Switch Light by Servo

Use servo to switch the light, it can controlled through HTTP command and also arranged by scheduling.

Step by Step Introduction

Built a electric imp agent code for receiving commands form internet.

The device side is scheduling the on/off automatically, and off work at weekend.

Here is the Device Code: (The position of servo is depend on how to setup the switch)

// These constants may be different for your servo
 
const SERVO_MIN = 0.03
const SERVO_MAX = 0.1
 
// Create global variable for the pin to which the servo is connected
// then configure the pin for PWM
 
servo 

Agent Code is here:

// Log the URLs we need

server.log("Turn Switch On: " + http.agenturl() + "?servo=1");

server.log("Turn Switch Off: " + http.agenturl() + "?servo=0");

 

function requestHandler(request, response) {

  try {

    // check if the user sent led as a query parameter

    if ("servo" in request.query) {

      

      // if they did, and servo=1.. set our variable to 1

      if (request.query.servo == "1" || request.query.servo == "0") {

        // convert the led query parameter to an integer

        local servoonoff = request.query.servo.tointeger();

 

        // send "led" message to device, and send ledState as the data

        device.send("servo", servoonoff); 

      }

    }

    // send a response back saying everything was OK.

    response.send(200, "OK");

  } catch (ex) {

    response.send(500, "Internal Server Error: " + ex);

  }

}

// register the HTTP handler

http.onrequest(requestHandler);