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Control 2 channel relay module using TTP224B- 4 channel keypad module interfacing with arduino nano - KT923

Name: Control 2 channel relay module using TTP224B- 4 channel keypad module interfacing with arduino nano - KT923
Brand: vendor-unknown
SKU: KT923
Price: 2000.00 INR
Availability: InStock

Control 2 channel relay module using TTP224B- 4 channel keypad module interfacing with arduino nano - KT923

SKU:KT923

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KIT CONTENT

Introduction

In this project we are making a home automation project in which we are using 2 channel relay modules using TTP223B touchpad Module interfacing with Arduino Uno. Here we will press the keys on touchpad to control the Relay 1 and Relay 2. If you are looking for applications like control AC lamp or High voltage DC device you need a relay, so let's do something simple to control 2 channel relay modules.

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

NANO
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)

2-channel 5V 10A relay Module

This is a 5V, 10A 2-Channel Relay interface board. It can be used to control various appliances, and other equipment’s with large current. It can be controlled directly with 3.3V or 5V logic signals from a microcontroller (Arduino, 8051, AVR, PIC, DSP, ARM, ARM, MSP430, TTL logic).

It has a 1x4 (2.54mm pitch) pin header for connecting power (5V and 0V), and for controlling the 2 relays. The pins are marked on the PCB:

GND - Connect 0V to this pin.
IN1 - Controls relay 1, active Low! The relay will turn on when this input goes below about 2.0V
IN2 - Controls relay 2, active Low! The relay will turn on when this input goes below about 2.0V
VCC - Connect 5V to this pin. Is used to power the optocouplers

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

2 channel 5v 10A relay Module

COM- Common pin
NC- Normally Closed, in which case NC is connected with COM when INT1 is set low and disconnected when INT1 is high;
NO- Normally Open, in which case NO is disconnected with COM1 when INT1 is set low and connected when INT1 is high.
Terminal 2 is similar to terminal 1, except that the control port is INT2
INT 1- Relay 1 control port
INT 2- Relay 2 control port

CIRCUIT CONNECTION

Connections are as follows :

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 the negative rail
I2C module SDA pin to Nano A4 and SCL to A5 Nano
Nano 5v pin to the positive rail
IN1 of relay module goes to D4
IN2 of relay module goes to D5
Vcc of relay module to positive rail and ground to the negative rail

CODE

Click to see the code or copy the link:

https://drive.google.com/open?id=1zgu_BTbgCzaSqHQe0o0rDVSx10Y3XdPv

WORKING

Upload the code and see the output.

If you are looking for applications like control AC lamp or High voltage DC device you need a relay, so let's do something simple to control Relay 2 channel

Touch Pad 1 and 2 to control Relay #1

Touch Pad 3 and 4 to control Relay #2