ماژول سنسور خازنی تاچ 4 تایی TTP224 دارای 4 کلید لمسی که با لمس کردن این کلیدها، ظرفیت خازن تغییر میکند و توسط سنسور تشخیص داده میشود. این ماژول تاچ خازنی که جایگزین مناسبی برای کلیدهای فشاری سنتی است از ولتاژ 2.4 تا 5.5 ولت تغذیه میکند. پدهای
لمسی موجود بر ماژول TTP224 را میتوان با سیم و تقریباً هر ماده رسانایی گسترش داد. بنابراین میتوانید آن را به راحتی به پروژه های خود اضافه کنید.
Description:
This Capacitive Touch Module uses the touch-sensing IC TTP224 to add capacitive touch to your project. Just power with 2.4 to 5.5VDC and touch the pad to activate the sensor. These touch switches interface easily to any project - with or without a microcontroller.
When a capacitive load (such as a human hand) is in close proximity to the sense-pad, the sensor detects the change in capacitance and activates the switch. Custom sense-pads can be made from nearly any conductive material and these sensors can detect touch through thin layers of non-conductive materials such as glass, plastic, fabric or even wood. So, you can make this sensor hidden in the wall, tabletop and other places, which allows you to remove the conventional push-buttons troubles.
There are totally 4 pads on this module, these sense-pads can be extended with wire and almost any conductive material so that you can add 4 touch switch easily for your project.
Application:
Wide consumer products
Button key replacement
Features:
Operating voltage 2.4V~5.5V
Built-in regulator with external enable/disable option
Operating current, @VDD=3V no load
At low power mode typical 2.5uA
At fast mode typical 9.0uA
@VDD=3V operating voltage :
The response time about 100mS at fast mode, 200mS at low power mode for TTP224
The response time about 60mS at fast mode, 160mS at low power mode for TTP224N
Sensitivity can adjust by the capacitance(0~50pF) outside for each touch pad
Provides Fast mode and Low Power mode selection by pad option(LPMB pin)
Provides direct mode or toggle mode, CMOS output or open drain output, active high or active low by pad option(TOG/OD/AHLB pin).
Provides 2 output pins TPQ0D, TPQ2D that have no diode protection, active low
Have the maximum on time 120sec/64sec/16sec/infinite by pad option(MOT1, MOT0 pin)
After power-on have about 0.5sec stable-time, during the time do not touch the key pad, and the function is disabled
Auto calibration for life, and the re-calibration period is about 4.0sec, when key has not be touched
Onboard TTP224 capacitive touch sensor IC 4 keys
4 board-level status indicator
Working voltage: 2.4V - 5.5V
Advanced Pins breakout, so that the output mode and working mode selectable
Low power selection
Size: 35mm x 29mm