The function of this sketch is same as the sketch posted on May. 11, 2014, but using I2C LCD Keypad Shield as the output device.
Sketch
/*
SimpleReceiveI2CLCD
This sketch displays text strings received using VirtualWire
Connect the Receiver data pin to Arduino pin 11
Modified by Befun Hung on Nov. 09, 2014
Use I2C LCD Keypad Shield as the output
*/
#include <VirtualWire.h>
#include <Wire.h>
#include <LiquidCrystal_I2C.h>
// #define BACKLIGHT_PIN 13
LiquidCrystal_I2C lcd(0x20); //Set the LCD I2C address
// LiquidCrystal_I2C lcd(0x38, BACKLIGHT_PIN, POSITIVE);
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
void setup()
{
// pinMode(BACKLIGHT_PIN, OUTPUT);
// digitalWrite(BACKLIGHT_PIN, HIGH);
// set up the LCD's number of columns and rows:
lcd.begin(16, 2); //initialize the lcd
// Print a message to the LCD.
lcd.home(); //go home
lcd.print("Device is ready!");
//
Serial.begin(9600);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
lcd.clear();
Serial.print(counter);
Serial.print(": ");
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 0);
lcd.print(counter);
lcd.print(":");
lcd.setCursor(0,1);
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
lcd.print(char(message[i]));
}
Serial.println();
counter++;
}
}
Showing posts with label Frequency. Show all posts
Showing posts with label Frequency. Show all posts
2014/10/29
Arduino Sketch for Address Settable RF Wireless Power Supply Socket/Switch
Updated Sketch (Nov. 15,2014)
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Nov. 14, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication - Updated Sketch)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power supply socket
// Modified by Befun Hung on Nov. 12, 2014 to use
// 4 digital pins(D2-D5) to set node ID1 and
// 4 digital pins(D6-D9) to set node ID2 by using 10K pull-up resistors.
// Totally 8x16x16=2,048 devices can be used for wireless communication
// For practical use 8x10x10=800 devices can be controlled using digital key of 3x4 telephone keypad
// Wire and DIP switch connections from high bit to low bit are A1, A2, A3, D2, D3, D4, D5, D6, D7, D8 and D9
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
// Don't run this sketch on Arduino Pro Mini, it may reboot repeatedly owing to bootloader not supporting watchdog
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '*'
#define keyOff '#'
//Create and Define Global Variables
int bits=4, netID, nodeID1, nodeID2;
int dipNet[] = {15, 16, 17}; // DIP Switch Pins for Net ID
int dipNode1[] = {2, 3, 4, 5}; // DIP Switch Pins for Node ID1
int dipNode2[] = {6, 7, 8, 9}; // DIP Switch Pins for Node ID2
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
// delay(100);
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode1[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID1 = node1Address(bits);
// delay(100);
Serial.print("Node ID1: ");
Serial.println(nodeID1);
for(i = 0; i<bits; i++){
pinMode(dipNode2[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID2 = node2Address(bits);
// delay(100);
Serial.print("Node ID2: ");
Serial.println(nodeID2);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 4)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID1 + '0')) && (message[2] == (nodeID2 + '0')))
{
if (message[3] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[3] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used A1-A3)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D2-D5)
byte node1Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode1[i])); // read the input pin
}
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D6-D9)
byte node2Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode2[i])); // read the input pin
}
return j; //return address
}
Sketch
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Oct. 29, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power socket
// The sketch uses 3 analog pins(A1-A3) to set net ID and 8 digital pins(D2-D9) to set node ID by using 10K pull-up resistors.
