Tilt meter with Electric Imp impExplorer to control LIFX lights

agent.nut

current_bright <- 0.5;
current_scene <- 2;
const low_scene = 0;
const high_scene = 3;
const lowest_bright = 0.0;
const highest_bright = 1.0;
const bearer = "YOURBEARERIDS";
related_scenes <- [IFNEEDED+YOURSCENEIDSHERE];
function motion(data) {
    if(data.dir == "TAP") {
        server.log(data.count);
       //do something cool here (I did a custom animation)
    }
    if(data.dir == "FORWARD") {
        local request = http.put("https://api.lifx.com/v1/lights/group_id:YOURGROUPID/state",
                   {
                    "Authorization":"Bearer "+bearer,
                    "content-type": "application/json"
                   },http.jsonencode({"power": "on"})
                  ); 
        local response = request.sendsync();
    }
    
    if(data.dir == "BACK") {
        local request = http.put("https://api.lifx.com/v1/lights/group_id:YOURGROUPID/state",
                   {
                    "Authorization":"Bearer "+bearer,
                    "content-type": "application/json"
                   },http.jsonencode({"power": "off"})
                  ); 
        local response = request.sendsync();
    }
    
    if(data.dir == "LEFT") {
        current_bright -= 0.1;
        if(current_bright < lowest_bright) { current_bright = lowest_bright; }
        local request = http.put("https://api.lifx.com/v1/lights/group_id:YOURGROUPID/state",
                   {
                    "Authorization":"Bearer "+bearer,
                    "content-type": "application/json"
                   },http.jsonencode({"brightness": current_bright})
                  ); 
        local response = request.sendsync();
    }
    
    if(data.dir == "RIGHT") {
        current_bright += 0.1;
        if(current_bright > highest_bright) { current_bright = highest_bright; }
        local request = http.put("https://api.lifx.com/v1/lights/group_id:YOURGROUPID/state",
                   {
                    "Authorization":"Bearer "+bearer,
                    "content-type": "application/json"
                   },http.jsonencode({"brightness": current_bright})
                  ); 
        local response = request.sendsync(); 
    }
}


device.on("direction.sent", motion);

device.nut

// Accelerometer Library
#require "LIS3DH.class.nut:1.3.0"
#require "WS2812.class.nut:2.0.2"

// Define constants
const sleepTime = 10;
const LIS3DH_ADDR = 0x32;

// Accel settings
const ACCEL_DATARATE = 100;

const ACCEL_THRESHOLD = 0.1;
const ACCEL_DURATION = 1;

const LOW_THRESH = -0.85;
const HIGH_THRESH = 0.85;


//tap_count 
tap_count <- 0;

// Declare Global Variables
accel <- null;
led <- null

// Define functions
function takeReading(){
    accel.getAccel(function(reading) {
        if( reading.z > 1.25) {
            agent.send("direction.sent", {"dir": "TAP", "count": tap_count}); 
            flashLed([25,25,25]); 
            tap_count++;
        }
        
        else if( reading.y < LOW_THRESH) {
            agent.send("direction.sent",  {"dir": "RIGHT", "count": tap_count}); 
            flashLed([0,128,128]);  
            tap_count = 0;
        }
        
        else if( reading.x < LOW_THRESH) {
            agent.send("direction.sent",  {"dir": "BACK", "count": tap_count}); 
            flashLed([128,0,0]); 
            tap_count = 0;
        }
        
        else if( reading.y > HIGH_THRESH) {
            agent.send("direction.sent",  {"dir": "LEFT", "count": tap_count}); 
            flashLed([128,128,0]); 
            tap_count = 0;
        }
        
        else if( reading.x > HIGH_THRESH) {
            agent.send("direction.sent",  {"dir": "FORWARD", "count": tap_count}); 
            flashLed([0,128,0]); 
            tap_count = 0;
        }
        
        takeReading();
    });
}

function flashLed(color) {
    led.set(0, color).draw();
    imp.sleep(0.5);
    led.set(0, [0,0,0]).draw();
}

// Start of program

// Configure I2C bus for sensors
local i2c = hardware.i2c89;
i2c.configure(CLOCK_SPEED_400_KHZ);

accel = LIS3DH(i2c, LIS3DH_ADDR);
accel.init();
// set up to take readings
accel.setLowPower(true);
accel.setDataRate(ACCEL_DATARATE);
accel.enable(true);

// Configure SPI bus and powergate pin for RGB LED
local spi = hardware.spi257;
spi.configure(MSB_FIRST, 7500);
hardware.pin1.configure(DIGITAL_OUT, 1);
led <- WS2812(spi, 1);

// Take a reading
takeReading();