current: pairing: 30mA ~ 40mA Sleep current: not sleep For GPS navigation systems, utility meter reading systems, industrial control systems mining site Can be used with a Bluetooth laptop computer plus a Bluetooth adapter, PDA and other devices to connect seamlessly   Specification: Power input: +3.3V DC Signal coverage: 30ft Size: 26.9 x 13 x 2.2mm Application: This module is mainly used for wireless transmission of data in the field a short distance. And PC can be easily connected Bluetooth device, you can also exchange data between two modules. Avoid cumbersome cable connections, direct serial cable replacement.   Package included: 3 x HC-06 30ft wireless bluetooth RF transceiver module

FAST AFFORDABLE COURIER SHIPPING TO SOUTH AFRICA Feature: Working voltage: DC5V-36V Trigger signal source: digital high level (DC3.3V-20V), can be connected to the microcontroller IO port, PLC interface, DC power supply, etc., can connect PWM signal, support signal frequency 0-20khz Output: DC5V-36V, continuous current at room temperature 15A, power 400W, assisted cooling conditions, the maximum current up to 30A. Applications: Output can control high power equipment, motors, light bulbs, LED lights, DC motors, mini pumps, solenoid valves, etc., you can enter the PWM, control the motor speed, lamp brightness and so on. Operating temperature: -40 to 85 ° C Size: 3.4 x 1.7 x 1.2cm Package includes: 3 x MOS Trigger Switch Driver Module 3Pcs MOS Trigger Switch Driver Module FET PWM Regulator High Power Electronic Switch Control Board 3Pcs MOS Trigger Switch Driver Module FET PWM Regulator High Power Electronic Switch Control Board 3Pcs MOS Trigger Switch Driver Module FET PWM Regulator High Power Electronic Switch Control Board

Specifications: Working voltage: DC 3.8V-5.5V Working current (5V): typical current 6mA Input and output signals (3 lines): GND, VCC is power, and VCC is 3.8V-5.5V Obstacle detection time (range from obstacle-free to obstacle-free or obstacle-free to obstacle-free): Working Principle: Sensors actively emit infrared light, according to reflected light detection, if detected obstacles, OUT foot output 0, otherwise 1. Detection distance (test environment, indoor, maximum power, Voltage 5V, power consumption 6.5ma): 1. white walls: 100cm 2. IBM black computer cover: 20cm 3.1 fingers: 18cm 4. palm: 30cm 5. a transparent pearl pen: 20cm Features: The new version has been greatly improved and has been gradually improving. 1. super miniature and designed with mechanical mounting holes. 2. Low power consumption, wide operating voltage range. The transmitting signal adopts modulation signal, long distance, good anti-jamming, and can work outdoors under non-direct sunlight (the distance will be shorter). 3. distance adjustable, ranging from 3cm-100cm. 4. Obstacle avoidance uses window technology to avoid the problem of critical zone. The sensor works stably. The user can directly use the output signal without considering the signal jumping. Usage: There are many precise adjustable potentiometers on the board, which can be adjusted according to the use environment. The adjusting range is from 3cm to 100cm. Because it is a reflection principle, it is related to the specific reflection target and can be adjusted according to the situation. The circuit board has a red LED that emits light when obstacles are detected. OUT output continues to be low. Obstacle-free is OUT output continues to be high. Sensor active infrared reflectance detection, so the reflectance and shape of the target is the key to the detection range, in which the black detection range is the smallest, the white is the largest; small area object distance, large area distance. Package Included: 3 x Obstacle Avoidance Sensor

Description: The ML8511 breakout is an ultraviolet light sensor which is easy to use. The MP8511 UV (ultraviolet) Sensor works by outputing an analog signal in relation to the amount of UV light that's tested. This breakout can be very handy in creating devices that warn the user of sunburn or test the UV index as it relates to weather conditions. The range of the most effective light tested by the sensor is 280-390nm. This is categorized as part of the UVB (burning rays) spectrum and most of the UVA (tanning rays) spectrum. It outputs an analog voltage that is linearly related to the measured UV intensity (mW / cm2). If your microcontroller can do an analog to digital signal conversion then you can test the level of UV! ML8511 UV light can be used with an analog voltage output proportional to the amount. Since the output voltage can therefore be directly connected to the MCU built A / D digital / analog converter, no photoelectric converting circuit. And the use of small, low-profile surface-mount package, suitable for use in portable devices. Package included: 3 x GY-8511 ML8511 UVB rays sensor

Features: 1. Using high-quality dual-panel design, with power indicator and TTL signal output instructions 2. there are four screw holes for easy positioning 3. Analog output voltage with the higher concentration of higher voltage 4. TTL output valid signal is low. (Low-level signal when the output light can be directly connected to the microcontroller or relay module) 5. The switching signal having a DO (TTL) output and analog output AO Special note: After the sensor is powered, needs wait about 20S, measured data was stable, heat sensor is a normal phenomenon, because the internal heating wire. Specifications: Size: 32 x 22 x 27mm Chip: LM393, ZYMQ-2 gas sensors Working voltage: DC 5V AO output:0.1-0.3 V (relative to pollution), the maximum concentration of a voltage of about 4V DO output: TTL digital 0 and 1 (0.1 and 5V) Input voltage: DC 5V Power consumption (current): 150mA Package included: 3 x MQ-2 gas sensor module

File download: Click here to open Description: The speed sensor is a wide voltage, high resolution, short response speed, digital output speed module, with a black code can measure the motor speed. Parameter: Working voltage: DC 4.5-5.5V Drop pressure drop: Vf = 1.6V Launch tube current: If Signal output: single channel; TTL level Resolution accuracy: 0.01mm Long size: 2.6mm x 2.2mm The main components: LM393, on the radio infrared measurement frequency: 5KHz Photoelectric slot width: 6MM Interface definition: VCC: Power supply positive GND: Power supply negative OUT: Signal output, can be directly connected to the microcontroller, standby output low level; detected something, output high level, while the indicator light off. Package includes: 3 x Speed Code Sensor 3 x Grid Plate 3 x Cable

Specifications: 1. Onboard TDA2030A audio power amplifier chip. 2. Mono 18W power amplifier circuit design. 3. Socket onboard horn. 4. The onboard 10 k adjustable resistance, can adjust the volume of the amplification. 5. The onboard power light. 6. Chip has lead to the main pin, can directly input audio signal. 7. Working voltage: 6 - 12V. 8. Board size: 33 x 25 x 23(mm) Package included: 3 x TDA2030A Audio Amplifier Board Module

Description: 1. On-board TDA2030A audio power amplifier chip. 2. Mono 18 w power amplifier circuit design. 3. On-board speaker terminal block 4 On-board 10k adjustable resistance, can adjust the volume of the amplification. 5. On-board power light. 6. Chip has lead to the main pin, can directly input audio signal. 7. Working voltage: 6 -12 v. 8. Board size: 31.6 (mm) x23.2 (mm).   Package included:   3 x TDA2030A Audio Amplifier Module