// Totally 8x256=2,048 devices can be used for wireless communication
// When using a 3x4 telephone keypad, 8x10(0-9)=80 devices can be used
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '1'
#define keyOff '0'
//Create and Define Global Variables
int bits=8;
byte netID, nodeID;
int dipNet[] = {15, 16, 17}; //DIP Switch Pins for Net ID
int dipNode[] = {2, 3, 4, 5, 6, 7, 8, 9}; //DIP Switch Pins for Node ID
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode[i], INPUT); // sets the digital pin 2-9 as input
}
nodeID = nodeAddress(bits);
Serial.print("Node ID: ");
Serial.println(nodeID);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 3)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID + '0')))
{
if (message[2] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[2] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node Address from DIP Switch (8 positions used D2 - D9)
byte nodeAddress(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode[i])); // read the input pin
}
return j; //return address
}
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Nov. 14, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication - Updated Sketch)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power supply socket
// Modified by Befun Hung on Nov. 12, 2014 to use
// 4 digital pins(D2-D5) to set node ID1 and
// 4 digital pins(D6-D9) to set node ID2 by using 10K pull-up resistors.
// Totally 8x16x16=2,048 devices can be used for wireless communication
// For practical use 8x10x10=800 devices can be controlled using digital key of 3x4 telephone keypad
// Wire and DIP switch connections from high bit to low bit are A1, A2, A3, D2, D3, D4, D5, D6, D7, D8 and D9
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
// Don't run this sketch on Arduino Pro Mini, it may reboot repeatedly owing to bootloader not supporting watchdog
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '*'
#define keyOff '#'
//Create and Define Global Variables
int bits=4, netID, nodeID1, nodeID2;
int dipNet[] = {15, 16, 17}; // DIP Switch Pins for Net ID
int dipNode1[] = {2, 3, 4, 5}; // DIP Switch Pins for Node ID1
int dipNode2[] = {6, 7, 8, 9}; // DIP Switch Pins for Node ID2
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
// delay(100);
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode1[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID1 = node1Address(bits);
// delay(100);
Serial.print("Node ID1: ");
Serial.println(nodeID1);
for(i = 0; i<bits; i++){
pinMode(dipNode2[i], INPUT); // sets the digital pin 2-5 as input
}
nodeID2 = node2Address(bits);
// delay(100);
Serial.print("Node ID2: ");
Serial.println(nodeID2);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 4)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID1 + '0')) && (message[2] == (nodeID2 + '0')))
{
if (message[3] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[3] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used A1-A3)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D2-D5)
byte node1Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode1[i])); // read the input pin
}
return j; //return address
}
//Create Node1 Address from DIP Switch (4 positions used D6-D9)
byte node2Address(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode2[i])); // read the input pin
}
return j; //return address
}
Sketch
// Released by abocanegra on Dec. 11, 2009 using 4 pins, "DIP Switch 8 Position to Address Sensor" in Arduino Forum
// This sketch uses VirtualWire
// Connect the Receiver data pin to Arduino pin 11
// Modified by Befun Hung on Oct. 29, 2014 by combining sketches on May. 11, 2014 (Arduino RF Wireless Message Display)
// and Jul. 30, 2014 (Use DIP Switch To Set Arduino Device Net ID And Node ID for Wireless Communication)
// and removing LCD Keypad Shield display function as a new sketch for Arduino addressable RF wireless power socket
// The sketch uses 3 analog pins(A1-A3) to set net ID and 8 digital pins(D2-D9) to set node ID by using 10K pull-up resistors.
