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Testing TTP224 touch pad module using 16*2 LCD DISPLAY i2c module interfacing with arduino nano-KT925

Testing TTP224 touch pad module using 16*2 LCD DISPLAY i2c module interfacing with arduino nano-KT925

KT925

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KIT INCLUDED:


HARDWARE REQUIRED

SOFTWARE REQUIRED

Arduino IDE 1.8.5 (programmable platform for Arduino)

Click To Download :https://www.arduino.cc/en/Main/Software

SPECIFICATIONS

TTP224B 4-CHANNEL CAPACITIVE TOUCH MODULE

  • On-board TTP224 capacitive touch 4 key induction IC
  • On-board 4 road level indicator.
  • Working voltage: 2 V to 5.5 V DC
  • Adjustable output mode, key output mode, longest time and fast/low power output
  • PCB board size: 35(mm) x29 (mm).

ARDUINO NANO

Arduino Pro Mini

Microcontroller

ATmega168

Operating Voltage

3.3V or 5V

Input Voltage

3.35 -12 V (3.3V model) or 5 - 12 V (5V model)

Digital I/O Pins

14 (of which 6 provide PWM output)

Analog Input Pins

8

DC Current per I/O Pin

40 mA

Flash Memory

16 KB (of which 2 KB used by bootloader)

SRAM

1 KB

EEPROM

512 bytes

Clock Speed

8 MHz (3.3V model) or 16 MHz (5V model)

PIN DESCRIPTION

TTP224B 4-CHANNEL CAPACITIVE TOUCH MODULE

VCC: 2V to 5.5V DC

GND: ground

OUT4: high/low output

OUT3: high/low output

OUT2: high/low output

OUT1: high/low output

ARDUINO NANO

RAW

For supplying a raw (regulated) voltage to the board

VCC

The regulated 3.3 or 5 volt supply

GND

Ground pins

RX

Used to receive TTL serial data

TX

Used to transmit TTL serial data

2 and 3

Digital I/O pins. These pins can also be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value

3, 5, 6, 9, 10, and 11

Digital I/O pins. They can also be configured to provide 8-bit PWM output

10, 11, 12 and 13

Digital I/O pins. They can also be configured as SPI pins;

10 - (SS), 11 - (MOSI), 12 - (MISO) and 13 - (SCK)

A0 to A3

Analog input pins

A4 and A5.

Analog input pins. They can also be used as IIC pins;

A4 - (SDA) and A5 – (SCL).

A6 and A7

Analog input pins

Reset

The microcontroller can be reset by bringing this pin low

CIRCUIT CONNECTION

  • Out1 of TTP224 to the Nano D11
  • Out2 of TTP224 to the Nano D10
  • Out3 of TTP224 to the Nano D9
  • Out4 of TTP224 to the Nano D8
  • Ground to the negative rail and Vcc to the positive rail
  • I2C module Vcc to positive rail and ground to negative rail
  • I2C module sda pin to Nano A4 and scl to A5

CODE

Click to see the code or copy the link:

https://docs.google.com/document/d/e/2PACX-1vT7XfN3XPQkFHLgTqkjECB62lWK4TsB1RyxRtlPCCGaFYCPsjmTjW7ApuxuG24Tr3kfiMX6wmrd56dE/pub


WORKING

Upload the code and see the output.