Difference between revisions of "433Mhz RF link kit"
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(Created page with " == Introduction == The kit is consisted of transmitter and receiver, popular used for remote control. == Specification == *Frequency: 433Mhz. *Modulation: ASK *Receiv...") |
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== Introduction == | == Introduction == | ||
| − | |||
| + | The kit is consisted of transmitter and receiver, popular used for remote control. | ||
| + | |||
| + | [[File:Rf1.jpg|600px]] | ||
== Specification == | == Specification == | ||
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== Wiring diagram == | == Wiring diagram == | ||
| + | [[File:Wiring111.jpg]] | ||
| − | + | ==examlple code== | |
| − | = examlple code = | ||
Transmmiter: | Transmmiter: | ||
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Serial.begin(9600); // Debugging only | Serial.begin(9600); // Debugging only | ||
Serial.println("setup"); | Serial.println("setup"); | ||
| − | |||
// Initialise the IO and ISR | // Initialise the IO and ISR | ||
vw_set_ptt_inverted(true); // Required for DR3100 | vw_set_ptt_inverted(true); // Required for DR3100 | ||
| Line 35: | Line 36: | ||
{ | { | ||
const char *msg = "hello"; | const char *msg = "hello"; | ||
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digitalWrite(13, true); // Flash a light to show transmitting | digitalWrite(13, true); // Flash a light to show transmitting | ||
vw_send((uint8_t *)msg, strlen(msg)); | vw_send((uint8_t *)msg, strlen(msg)); | ||
| Line 55: | Line 55: | ||
Serial.begin(9600); // Debugging only | Serial.begin(9600); // Debugging only | ||
Serial.println("setup"); | Serial.println("setup"); | ||
| − | |||
// Initialise the IO and ISR | // Initialise the IO and ISR | ||
vw_set_ptt_inverted(true); // Required for DR3100 | vw_set_ptt_inverted(true); // Required for DR3100 | ||
vw_setup(2000); // Bits per sec | vw_setup(2000); // Bits per sec | ||
| − | |||
vw_rx_start(); // Start the receiver PLL running | vw_rx_start(); // Start the receiver PLL running | ||
} | } | ||
| − | |||
void loop() | void loop() | ||
{ | { | ||
uint8_t buf[VW_MAX_MESSAGE_LEN]; | uint8_t buf[VW_MAX_MESSAGE_LEN]; | ||
uint8_t buflen = VW_MAX_MESSAGE_LEN; | uint8_t buflen = VW_MAX_MESSAGE_LEN; | ||
| + | if (vw_get_message(buf, &buflen))//Non-blocking | ||
| + | { | ||
| + | int i; | ||
| + | digitalWrite(12, true); //Flash a light to show received good message | ||
| + | Serial.print("Got: "); //Message with a good checksum received, dump it. | ||
| + | for (i = 0; i < buflen; i++) | ||
| + | { | ||
| + | Serial.print(buf[i], HEX); | ||
| + | Serial.print(" "); | ||
| + | } | ||
| + | Serial.println(""); | ||
| + | digitalWrite(12, false); | ||
| + | } | ||
| + | } | ||
| − | + | ==How to buy== | |
| − | + | Click here to buy [http://www.geeetech.com/433mhz-rf-link-kit-p-160.html 433Mhz RF link kit] | |
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Latest revision as of 03:19, 29 May 2012
Introduction
The kit is consisted of transmitter and receiver, popular used for remote control.
Specification
- Frequency: 433Mhz.
- Modulation: ASK
- Receiver Data Output: High - 1/2 Vcc, Low - 0.7v
- Transmitter Input Voltage: 3-12V (high voltage = more transmitting power)
Wiring diagram
examlple code
Transmmiter:
#include <VirtualWire.h>
#undef int
#undef abs
#undef double
#undef float
#undef round
void setup()
{
Serial.begin(9600); // Debugging only
Serial.println("setup");
// Initialise the IO and ISR
vw_set_ptt_inverted(true); // Required for DR3100
vw_setup(2000); // Bits per sec
}
void loop()
{
const char *msg = "hello";
digitalWrite(13, true); // Flash a light to show transmitting
vw_send((uint8_t *)msg, strlen(msg));
vw_wait_tx(); // Wait until the whole message is gone
digitalWrite(13, false);
delay(200);
}
Receiver:
#include <VirtualWire.h>
#undef int
#undef abs
#undef double
#undef float
#undef round
void setup()
{
Serial.begin(9600); // Debugging only
Serial.println("setup");
// Initialise the IO and ISR
vw_set_ptt_inverted(true); // Required for DR3100
vw_setup(2000); // Bits per sec
vw_rx_start(); // Start the receiver PLL running
}
void loop()
{
uint8_t buf[VW_MAX_MESSAGE_LEN];
uint8_t buflen = VW_MAX_MESSAGE_LEN;
if (vw_get_message(buf, &buflen))//Non-blocking
{
int i;
digitalWrite(12, true); //Flash a light to show received good message
Serial.print("Got: "); //Message with a good checksum received, dump it.
for (i = 0; i < buflen; i++)
{
Serial.print(buf[i], HEX);
Serial.print(" ");
}
Serial.println("");
digitalWrite(12, false);
}
}
How to buy
Click here to buy 433Mhz RF link kit