// Totally 8x256=2,048 devices can be used for wireless communication
// When using a 3x4 telephone keypad, 8x10(0-9)=80 devices can be used
// A0 is reserved for analog sensor or digital sensor/actuator
// A4-A5 are reserved for I2C
// D0-D1 are reserved for RX/TX
// D13 is used for singal output
#include <VirtualWire.h>
// include avr/wdt for watchdog reset
#include <avr/wdt.h>
// include <EEPROM.h> to save switch staus to EEPROM
#include <EEPROM.h>
// keys to turn switch on and off
#define keyOn '1'
#define keyOff '0'
//Create and Define Global Variables
int bits=8;
byte netID, nodeID;
int dipNet[] = {15, 16, 17}; //DIP Switch Pins for Net ID
int dipNode[] = {2, 3, 4, 5, 6, 7, 8, 9}; //DIP Switch Pins for Node ID
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// digital pin 13 connected with a 1K resistor and a LED
int led = 13;
// Address of EEPROM for saving switch status and variable to store value
int address = 5;
int value;
void setup()
{
Serial.begin(9600);
int i;
pinMode(A1, INPUT);
pinMode(A2, INPUT);
pinMode(A3, INPUT);
netID = netAddress();
Serial.print("Net ID: ");
Serial.println(netID);
for(i = 0; i<bits; i++){
pinMode(dipNode[i], INPUT); // sets the digital pin 2-9 as input
}
nodeID = nodeAddress(bits);
Serial.print("Node ID: ");
Serial.println(nodeID);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
//initialize the digital 13 pin as output
pinMode(led, OUTPUT);
// When the receiver is unstable and reboot, reading stored status from EEPROM
value = EEPROM.read(address);
if (value == '1')
{
digitalWrite(led, HIGH);
}
if (value == '0')
{
digitalWrite(led, LOW);
}
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
Serial.print(counter);
Serial.print(": ");
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
}
// if length of received message is less than transmitter sent meaning the receiver is unstable
if (messageLength < 3)
{
software_Reboot();
}
else
{
// netID and nodeID are numbers and message is charactor array, so convention is required
if ((message[0] == (netID + '0')) && (message[1] == (nodeID + '0')))
{
if (message[2] == keyOn)
{
digitalWrite(led, HIGH);
EEPROM.write(address, '1');
}
else
{
if (message[2] == keyOff)
{
digitalWrite(led, LOW);
EEPROM.write(address, '0');
}
}
}
}
Serial.println();
counter++;
}
}
// Software reboot function
void software_Reboot()
{
wdt_enable(WDTO_15MS);
while (1)
{
}
}
//Create Net Address from DIP Switch (3 positions used)
byte netAddress(){
int i,j=0;
//Get the switches state
j = (j << 1) | (! digitalRead(A1)); // read the input pin
j = (j << 1) | (! digitalRead(A2)); // read the input pin
j = (j << 1) | (! digitalRead(A3)); // read the input pin
return j; //return address
}
//Create Node Address from DIP Switch (8 positions used D2 - D9)
byte nodeAddress(int k){
int i,j=0;
//Get the switches state
for(i=0; i<k; i++){
j = (j << 1) | (! digitalRead(dipNode[i])); // read the input pin
}
return j; //return address
}
2014/08/12
3x4 Keypad Radio Frequency remote control
To send digits to radio frequency receiver, a 3x4 keypad and a transmitter is a good combination. To use the keypad, the connection between keypad and pins has to be clarified. For my keypad, the connections are:
Keypad.1: Pin1 + Pin5
Keypad.2: Pin1 + Pin6
Keypad.3: Pin1 + Pin7
Keypad.4: Pin2 + Pin5
Keypad.5: Pin2 + Pin6
Keypad.6: Pin2 + Pin7
Keypad.7: Pin3 + Pin5
Keypad.8: Pin3 + Pin6
Keypad.9: Pin3 + Pin7
Keypad.*: Pin4 + Pin5
Keypad.0: Pin4 + Pin6
Keypad.#: Pin4 + Pin7
I just want to send 3 digits range from 000 to 999 to receiver running the sketch posted on May. 11, 2014. The result is showed on the following photo.
