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MPR121 Touch Keypad Features Switches are one of the most widely used components in electronics. A keypad is a set of keys or buttons arranged in a block. This capacitor touch keypad includes 12 keys and MPR121 IC on the back of the PCB.Other features:Operating voltage: 3.3VCommunication protocol: I2COperating temperature range: -40°C to +85°C You can download the datasheet of the this module here.[wpdm_package id='20626'] MPR121 Touch Keypad Pinout This Modul...

PCA9685 16 Channel 12-bit PWM Driver Features PCA9685 16-Channel module is very useful and can help a lot when there are insufficient PWM output pins. The most important application is to control servo motors. This module can control a large number of servo motors at the same time.As mentioned, the PCA9685 driver can be used to control 16 servo motors. In fact, this module only uses the I2C pins of the microcontroller. You can even connect 62 of these modules together to get up to 992 PWM outputs usi...

GY-31 TCS3200 Color Sensor Features The TCS3200 color sensor uses 64 photodiodes to detect color. The output of this sensor is a square wave. Color intensity is obtained directly from the frequency of the square wave. These 64 photodiodes consist of 16 diodes with red filter, 16 diodes with green filter, 16 diodes with blue filter and 16 transparent photodiodes without filter. All 16 diodes of each type are connected in parallel. To detect any color, the photodiodes corresponding to that color are activ...

BMP280 Pressure Sensor Features The BMP280 barometric pressure module is a tiny sensor to measure barometric pressure. Its small dimensions and its low power consumption allow for the implementation in battery powered devices such as mobile phones, GPS modules or watches.The key features are:Pressure range: 300 to 1100 hPaCapable of measuring temperaturePressure measurement accuracy: 0.12 hPaSupport I2C communication up to 3.4 MHzSupport SPI communication up to 10 MHzApplications:Indoor navigationWeath...

28BYJ-48 Stepper Motor Features We usually use stepper motors when we need precise control of the motor shaft. These motors can be used in robot arms, 3D printers, CNC machines, etc. Stepper motors convert electrical pulses into discrete mechanical movement. The resolution and rotation speed of the motor shaft depend directly on the frequency of the input pulses. One of the most important advantages is that they can control precisely in an open loop system.28BYJ-48 Stepper motor is one of these motors....

Single Axis 1:120 Gear Motor Features If you work in electronics and robotics field, you have come across DC motors at least once. These motors are one of the most widely used elements in electronics and robotics. These motors convert direct current electrical energy into mechanical energy.An external source provides power for the stator of these motors. As a result, the current flowing through the stator creates a uniform field under the poles. Of course, permanent magnet can supply the stator field, ...

XKC-Y26-V Non-contact Liquid Level Sensor Features The XKC-Y26-V Non-Contact Liquid Level Sensor is a digital output sensor that detects the presence of liquid. There is an LED on the module, which will turn on if liquid is detected, otherwise it turns off. There is also a screw on the body of the module that you can use to adjust the sensitivity of the sensor. This sensor is suitable for dangerous applications such as detection of toxic substances, strong acids, strong alkalis, etc. ...

DHT22 Temperature Humidity Sensor Features The DHT22 Temperature Humidity Sensor is a great choice for measuring ambient temperature and humidity. This sensor consists of a capacitive humidity sensor and a heat resistor. The DHT22 sensor has a wide range of temperature and humidity measurement. It can measure temperature in range of -40 to +125 degrees Celsius with 0.5 degrees Celsius accuracy. Humidity is measured in range of 0 to 100% with 2.5% accuracy. This sensor transmits data through a single di...

DHT21/AM2301 Temperature and Humidity Sensor Features The AM2301 / DHT21 temperature and humidity sensor consists of two sensors: A capacitive humidity sensor and a thermistor. This sensor transmits data using a single digital pin, so it can communicate with the microcontroller using only one digital pin. The sampling frequency is 0.5Hz, which means that you can get new data every two seconds. DHT21/AM2301 Temperature and Humidity Sensor Pinout This Module has 3 w...

TTP224 Capacitive Touch Sensor Module Features This 4 Channel Capacitive Touch Sensor Module uses the TTP224 IC and is actually a combination of 4 capacitive touch sensors. This module has 4 outputs, by touching each button from 1 to 4, the corresponding output will be High. There are also 4 LEDs on the module that will turn on by touching each button. TTP224 Capacitive Touch Sensor Module Pinout This module has 12 pins and 4 touch buttons:6 pins on the Right:OUT1: ...