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Tuya Sandwich Door Sensor Board

Last Updated on : 2020-11-08 09:03:57download

The Tuya Sandwich contact sensor function board is the application part of the Sandwich development board, which helps you quickly implement various smart hardware prototypes. The Tuya Sandwich contact sensor function board needs to be used together with the control board and the power board.

Tuya Sandwich Door Sensor Board

Introduction to key components

The main component of the function board is a paster plastic-package reed switch. It determines the open and closed status by the logic levels generated through moving the magnet close to or away from the reed switch. The logic level of DOOR turns high when the reed switch is closed, and turns low when open.

Components Description
S1 (MK16-B-2) Paster plastic-package reed switch. The AT value ranges from 10 to15.

Introduction to I/O ports

See the following table for the pins that are used in the Tuya Sandwich contact sensor function board:

I/O Function
VCC Power supply pin
GND Power ground
DOOR Contact sensor signal. The logic level is high when the contact sensor is closed, and low when the contact sensor is open.

Technical requirements

The power supply voltage refers to the operating voltage range of the development board: 2.2–3.6V.

Schematic diagram and PCB

  • Schematic diagram of Tuya Sandwich contact sensor development board:

    Tuya Sandwich Door Sensor Board

  • PCB of Tuya Sandwich contact sensor development board:

    Tuya Sandwich Door Sensor Board

Things to note

  • The function board needs to be used with the control board and the power supply board.
  • Do not insert the I/O pin into the power port to prevent a breakdown of the corresponding I/O port of the module.

Reference