Gravity: Starter Kit for Arduino

The Grove Starter Kit for Arduino is one of the best Arduino starter kits for beginners. It includes an Arduino-compatible base shield and 14 additional Arduino sensors and accessories. With this Grove starter kit, you can create any Arduino project you want.

Sound detection module for Arduino projects, smart cars. Analogical Acoustic Sensor 4-Pin Microphone Sound Detector Module features:
- Adjustable High Sensitivity Acoustic Sensor
- LM393 comparator chip
- Integrated indicator LED
- AO analog output, output voltage signal in time real microphone
- DO digital output, sensitivity adjustable through potentiometer
- Frequency Range between 30 and 15000 Hz
- Power 4 ~ 6V
- Measurements 36x16x15mm

It consists of three principles of induction of primary colors, if you know the composition of all types of color values, you can know the color of the test object.
For TCS230, a color filter is chosen, only a certain primary pass is allowed, it is stopped by another color. For example, when choosing a red filter, the incident light can only be stopped in red, blue and green, so you can get the intensity of the red beam of light.
For the same reason, the choice of other filters, can obtain the intensity of blue light and green light.
Through these three values, the color of the light can be projected onto a TCS230 sensor. Color Recognition Sensor GY-31 TCS230 TCS3200 features:
- Operating voltage: 3 - 5 VDC
- Model GY-91
- Chip TCS230 TCS3200

The MAX9812 is a sound amplifier specially designed to treat the signal coming from microphones.
We can use it together with Arduino to measure sound from a processor like Arduino.
When we saw the modules with microphone we commented that, in general, the signal generated is too low to be registered correctly.
If we want to be able to measure sounds, we will have to amplify the signal. The MAX9812L has single / dual inputs, fixed gain of 20dB, bandwidth of 400 kHz, low noise and low signal distortion 0.015% THD.
There are two models, its supply voltage is 2.7V to 3.6V.
We can use the sensors with MAX9812 for applications that require measuring the intensity or frequency of the sound.

Capsule Electret Condenser Microphones 9.5 MIC features:
- Measures: 9.7 x 6.7mm
- Impedance: 1.5kΩ
- Working current: 0.5mA
- Working voltage: 4.5V (1.5-10V)
- Bandwidth: 50 ... 16000Hz
- Signal to noise ratio: ‰¥58dB
- Sensitivity: -42 ± 3dB
- Sensitivity tolerance: ± 3dB
- Distance between terminals: 2.54mm

Ultrasonic sensors overcome many of the weaknesses of IR sensors by providing distance measurement regardless of the color and illumination of obstacles. Ultrasound Distance Sensor HC-SR05 features:
- Power supply: 4.5-5.5 VDC
- Supply current: 10 to 40 mA
- Activation pin format: 10 μs digital pulse
- Echo Pin Output: 0-Vcc
- Echo Pin Format: the output is DIGITAL and directly proportional with range. See our conversion formula below
- Measurement range: 2cm to ~ 4.5m
- Measurement resolution: 0.3cm
- Measurement angle: up to 15 degrees
- Measurement speed: 40 Hz,
- Connector: standard 5-pin male connector that can be connected directly to boards or breadboards:
- 1: VCC
- 2: Trig
- 3: Echo

This photo-resistance module is very sensitive to ambient light. Activation of the microcontroller or retransmission modules,
The brightness module of the ambient light reach the set threshold, the output is high when the ambient light exceeds the set threshold.
The DO output can be connected directly to a microcontroller to detect the light environment and create a light control switch.
It has a speed range of 0% to 100%. Digital Light Intensity Sensor with Photo Resistance with LM393 Controller features:
- Operating voltage: 3.3 - 5 V
- Input current: 50 mA
- Use a very sensitive photo resistance
- Use a LM393 wide voltage comparator, high quality output signal
- Adjustable potentiometer can regulate the brightness of detected light

Gravity: IO Expansion Shield for Arduino V7.1 is a shield board for Arduino that expands the capabilities of the I/O pins.  Among other things, it has each pin with a power pair, the ability to include a 3.3 V voltage converter, a separate connector for I2C interfaces, SPI and a socket for XBee modules.

The sensor measures the current flowing in the cable without cutting it. The measurement is made on a single insulated wire, the output is an analog voltage from 0 to 1 V. Sensor SCT-013-050, Non-Invasive 50A AC Current Meter

LM35 Temperature Sensor LM35DZ TO92 features:
- The output is linear and each degree Celsius equals 10 mV
- Power supply from 4 to 30 Vdc
- Connection through analog input
- Temperature range from 0ºC to 100ºC
- Linearity +10 mV / ºC
- Quantity: 1 unit