Connections
1. Transmitter.Vcc -> Arduino.5V
2. Transmitter.Gnd -> Arduino.Gnd
3. Transmitter.Data -> Arduino.D12
4. Keypad.Pin1 (ROW0) -> Arduino.D5
5. Keypad.Pin2 (ROW1) -> Arduino.D4
6. Keypad.Pin3 (ROW2) -> Arduino.D3
7. Keypad.Pin4 (ROW3) -> Arduino.D2
8. Keypad.Pin5 (COL0) -> Arduino.D8
9. Keypad.Pin6 (COL1) -> Arduino.D7
10. Keypad.Pin7 (COL2) -> Arduino.D6
Photo
Updated Sketch
// Modified by Befun Hung on Oct. 28, 2014
// Blink led after sending message to notice user 5 times
#include <Keypad.h>
#include <VirtualWire.h>
#define maxLength 3
const byte ROWS = 4; // four rows
const byte COLS = 3; // three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = {5, 4, 3, 2};
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = {8, 7, 6}; // connect to the column pinouts of the keypad
char keyins[maxLength+1] = "";
int i=0, j=0, sendTimes=5;
int led=13;
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
Serial.begin(9600);
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
Serial.println("Ready!");
pinMode(led, OUTPUT);
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.print(key);
keyins[i] = key;
i++;
if (i == maxLength) {
for (j=0;j<sendTimes;j++) {
Serial.println();
send(keyins);
digitalWrite(led, HIGH);
delay(20);
digitalWrite(led, LOW);
delay(20);
}
i = 0;
}
}
}
void send(char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}
Sketch
#include <Keypad.h>
#include <VirtualWire.h>
#define maxLength 3
const byte ROWS = 4; // four rows
const byte COLS = 3; // three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = {5, 4, 3, 2};
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = {8, 7, 6}; // connect to the column pinouts of the keypad
char keyins[maxLength+1] = "";
int i=0;
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
Serial.begin(9600);
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
Serial.println("Ready!");
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.print(key);
keyins[i] = key;
i++;
if (i == maxLength) {
Serial.println();
send(keyins);
i = 0;
}
}
}
void send(char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}
Keypad.1: Pin1 + Pin5
Keypad.2: Pin1 + Pin6
Keypad.3: Pin1 + Pin7
Keypad.4: Pin2 + Pin5
Keypad.5: Pin2 + Pin6
Keypad.6: Pin2 + Pin7
Keypad.7: Pin3 + Pin5
Keypad.8: Pin3 + Pin6
Keypad.9: Pin3 + Pin7
Keypad.*: Pin4 + Pin5
Keypad.0: Pin4 + Pin6
Keypad.#: Pin4 + Pin7
I just want to send 3 digits range from 000 to 999 to receiver running the sketch posted on May. 11, 2014. The result is showed on the following photo.
Connections
1. Transmitter.Vcc -> Arduino.5V
2. Transmitter.Gnd -> Arduino.Gnd
3. Transmitter.Data -> Arduino.D12
4. Keypad.Pin1 (ROW0) -> Arduino.D5
5. Keypad.Pin2 (ROW1) -> Arduino.D4
6. Keypad.Pin3 (ROW2) -> Arduino.D3
7. Keypad.Pin4 (ROW3) -> Arduino.D2
8. Keypad.Pin5 (COL0) -> Arduino.D8
9. Keypad.Pin6 (COL1) -> Arduino.D7
10. Keypad.Pin7 (COL2) -> Arduino.D6
Photo
Updated Sketch
// Modified by Befun Hung on Oct. 28, 2014
// Blink led after sending message to notice user 5 times
#include <Keypad.h>
#include <VirtualWire.h>
#define maxLength 3
const byte ROWS = 4; // four rows
const byte COLS = 3; // three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = {5, 4, 3, 2};
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = {8, 7, 6}; // connect to the column pinouts of the keypad
char keyins[maxLength+1] = "";
int i=0, j=0, sendTimes=5;
int led=13;
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
Serial.begin(9600);
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
Serial.println("Ready!");
pinMode(led, OUTPUT);
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.print(key);
keyins[i] = key;
i++;
if (i == maxLength) {
for (j=0;j<sendTimes;j++) {
Serial.println();
send(keyins);
digitalWrite(led, HIGH);
delay(20);
digitalWrite(led, LOW);
delay(20);
}
i = 0;
}
}
}
void send(char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}
Sketch
#include <Keypad.h>
#include <VirtualWire.h>
#define maxLength 3
const byte ROWS = 4; // four rows
const byte COLS = 3; // three columns
char keys[ROWS][COLS] = {
{'1','2','3'},
{'4','5','6'},
{'7','8','9'},
{'*','0','#'}
};
// Connect keypad ROW0, ROW1, ROW2 and ROW3 to these Arduino pins.
byte rowPins[ROWS] = {5, 4, 3, 2};
// Connect keypad COL0, COL1 and COL2 to these Arduino pins.
