The PAJ7620U2 Gesture Sensor allows to recognize up to 9 gestures via the I2C interface, it is compatible with 3.3V/5V levels.
Compare with solutions like APDS-9960, this module is faster, more accurate, while recognizing more gestures with higher anti-interference capability. It suits for low power applications such as smart home, robot interaction, etc.

The PAC7620 integrates gesture recognition function with general I2C interface into a single chip forming an image analytic sensor system. It can recognize 9 human hand gesticulations such as moving up, down, left, right, forward, backward, circle-clockwise, circle-counter clockwise, and waving. It also offers built-in proximity detection in sensing approaching or departing object from the sensor. The PAC7620 is designed with great flexibility in power-saving mechanism, well suit for low power battery operated HMI devices. The PAJ7620 is packaged into module form in-built with IR LED and optics lens as a complete sensor solution Key Features Gesture/Cursor/Image mode

Application:

1. Smart home
2. office and education
3. Robot interaction
4. toys
5. motion sense gaming devices
6. Automobile Applications
7. Tablets proportional computer

Features: 

1. Based on PAJ7620U2 sensor
2. directly recognizes 9 basic gestures
3. supports gesture interrupt output
4. Embedded infrared LED and optical lens
5. be able to work in low-light even dark environment
6. I2C interface requires only two signal pins to control
7. Onboard voltage translator, compatible with 3.3V/5V logic level
8. Gesture/Cursor/Image modes
9. Built-in proximity detection
10. Flexible power saving scheme
11. Ambient light immunity
12. Ambient light noise cancellation

Package Includes:

1 x Waveshare PAJ7620U2 Gesture Sensor
1 x PH2.0 5PIN wire

AGS10 sensor is a MEMS type ethanol gas sensor with calibrated digital signal output. It uses dedicated digital module acquisition technology and gas sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. 

This MEMS gas sensor has the characteristics of low power consumption, high sensitivity, fast response, high reliability and stability, low cost, and a simple driving circuit. 

Features: 

1. Lifespan >6 years (@25 degrees in clean air)  
2. Sensor category MEMS semiconductor metal oxide sensor 
3. Output unit ppb or grade 
4. Measuring range 0-9999 
5. Typical accuracy (25℃ 50%RH) 25% F.S 
6. Standard test gas ethanol 

Package Includes:

1 x TVOC Sensor Model AGS10

This is an Arduino compatible alcohol sensor module from DFRobot with a 0-5ppm measuring range, supporting I2C and UART outputs. Aiming at fast and accurate detection of alcohol gas concentration in the air, the sensor is well applicable to the small alcohol concentration measurement in the breathalyzer, smart vehicle, and so on. Based on the electrochemistry principle, this alcohol sensor has been calibrated before the factory. It is characterized by strong anti-interference, high stability, and sensitivity and up to 2 years of service life. The module supports 0.01ppm(10ppb) resolution and 3.3~5.5V wide-range voltage input and works well with mainstream controllers like Arduino, ESP32, and Raspberry Pi. With the easy-to-use Gravity interface and the sample program provided by us, you can conveniently build your alcohol concentration detector using this sensor.

Features:

1. Detected Gas: alcohol.
2. Interfering Gas: benzene(C6H6), toluene(C7H8), acetic acid(CH3COOH), hydrogen sulfide(H2S), carbon monoxide(CO).
3. Factory calibrated, accurate data
4. High sensitivity, low power
5. Stable performance, anti-interference
6. I2C and UART outputs
7. Excellent linear output
8. Long service life
9. Compatible with 3.3~5V controllers
10. Reverse-connection protection

Specifications:

1. Operating Voltage: 3.3～5.5V DC.
2. Power: 0.05W（5V).
3. Signal Output: I2C, UART(0~3V).
4. Response Time: ≤60s.
5. Measuring Range: 0~5ppm.
6. Resolution: ≤0.01ppm（10ppb）.
7. Preheat Time: ≤3min.
8. Recover Time: ≤60s.
9. Operating Temperature: -20～50℃.
10. Operating Humidity: 15～90%RH (No condense).
11. Storage Temperature: 0~25℃.
12. Service Life: >2 years(In the air).
13. Board Dimension: 27mm×37mm/1.06×1.46″.

Packages Includes:

1 x DF Robot Gravity Alcohol Sensor (0-5ppm).

