RNDMFG CHENNAI, Tamil Nadu

Infra Red Line Sensor Module based on I.R. SensorTCRT5000L. The module also has Sensitivity Adjustment Pot, and LED indicators for Power, and an LED indicator for Detection. Module can be easily mounted to Robot Chassis using Mounting Hole.

FEATURES

• Analog Output (0 VCC)
• Digital Output (Logic 0, Logic 1)
• Operates on either 3.3V or 5V (3V to 5.5V)
• LED Indicator for Power
• LED Indicator for Detection
• Sensitivity Adjustment through on board Potentiometer
• Mounting Hole for mounting sensor easily on Robot Chassis.

The Sound Detector is a small and very easy to use audio sensing board with three different outputs. The Sound Detector not only provides an audio output, but also a binary indication of the presence of sound, and an analog representation of its amplitude. The 3 outputs are simultaneous and independent, so you can use as many or as few as you want at once. The envelope output allows you to easily read amplitude of sound by simply measuring the analog voltage. Gain can be adjusted with a through-hole resistor, to change the threshold of the binary (gate) output pin as well. Check the hookup guide below for more information about setting gain. Each of the three output signals is present on the .1" header at the edge of the board. They are active simultaneously. If you arent using one in your particular application, simply leave that pin disconnected.

pH levels are important in soils, irrigation water and spray tank solutions. Soil and water pH is the single most important aspect in determining nutrient availability to crops. pH levels in spray tanks determine the effectiveness of pesticides. This multi-purpose meter to help provide a healthy growing environment for all plants. It tests for soil alkalinity / acidity, soil moisture, and sunlight.

ApH Meteris a device used forpotentiometricallymeasuring thepH, which is either theconcentrationor theactivityof hydrogen ions, of anaqueous solution. It usually has aglass electrodeplus acalomelreference electrode, or a combination electrode.^[1]pH meters are usually used to measure the pH of liquids, though special probes are sometimes used to measure the pH of semi-solid substances. 3in1 Moisture PH Light Meter for Hydroponic Plant Soil # Ideal tool for both indoor and garden plants care # Please clean the electrode after each use * 1 X 3 IN 1 PH LIGHT METER FOR PLANT SOILFEATURES.

With this 3 in 1 soil meter you can check in your garden, vegetable garden, lawn and potted plants whether the soil is suitable for a particular plant. Use the device to measure growing conditions for all kinds of plants indoors and outdoors. You can also check the humidity in the soil, the temperature and intensity of sunlight using this ground meter.

This 4 in 1 pH soil meter can be especially useful in lawn care in determining the soil conditions in different areas of your garden and finding the correct lawn seed and fertilizer. Bad spots in the lawn can be caused by poor drainage (wet soil, test the moisture), too much or too little acidity (test the pH), or the wrong light level (test light and use appropriate seed mix (sun/shade).

This module is based on resistance points pressure principle, and it can make the input voltage of red terminal reduce 5 times of original voltage.The max Arduino analog input voltage is 5 V, so the input voltage of this module should be not more than 5 V x 5 = 25 V ( if for 3.3 V system, the input voltage should be not more than 3.3 V x 5 = 16.5 V ).Because the Arduino AVR chip have 10 bit AD, so this module simulation resolution is 0.00489 V (5 V / 1023), and the input voltage of this module should be more than 0.00489 V x 5 = 0.02445 V.

Special Parameters :1?Voltage input range : DC0-25 V2?Voltage detection range : DC0.02445 V-25 V3?Voltage analog resolution : 0.00489 V4?DC input interface : red terminal positive with VCC, negative with GND

The Vibration module based on the vibration sensor SW-420 and Comparator LM393 to detect if there is any vibration that beyond the threshold. The threshold can be adjusted by the on-board potentiometer. When this no vibration, this module output logic LOW the signal indicate LED light, And vice versa. No shock, vibration switch was closed conduction state, output of low output, the green indicator light. Shock, vibration switch instantly disconnected, the output-side output high, the green light does not shine. The output can be directly connected to the microcontroller through the microcontroller to detect high and low, thereby detecting whether the vibration environment, played the role of the police.

FEATURES

• Using SW-420 normally closed type vibration sensor.
• The comparator output signal is clean, good waveform, driving ability, more than 15Ma
• The working voltage of 3.3V-5V
• The output format: digital switching outputs (0 and 1)
• A fixed bolt holes for easy installation
• Small PCB board size: 3.2cm x 1.4cm
• Using a wide voltage LM393 comparator

Water Sensor water level sensor is an easy-to-use, cost-effective high level/drop recognition sensor, which is obtained by having a series of parallel wires exposed traces measured droplets/water volume in order to determine the water level. Easy to complete water to analog signal conversion and output analog values can be directly read Arduino development board to achieve the level alarm effect.

• The lowest rated working voltage: DC4.5 5V-24V
• Maximum operating current: 15 mA (DC 5V)
• Working voltage range: DC 518 v
• Load capacity:10 mA (DC 5V) or less
• Use temperature:80 Degreeor less
• Operating humidity range: 35%90%RH (no frost)
• Allowing pressure: pressure 1.75Mpa
• Temperature: -25+80 c
• External threads: 1/2"
• Kept under the temperature: - 25 + 80 Degree
• Keep humidity: 25% 95% RH
• Attention: Taboo water or water vapor into the circuit board

Apply to water heaters, credit card machines, water vending machine, and flow measurement device.