byte colPins[COLS] = {8, 7, 6}; // connect to the column pinouts of the keypad
char keyins[maxLength+1] = "";
int i=0;
Keypad keypad = Keypad( makeKeymap(keys), rowPins, colPins, ROWS, COLS );
void setup() {
Serial.begin(9600);
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
Serial.println("Ready!");
}
void loop() {
char key = keypad.getKey();
if (key) {
Serial.print(key);
keyins[i] = key;
i++;
if (i == maxLength) {
Serial.println();
send(keyins);
i = 0;
}
}
}
void send(char *message)
{
vw_send((uint8_t *)message, strlen(message));
vw_wait_tx(); // Wait until the whole message is gone
}
2014/05/11
Arduino RF Wireless Message Display
As I am building the RF wireless power socket for home automation, I need a stand along tool to display any wireless received message. During the lab, I use Arduino serial monitor to monitor the message received once a second, error always happens at different time point as following screen shot shows. After disconnecting the Arduino Uno from PC to monitor message received by using LCD keypad shield as a stand along system, the error condition gone.
The RF wireless message display can be used to display the time on the NTP synchronized RTC clock (my projects during Aug 2013), so no additional time adjustment at display side is needed.
Parts Used
1. Arduino Uno R3
2. cheaphousetek LCD Keypad Shield
3. RF Receiver (described in Arduino Cookbook 14.1)
Connection
1. Stack LCD Key Keypad Upon Arduino Uno R3
2. RF Receiver Data Pin - Arduino Uno D11
3. RF Receiver Vcc - Arduino Uno 5V
4. RF Receiver Gnd - Arduino Uno Gnd
Photo
The sketch runs correctly with output to LCD shield for 247,610 times.
Sketch
/*
SimpleReceiveLCD
This sketch displays text strings received using VirtualWire
Connect the Receiver data pin to Arduino pin 11
*/
#include <VirtualWire.h>
// include the library code:
#include <LiquidCrystal.h>
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
void setup()
{
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("hello, world!");
lcd.clear();
Serial.begin(9600);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
lcd.clear();
Serial.print(counter);
Serial.print(": ");
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 0);
lcd.print(counter);
lcd.print(":");
lcd.setCursor(0,1);
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
lcd.print(char(message[i]));
}
Serial.println();
counter++;
}
}
The RF wireless message display can be used to display the time on the NTP synchronized RTC clock (my projects during Aug 2013), so no additional time adjustment at display side is needed.
Parts Used
1. Arduino Uno R3
2. cheaphousetek LCD Keypad Shield
3. RF Receiver (described in Arduino Cookbook 14.1)
Connection
1. Stack LCD Key Keypad Upon Arduino Uno R3
2. RF Receiver Data Pin - Arduino Uno D11
3. RF Receiver Vcc - Arduino Uno 5V
4. RF Receiver Gnd - Arduino Uno Gnd
Photo
The sketch runs correctly with output to LCD shield for 247,610 times.
Sketch
/*
SimpleReceiveLCD
This sketch displays text strings received using VirtualWire
Connect the Receiver data pin to Arduino pin 11
*/
#include <VirtualWire.h>
// include the library code:
#include <LiquidCrystal.h>
byte message[VW_MAX_MESSAGE_LEN]; // a buffer to store the incoming messages
byte messageLength = VW_MAX_MESSAGE_LEN; // the size of the message
unsigned long counter = 1;
// initialize the library with the numbers of the interface pins
LiquidCrystal lcd(8, 9, 4, 5, 6, 7);
void setup()
{
// set up the LCD's number of columns and rows:
lcd.begin(16, 2);
// Print a message to the LCD.
lcd.print("hello, world!");
lcd.clear();
Serial.begin(9600);
Serial.println("Device is ready");
// Initialize the IO and ISR
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver
}
void loop()
{
if (vw_get_message(message, &messageLength)) // Non-blocking
{
lcd.clear();
Serial.print(counter);
Serial.print(": ");
// set the cursor to column 0, line 1
// (note: line 1 is the second row, since counting begins with 0):
lcd.setCursor(0, 0);
lcd.print(counter);
lcd.print(":");
lcd.setCursor(0,1);
for (int i = 0; i < messageLength; i++)
{
Serial.write(message[i]);
lcd.print(char(message[i]));
}
Serial.println();
counter++;
}
}
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