MIKROE-2781

MIKROE-2781 Datasheet

PID MIKROE-2781 Weight 30 g

Part	Datasheet
MIKROE-2781	MIKROE-2781 (pdf)

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Microwave click PID MIKROE-2781 Weight 30 g Microwave click detects movement, thanks to the PD-V11 a 24GHz microwave motion sensor. The typical use for Microwave click is a proximity or motion detector in various applications and devices. The Microwave click can detect movement or proximity by using the Doppler effect. The onboard microwave motions sensor transmits waves, and picks them back as they hit an object, with their frequency changed. Microwave click does not need optical visibility to work, and the waves can penetrate many kinds of barriers and obstacles. What's on the Microwave click How the Microwave click works Microwave click detects movement of objects utilizing Doppler effect. When the PD-V11 microwave sensor is powered on, it starts transmitting radio waves of fixed frequency. As the waves hit a moving object they are reflected back toward PD-V11 microwave motion sensor, with their frequency changed, depending on speed and direction of object's movement. The Doppler effect - a change in frequency of a wave for the observer and object move closer or further apart from one another. A typical example of the Doppler effect is when a vehicle with siren passes and you hear the pitch drop of the siren. The PD-V11 microwave motion sensor low power consumption, low noise, and a low wireless power output. See the datasheet to learn more. The PD-V11 microwave motion sensor picks up reflected waves and converts them to a voltage signal. This signal has the magnitude of several hundred microvolts, so it's sent to the MCP6022 which amplifies the signal, in order to make it readable over the Analog pin on the mikroBUS . This signal is amplified up to 3.3V. Once amplified, the signal is routed to the Analog pin OUT on the mikroBUS line. The proximity of the object can be determined by measuring the amplitude of this signal, and speed/direction by determining its frequency. The range at which Microwave click can detect movement depends on the way the algorithm is written see the Software Support section . Specifications Type Key Features Interface Input Voltage Click board size Motion Frequency 24GHz Radiated power EIRP 2.5mW noise mVrms current consumption 35 mA Analog L x mm Pinout diagram This table shows how the pinout on Microwave click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns . Notes Amplified sensed signal output Ground Notes OUT 1 AN PWM 16 NC NC 2 RST INT 15 NC NC 3 CS TX 14 NC NC 4 SCK RX 13 NC NC 5 MISO SCL 12 NC NC 6 MOSI SDA 11 NC NC 7 3.3V 5V 10 +5V GND 8 GND 9 GND Power supply Ground Onboard settings and indicators Label Name Default PWR Power - Power LED, lights green when the power supply is established properly. Software Support We provide a demo application for the Microwave click on LibStock, as well as a demo application example , developed using MikroElektronika compilers. The demo application can run on all the main MikroElektronika development boards with minimal change to the code depending on the microcontroller used. Examples Description The application is composed of three sections :

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Microwave click

PID MIKROE-2781 Weight 30 g

Microwave click detects movement, thanks to the PD-V11 a 24GHz microwave motion sensor. The typical use for Microwave click is a proximity or motion detector in various applications and devices. The Microwave click can detect movement or proximity by using the Doppler effect. The onboard microwave motions sensor transmits waves, and picks them back as they hit an object, with their frequency changed. Microwave click does not need optical visibility to work, and the waves can penetrate many kinds of barriers and obstacles.

What's on the Microwave click

How the Microwave click works

Microwave click detects movement of objects utilizing Doppler effect. When the PD-V11 microwave sensor is powered on, it starts transmitting radio waves of fixed frequency. As the waves hit a moving object they are reflected back toward PD-V11 microwave motion sensor, with their frequency changed, depending on speed and direction of object's movement. The Doppler effect - a change in frequency of a wave for the observer and object move closer or further apart from one another. A typical example of the Doppler effect is when a vehicle with siren passes and you hear the pitch drop of the siren.

The PD-V11 microwave motion sensor low power consumption, low noise, and a low wireless power output. See the datasheet to learn more.

The PD-V11 microwave motion sensor picks up reflected waves and converts them to a voltage signal. This signal has the magnitude of several hundred microvolts, so it's sent to the MCP6022 which amplifies the signal, in order to make it readable over the Analog pin on the mikroBUS . This signal is amplified up to 3.3V.

Once amplified, the signal is routed to the Analog pin OUT on the mikroBUS line. The proximity of the object can be determined by measuring the amplitude of this signal, and speed/direction by determining its frequency.

The range at which Microwave click can detect movement depends on the way the algorithm is written see the Software Support section .

Specifications

Type

Key Features

Interface Input Voltage Click board size

Motion Frequency 24GHz Radiated power EIRP 2.5mW noise mVrms current consumption 35 mA Analog

L x mm

Pinout diagram

This table shows how the pinout on Microwave click corresponds to the pinout on the mikroBUS socket the latter shown in the two middle columns .

Notes Amplified sensed signal
output

Ground

Notes

OUT 1 AN PWM 16 NC

NC 2 RST INT 15 NC

NC 3 CS

TX 14 NC

NC 4 SCK RX 13 NC

NC 5 MISO SCL 12 NC

NC 6 MOSI SDA 11 NC

NC 7 3.3V 5V 10 +5V

GND 8 GND 9 GND

Power supply

Ground

Onboard settings and indicators

Label Name Default

PWR Power -

Power LED, lights green when the power supply is established properly.

Software Support

We provide a demo application for the Microwave click on LibStock, as well as a demo application example , developed using MikroElektronika compilers. The demo application can run on all the main MikroElektronika development boards with minimal change to the code depending on the microcontroller used.

Examples Description

The application is composed of three sections :

Notice: we do not provide any warranties that information, datasheets, application notes, circuit diagrams, or software stored on this website are up-to-date or error free. The archived MIKROE-2781 Datasheet file may be downloaded here without warranties.

Datasheet ID: MIKROE-2781 649431