Arduino

The RCWL-0516 Microwave Radar Sensor module has been designed as an alternative to the common PIR motion sensors widely used in burglar alarms and security lights. Like the PIR sensor, this sensor also detects only movements within its detection range.

But instead of sniffing the blackbody radiation from a moving person, this sensor uses a microwave Doppler radar technique to detect moving objects. It has a sensitivity range of ~7 meters. When triggered, its TTL-level output (OUT) pin will switch from LOW (0 V) to HIGH (3.3 V) for a finite time (2 to 3 s) before returning to its idle (LOW) state.

This flexible sensor module can easily be used in conjunction with many microcontrollers and even without a microcontroller at all. It can handle power supply inputs anywhere from 4 to 28 V.

The output pin can be utilized for a multitude of tasks, such as for driving an aural/visual indicator or even linking with the I/O of any 3-V microcontroller for further processing. During construction, avoid any metal part in front of the sensor module. Similarly, always keep a minimum of 1-cm clear space on the front and rear side of the module.

This MPR121 is a capacitive touch sensor controller driven by an I2C interface. The chip can control up to twelve individual electrodes, as well as a simulated thirteenth electrode The MPR121 also features eight LED driving pins, when these pins are not configured as electrodes, they may be used to drive LEDs. There are four jumpers on the bottom of the board, all of which are set (closed) by default. An address jumper ties the ADD pin to the ground, meaning the default I2C address of the chip will be 0x5A. If you need to change the address of the chip (by shorting ADD to a different pin), make sure you open the jumper first. Jumpers also connect SDA, SCL, and the interrupt pin to 10k pull-up resistors. If you do not require the pull-up resistors you can open the jumpers by cutting the trace connecting them.

The KY-013 Analog Temperature Sensor Module is based on the thermistor (resistance increases with the ambient temperature changes) which sense the real-time temperature of the surrounding environment changes. Change in temperature data in analog form can be taken from this module on analog IO pins, then through any microcontroller, it can be easily converted and displayed in Celsius degrees or any other respective Unit.

Infrared transmitting tube, also known as an infrared light-emitting diode, as part of the diode. It is can convert electrical energy directly into the near-infrared. Light (not visible) and the radiation out of the light-emitting device, mainly used in all kinds of photoelectric switch and remote transmission circuits. Infrared transmitting tube structure, the principle of similar to an ordinary light-emitting diode, just use different semiconductor materials. Infrared LEDs are typically used gallium arsenide (GaAs), aluminum gallium arsenic (GaAlAs), and other materials, the use of transparent or light blue, black resin encapsulation.

The GY-273 module is based on the Honeywell HMC5883LIC for low-field magnetic sensing with a digital interface for applications such as lowcost compassing and magnetometry. The HMC5883L includes state-of-threat, high-resolution HMC118X series magneto-resistive sensors plus an ASIC containing amplification; automatic degaussing strap drivers, offset cancellation, and a 12-bit ADC that enables 1 to 2 compass heading accuracy. The I2C serial bus allows for an easy interface.
TheHMC5883Lutilizes Honeywell’s Anisotropic Magnetoresistive (AMR) technology that provides advantages over other magnetic sensor technologies. These anisotropic, directional sensors feature precision in-axis sensitivity and linearity.

These sensors solid-state construction with very low cross-axis sensitivity is designed to measure both the direction and the magnitude of Earths magnetic fields, from milli-gauss to 8 gausses. Honeywells Magnetic Sensors are among the most sensitive and reliable low-field sensors in the industry.

The GY-271 HMC5883L 3-axis Electronic Compass Module Magnetic Field Sensor is designed for low field magnetic sensing with a digital interface and it is perfect to give precise heading information.

This compact sensor fits into small projects such as UAVs and robot navigation systems. The sensor converts any magnetic field to a differential voltage output on 3 axes. This voltage shift is the raw digital output value, which can then be used to calculate headings or sense magnetic fields coming from different directions.

BFD-1000 Five Channel Infrared Tracking Sensor Module is a sensor board designed for use with line follower robots. This module has been sufficient to meet the day-to-day task of tracking, but also with the infrared distance sensor and touch detection sensor, the board makes your robot design able to adapt to the situation easily.

BFD 1000 specifically designed as a black line (white) XunQu, especially suitable for the complex of black and white line, cross black and white line detection, it has 6 roads high sensitivity infrared sensor (5 escapes patrol, 1 road), to the recognition of black and white line accurately, it has the following functions and features:-
1. BFD 1000 integrated no.5 high sensitivity tracking sensor, for the environmental impact of small, can accurate tracking to complex black line (white line), for the simple black line tracking more comfortable.
2. BFD 1000 integrated infrared Barrie sensor, escapes distance can be regulated through the slide rheostat.
3. BFD 1000 has a specially designed touch detection sensor, from the design of the robot is more simple.
4. BFD 1000 all of the output signal to a digital signal (v), conveniently connected with MCU.
5. All sensor output state BFD 1000 have LED lights as instructions, convenient debugging.
6. BFD 1000 support voltage of 3.0-5.5 v meet the demand of most systems.
7. Using the high sensitivity of the sensor, tracking range between 0.5 mm to 40 mm any change and dont need to do any adjustment.

The A3144 Hall Effect Sensor Magnet Detector Switch for Arduino is a switch that will turn on/off in the presence of a magnetic field. If no magnetic field is present, the signal line of the sensor is HIGH (3.5 V). If a magnetic field is presented to the sensor, the signal line goes LOW, at the same time the LED on the sensor lights up. An onboard LED will also indicate the presence of a magnetic field.

Pin Connection:-

Connect the Powerline (middle) to +5V and ground (-) to GND. Connectsignal (s) to any digital pin on the Arduino.