American MOTOROLA (freescale) company MPX series silicon pressure sensor, are mainly composed of pressure measurement, suitable for use in medical devices, gas pressure control, and other fields, the output digital signal. Its measurement methods can be divided into: gauge pressure (GP), the absolute pressure (A, AP), differential pressure, DP (D). When working in a wide temperature range should be plus compensation network and signal adjustment circuit. The specific type classification. Supply MOTOROLA MPX series pressure sensor.

FEATURES

• The maximum pressure range 10KPa
• Accuracy is 1%
• Bias voltage 20mv
• Full-scale voltage 35mv
• Sensitivity 3.5mV / kPa
• Crushing pressure 70KPa
• Without temperature compensation

A simple Flex Sensor is 2.2" in length. As the sensor is flexed, the resistance across the sensor increases. The resistance of the flex sensor changes when the metal pads are on the outside of the bend (text on inside of bend ). Connector is 0.1" spaced and bread board friendly.The value of the output depends on the bending of the sensor hence, the output we get is an analog value and this output can be send to ADC IC or of Controller. Working and Modifications - The Bending and resistance value are directly related to each other as :o Flat (nominal resistance)o 45degreeBend (increased resistance)o 90degreeBend (resistance increased further)- An Op - Amp is used and outputs either high or low depending on the voltage of the inverting input.In this way you can use the flex sensor as a switch without going through a microcontroller.- A potentiometer can be added to the circuit to adjust the sensitivity range.- Use the sensor as the input of a resistance to voltage converter using a dualsided supply Op - Amp. A negative reference voltage will give a positive output.Should be used in situations when you want output at a low degree of bending.

The LM35 series are precision integrated-circuit temperature devices with an output voltage linearly-proportional to the Centigrade temperature. The LM35 device has an advantage over linear temperature sensors calibrated in Kelvin, as the user is not required to subtract a large constant voltage from the output to obtain convenient Centigrade scaling. The LM35 device does not require any external calibration or trimming to provide typical accuracies

The LM35 datasheet specifies that this ICs are precision integrated-circuit temperature sensors, whose output voltage is linearly proportional to the Celsius (Centigrade) temperature.The LM35 thus has an advantage over linear temperature sensors calibrated in ? Kelvin, as the user is not required to subtract a large constant voltage from its output to obtain convenient Centi-grade scaling. The LM35 does not require any external calibration or trimming to provide typical accuracies of 14?C at room temperature and 34?C over a full 55 to +150?C temperature range.

• You can measure temperature more accurately than a using a thermistor.
• The sensor circuitry is sealed and not subject to oxidation, etc.
• The LM35 generates a higher output voltage than thermocouples and may not require that the output voltage be amplified.
  • It has an output voltage that is proportional to the Celsius temperature.
  • The scale factor is .01V/^oC
  • The LM35 does not require any external calibration or trimming and maintains an accuracy of +/-0.4^oC at room temperature and +/- 0.8^oC over a range of 0^oC to +100^oC.
  • Another important characteristic of the LM35DZ is that it draws only 60 micro amps from its supply and possesses a low self-heating capability. The sensor self-heating causes less than 0.1^oC temperature rise in still air.

The LM35 comes in many different packages, including the following.

• TO-92 plastic transistor-like package,
• T0-46 metal can transistor-like package
• 8-lead surface mount SO-8 small outline package

Features

• Calibrated directly in^oCelsius (Centigrade)
• Linear + 10.0 mV/^oC scale factor
• 0.5^oC accuracy guaranteeable (at +25^oC)
• Rated for full 55^oto +150^oC range
• Suitable for remote applications
• Low cost due to wafer-level trimming
• Operates from 4 to 30 volts
• Less than 60 A current drain
• Low self-heating, 0.08^oC in still air
• Nonlinearity only 14^oC typical
• Low impedance output, 0.1 for 1 mA load

Ametal detectoris anelectronic instrumentwhich detects the presence ofmetalnearby. Metal detectors are useful for finding metal inclusions hidden within objects, or metal objects buried underground. They often consist of a handheld unit with a sensor probe which can be swept over the ground or other objects. If the sensor comes near a piece of metal this is indicated by a changing tone in earphones, or a needle moving on an indicator. Usually the device gives some indication of distance; the closer the metal is, the higher the tone in the earphone or the higher the needle goes. Another common type are stationary "walk through" metal detectors used forsecurity screeningat access points in prisons, courthouses, and airports to detect concealed metal weapons on a person's body.

The simplest form of a metal detector consists of anoscillatorproducing an alternating current that passes through a coil producing an alternatingmagnetic field. If a piece of electrically conductive metal is close to the coil, eddy currentswill be induced in the metal, and this produces a magnetic field of its own. If another coil is used to measure the magnetic field (acting as amagnetometer), the change in the magnetic field due to the metallic object can be detected.

The first industrial metal detectors were developed in the 1960s and were used extensively for mineral prospecting and other industrial applications. Uses includede-mining(the detection ofland mines), the detection of weapons such as knives and guns (especially inairport security), geophysical prospecting, archaeologyandtreasure hunting. Metal detectors are also used to detect foreign bodies in food, and in theconstruction industryto detectsteel reinforcing barsin concrete and pipes and wires buried in walls and floors.