MIKROE-2551

MIKROE-2551 Datasheet


PID MIKROE-2551

Part Datasheet
MIKROE-2551 MIKROE-2551 MIKROE-2551 (pdf)
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Tamper click

PID MIKROE-2551

Weight 23 g

Tamper click is equipped with SDS001, a low profile side-actuated detect switch, made by C&K company. This is a high-quality, low-current detection switch, which is designed in a form of a push button. The switch itself is very small - only 2mm of switch overtravel length, which coupled with its low actuation force, makes it ideal for using it as a contact detector in various applications - consumer electronics devices, medical devices, smart card detection and similar applications.

Tamper click board is also additionally equipped with the RC filter that minimizes the bouncing effect, making this click a reliable solution for any contact detection application.

How does it work?

Tamper click is equipped with SDS001, low profile side-actuated detect switch. The switch itself acts as a push button and has 2 NO Normally Open terminals, which get shorted when the force is applied to the small piston-shaped button of the switch. These kinds of switches are usually mounted on the edge of the PCB so they can be easily reached by the elements that would apply a pressure to the switch. The applied pressure closes the circuit, connecting the VCC routed to the first pin of the switch, with the INT pin on the mikroBUS The microcontroller is then able to detect a high logical level on the INT pin and the desired task can then be executed. The applied RC filter serves both as a debouncing circuitry and a pull-down for the terminal of the switch, preventing the floating state that way.

The used switch itself is intended to operate with digital signal levels, thus its electrical characteristics are tailored for this purpose low contact resistance of relatively low contact ratings of 100mA at 12V and 50 000 switching cycles before the failure. These attributes make it ideal for digital signal applications, specifically.

Onboard SMD jumper allows using either 5V or 3.3V at the VCC level. This should be selected accordingly to the microcontroller pin voltage capability.

Specifications

Type

Joystick

Contact detector in various applications consumer electronics devices, medical devices, smart card detection and similar applications
modules
detect switch, made by C&K company

Key Features

Light pressure force needed to activate the switch, high number of switching cycles, optimized to be used in digital circuit

Interface

GPIO

Input Voltage 3.3V or 5V

Click board size S x mm

Pinout diagram

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

Notes

Power supply 3V3 7

Ground GND 8

AN RST CS SCK MISO MOSI 3.3V GND

PWM INT TX RX SCL SDA 5V GND

Notes

Switch signal

Power supply

Ground

Tamper click electrical specifications

Min Typ Max Unit

Actuation force
75 gr

Contact resistance

Mechanical and electrical life 50000 cycles

Onboard settings and indicators

Label Name Default

JP1 VCC SEL Left Power supply voltage selection 3V3/5V, left position 3V3, right position 5V
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Datasheet ID: MIKROE-2551 649370