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Relay Shield for Arduino
Shield to control 6 relay, 6 digital input and 6 analog input with Arduino Duemilanove, Arduino UNO or Seeeduino. The digital inputs and relay outputs are equipped with an LED that indicates the status. The lines of I/O are connected to the Arduino through corresponding pin-strip pitch 2.54 mm. It gets its power directly from the Arduino module, which provides the 5 volt regulator derived from their contacts between the 5V and GND. The mini-relay Shield of work at 12 volts, so that the relays are working properly will have to connect the Arduino module with an external power supply can provide this voltage. The card can be used in many applications and in many ways. Find in this page a little sketch as to manage I/O via serial commands.
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//Relay Shield //by Boris Landoni //www.open-electronics.org //www.futurashop.it // Variables will change: int in=0; int out=0; int an=0; int inByte=0; // the follow variables is a long because the time, measured in miliseconds, // will quickly become a bigger number than can be stored in an int. long interval = 1000; // interval at which to blink (milliseconds) void setup() { // start serial port at 9600 bps: Serial.begin(9600); // set the digital pin as output: for (int out=8; out<=13; out++){ pinMode(out, OUTPUT); } } void loop() { // here is where you'd put code that needs to be running all the time. // check to see if it's time to blink the LED; that is, if the // difference between the current time and last time you blinked // the LED is bigger than the interval at which you want to // blink the LED. if (Serial.available() > 0) { protocollo(); } } void protocollo() { inByte = Serial.read(); switch (inByte) { case 79: //O out Serial.println("Out number? (1 to 6)"); // send an initial string while (Serial.available() <= 0) { delay(300); } out = Serial.read()-48; Serial.println("ricevuto "); Serial.print(out); if (out>=1&&out<=6) { out=out+7; if (!digitalRead(out)) digitalWrite(out, HIGH); else digitalWrite(out, LOW); Serial.print("Out "); Serial.print(out-7); Serial.print(" = "); Serial.println(digitalRead(out)); } break; case 73: //I //input Serial.println("In number? (1 to 6)"); // send an initial string while (Serial.available() <= 0) { delay(300); } in = Serial.read()-48; if (in>=1&&in<=6){ in=in+1; Serial.print("In "); Serial.print(in-1); Serial.print(" = "); Serial.println(digitalRead(in)); } break; case 65: //A //analog Serial.println("Analog number? (1 to 6)"); // send an initial string while (Serial.available() <= 0) { delay(300); } an = Serial.read()-48; if (an>=1&&an<=6){ an=an-1; Serial.print("Analog "); Serial.print(an+1); Serial.print(" = "); Serial.println(analogRead(an)); } break; //default: // if nothing else matches, do the default // default is optional } } |
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