The turbidity of water refers to the degree of turbidity caused by suspended substances such as silt, clay, organic matter, plankton and microorganisms contained in the water. Industrial-grade turbidity sensors or turbidity meters are expensive, and the cost is too high in the design of electronic products. Therefore, we have selected a turbidity sensor that is widely used in household appliances, washing machines, and dishwashers. The sensor uses optical principles to comprehensively judge the turbidity through the light transmittance and scattering rate in the solution. Inside the sensor is an infrared tube. When light passes through a certain amount of water, the amount of light transmission

depends on the degree of dirtiness of the water. The dirtier the water, the less light it transmits. Light

The receiving end converts the intensity of the transmitted light to the corresponding current size. The transmitted light is more and the current is larger. On the contrary, the transmitted light is less and the current is smaller.

The turbidity sensor module converts the current signal output by the sensor into a voltage signal and performs AD conversion data processing through the single-chip microcomputer. The remodelling module has analogue and digital output interfaces. The analogue quantity can be sampled and processed by the single-chip A/D converter to know the current water pollution. The digital value can be adjusted through the potentiometer on the module to adjust the trigger threshold. When the turbidity reaches the set threshold, the D1 indicator will be lit, the output of the sensor module changes from high level to low level, and the single-chip monitors the change in level To determine whether the turbidity of the water exceeds the standard, so as to warn or link other equipment. The module is inexpensive, easy to use, and has a high measurement accuracy

It can be used to measure the degree of water pollution of products such as washing machines and dishwashers; it can also be used in industrial field control, environmental sewage collection and other occasions that require turbidity detection and control.

PIN DIAGRAM

The composition of the turbidity sensor module is shown below. The module is connected to the turbidity sensor through the 3Pin XH-2.54 connector. Adjust the knob of 10K blue potentiometer to adjust the trigger threshold of digital output.

The module pin definitions are as follows:

1. VCC: Positive supply voltage, 5V cannot be used 3.3V
2. AO: analogue signal output, output voltage range 0~5V
3. DO: digital signal output is less than the set value and outputs high level; greater than the set value and outputs low level
4. GND: negative supply voltage

Specification:

1. Working voltage: 5.00V DC
2. Working current: 40mA (MAX)
3. Response time: <500ms
4. Insulation resistance: 100MΩ (Min)
5. Analog output: 0~4.5V;
6. Digital output: high/low level signal (the corresponding threshold can be selected by adjusting the potentiometer)
7. Operating temperature: -20℃~90℃
8. Module size: 38.6mm*22.1mm

Package Includes:

1 x Turbidity Sensor Suspended Turbidity Value Detection Module Kit

The sensor on Grove – Gesture is PAJ7620U2 that integrates gesture recognition function with general I2C interface into a single chip. It can recognize 9 basic gestures, and these gestures information can be simply accessed via the I2C bus.

We can use the gesture to adjust the sound volume, control a robot. We can also make a remote-control unit, which is able to operate many devices at the same time using gestures 

Application: You can use Gesture as an input device to control another grove, or a computer, mobile phone, smart car, robot, and more with a simple swipe of your hand.

Getting Started with SeeedStudio Grove Gesture

Features: 

1. Built-in proximity detection
2. Various mainboards support: Arduino UNO/Seeeduino/Arduino Mega2560
3. 9 Basic gestures
   1. Up
   2. Down
   3. Left
   4. Right
   5. Forward
   6. Backwards
   7. Clockwise
   8. Count Clockwise
   9. Wave

Package Includes :

1 x SeeedStudio Grove Gesture

The AGS10ET sensor is a MEMS ethanol gas sensor with a calibrated digital signal output. It uses dedicated digital module acquisition technology and gas sensing technology to ensure that the product has extremely high reliability and excellent long-term stability. 

The alcohol sensor is technically referred to as a MQ3 sensor which detects ethanol in the air. When a drunk person breathes near the alcohol sensor it detects the ethanol in his breathe and provides an output based on alcohol concentration. If there is more alcohol concentration more LED’s would lit

This MEMS gas sensor has the characteristics of low power consumption, high sensitivity, fast response, high reliability and stability, low cost, and a simple driving circuit. 

Features: 

1. High-cost performance
2. Good long-term stability
3. Excellent quality
4. Ultra-fast response
5. High sensitivity
6. Fast response and recovery time
7. Long life
8. Digital signal output
9. Accurate calibration

Package Includes:

1 x Alcohol Sensor Model AGS10ET