1. Sound sensor ($4.90 USD)
The Sound sensor module is a simple microphone. Based on the power amplifier LM386 and the electret microphone, it can be used to detect the sound strength of the environment. The value of output can be adjusted by the potentiometer.
Features
This module is based on the I2C light-to-digital converter TSL2561 to transform light intensity to a digital signal. Different from traditional analog light sensor, as Grove – Light Sensor, this digital module features a selectable light spectrum range due to its dual light sensitive diodes: infrared and full spectrum. You can switch between three detection modes to take your readings. They are infrared mode, full spectrum and human visible mode. When running under the human visible mode, this sensor will give you readings just close to your eye feelings.
Features:2. Directional light / flame sensor
The Grove - Flame Sensor can be used to detect fire source or other light sources of the wavelength in the range of 760nm - 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. In fire fighting robot game, the sensor plays a very important role, it can be used as a robot eyes to find the fire source.
The module is mainly used to detect the infrared light. It outputs digital signal 0 and 1 through a Comparator output. The output value will be 0 when infrared light is detected. And the sensitivity is adjustable by the precision potentiometer.
Let's use it to control. When the output value is 0, the led will light up.
Features:
This is a multifunctional sensor that gives you temperature and relative humidity information at the same time. It utilizes a DHT11 sensor that can meet measurement needs of general purposes. It provides reliable readings when environment humidity condition inbetween 20% RH and 90% RH, and temperature condition inbetween 0°C and 50°C, covering needs in most home and daily applications that don't contain extreme conditions.
This sensor is designed for comprehensive monitor over indoor air condition. It's responsive to a wide scope of harmful gases, as carbon monixide, alcohol, acetone, thinner, formaldehyde and so on. Due to the measuring mechanism, this sensor can not output specific data to describe target gases' concentrations quantitatively. But it's still competent enough to be used in applications that require only qualitative results, like auto refresher sprayers and auto air cycling systems. This sensor does better in providing qualitative results over a wide scope of target gases. In this demo, we define 4 statuses for reference in the .cpp file. They are:
4. PIR Motion Sensor Module ($7.90 USD)
This Moisture Sensor can be used to detect the moisture of soil or judge if there is water around the sensor, let the plants in your garden reach out for human help. They can be very easy to use, just insert it into the soil and then read it. With the help of this sensor, it will be realizable to make the plant remind you : hey, i am thirsty now, please give me some water.
6. IR Breakbeam Sensors (Adafruit)
Wiring requirements
- 3.3V or 5V power
- Arduino
Possible uses:
Key Facts:
Water flow sensor consists of a plastic valve body, a water rotor, and a hall-effect sensor. When water flows through the rotor, rotor rolls. Its speed changes with different rate of flow. The hall-effect sensor outputs the corresponding pulse Signal.
You will need Seeeduino / Arduino ,Water Flow Sensor,10K resistor,a breadboard and some jumper wires.
Wiring up the Water Flow Sensor is pretty simple. There are 3 wires: Black, Red, and Yellow. Black to the Seeeduino's ground pin Red to Seeeduino's 5v pin The yellow wire will need to be connected to a 10k pull up resistor.and then to pin 2 on the Seeeduino.
Grove - Alcohol Sensor is a complete alcohol sensor module for Arduino or Seeeduino. It is built with MQ303Asemiconductor alcohol sensor. It has good sensitivity and fast response to alcohol. It is suitable for making Breathalyzer. This Grove implements all the necessary circuitry for MQ303A like power conditioning and heater power supply. This sensor outputs a voltage inversely proportional to the alcohol concentration in air.
Existing Sensor Wiki:
http://www.sensorwiki.org/doku.php/sensors/introduction
Accelerometer
Accelerometers can measure static, or dynamic acceleration forces. Static forces are measures like gravity which is constantly pulling, while dynamic forces are measured by movement or vibration of the sensor. It can also measure tilt based on the relative force to the ground. These are useful for monitoring or sensing the movement of an object. There are multiple ways to make accelerometers. The two most common are using crystals that when accelerated move closer and create an electric charge, or sensing in capacitance and converting that to a charge.
Measures
Proximity Sensors
A proximity sensor is a sensor able to detect the presence of nearby objects without any physical contact. A proximity sensor often emits an electromagnetic field or a beam of electromagnetic radiation (infrared, for instance), and looks for changes in the field or return signal. The object being sensed is often referred to as the proximity sensor's target. Different proximity sensor targets demand different sensors. For example, a capacitive or photoelectric sensor might be suitable for a plastic target; an inductive proximity sensor always requires a metal target. The maximum distance that this sensor can detect is defined "nominal range". Some sensors have adjustments of the nominal range or means to report a graduated detection distance. Proximity sensors can have a high reliability and long functional life because of the absence of mechanical parts and lack of physical contact between sensor and the sensed object. Proximity sensors are commonly used on smartphones to detect (and skip) accidental touchscreen taps when held to the ear during a call.[1] They are also used in machine vibration monitoring to measure the variation in distance between a shaft and its support bearing. This is common in large steam turbines, compressors, and motors that use sleeve-type bearings.
Types:
Applications:
Parking sensors, systems mounted on car bumpers that sense distance to nearby cars for parking
Ground proximity warning system for aviation safety
Vibration measurements of rotating shafts in machinery [2]
Top dead centre (TDC)/camshaft sensor in reciprocating engines.
Sheet break sensing in paper machine.
Anti-aircraft warfare
Roller coasters
Conveyor systems
Beverage and food can making lines[3]\
Improvised Explosive Devices or IEDs
Mobile devices
Light Sensor
Two Modes: Light Mode and Dark Mode. Light mode sends a higher signal based on more light,
And dark mode sends a higher signal based on the darker it is.
Wireless ID Sensor
An RFID device that supports sensing and computing: a microcontroller powered by radio-frequency energy.[1] That is, like a passive RFID tag, WISP is powered and read by a standard off-the-shelf RFID reader, harvesting the power it uses from the reader's emitted radio signals. To an RFID reader, a WISP is just a normal EPC gen1 or gen2 tag; but inside the WISP, the harvested energy is operating a 16-bit general purpose microcontroller. The microcontroller can perform a variety of computing tasks, including sampling sensors, and reporting that sensor data back to the RFID reader. WISPs have been built with light sensors, temperature sensors, and strain gauges. Some contain accelerometers.
Applications:
Occupancy/Motion Light Sensors
Turn lights on and off based on Motion Detection.
Inertial Measurement Units
Measures Velocity, Orientation, and Gravitational forces using a combination of accelerometers, gyroscopes, and sometimes magnetometers. Mostly used for navigation systems.
Current Sensor
Current sensors measure electric current in a wire and creates a proportional signal from it. The signal can be either analog or digital. The resulting signal can be used for a variety of purposes ranging from being utilized in a control system, analyzed in a data set, or display active current flows.
Alternating Currents:
Direct Currents:
Gyroscope
Measures and maintains orientation through preserving angular momentum.
Uses
Flex Sensor
Flex sensors are passive resistive devices that can be used to detect bending or flexing. The flex sensor shown in this article is a bi-directional flex sensor that decreases its resistance in proportion to the amount it is bent in either direction.
Measures