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Lola Feeder Script
const RaspiCam = require('raspicam');
const axios = require('axios');
const schedule = require('node-schedule');
const fs = require('fs');
const moment = require('moment');
const rfDevice = require('./RF_Thing');
const tweeter = require('./tweets');
// Set times to turn lamp on and off
const LAMP_ON_CRONTAB = "0 5,20 * * *";
const LAMP_OFF_CRONTAB = "0 8,23 * * *";
// Use 'node-schedule' library to turn lamp ON at specified times.
let lampOn = schedule.scheduleJob(LAMP_ON_CRONTAB, function() {
rfDevice.rfCommand(rfDevice.LAMP, 'on');
});
// Use 'node-schedule' library to turn lamp OFF at specified times.
let lampOff = schedule.scheduleJob(LAMP_OFF_CRONTAB, function() {
rfDevice.rfCommand(rfDevice.LAMP, 'off');
});
// Instantiate a Raspberry Pi camera lib instance
const cam = RaspiCam({
mode: 'photo',
output: 'rpicam.jpg',
width: 600,
height: 600,
quality: 80,
timeout: 2000
});
// Log when a photo is taken
cam.on('start', function(err, ts) {
console.log('Photo snapped at ' + ts);
});
// When a photo capture is complete...
cam.on('stop', function(err, ts) {
if (err) {
console.log(err);
return;
}
// Send a GET request to the Lola_Detector.py service
axios.get('http://127.0.0.1:5000/lola')
.then(function(response){
let data = response.data;
// Check the lola probability in the result.
if ( response.data.lola > 0.993 ) {
console.log('Lola FOUND!! Activating Feeder.')
// Turn ON the Feeder
rfDevice.rfCommand(rfDevice.FEEDER, 'on');
// Send a request to IFTTT Maker rule that sends me a push notification
axios.get('https://maker.ifttt.com/trigger/lola_feeder_triggered/with/key/<mysecrectkey>');
let now = moment().format('YYYY-MM-DD_HHmm');
// Copy the image to a separate folder for archival purposes.
fs.createReadStream('rpicam.jpg').pipe(fs.createWriteStream(`./snaps/${now}.jpg`));
// Wait 60 seconds to do more stuff.
setTimeout(function() {
// Tweet the picture
tweeter('./rpicam.jpg');
console.log('Turning off Feeder.')
// Turn off the Feeder
rfDevice.rfCommand(rfDevice.FEEDER, 'off');
// Set the wait time to 1.5 hours.
let hours = 1000 * 60 * 60 * 1.5;
// Prepare the whole thing to start over in 1.5 hours.
camRestart(hours);
}, 60000);
} else {
console.log(' No Lola ');
// If no lola, wait a couple seconds and try again.
camRestart(2000);
// TODO: instead of constantly snapping photos every 2 seconds, use a PIR motion sensor to kick of a photo snapping session.
}
})
.catch(function(err){
console.log(err.message);
});
});
// Stop the camera
cam.on('exit', function(ts) {
cam.stop();
});
// This function kicks off the photo snap & analyze cycle after <timeout> ms
function camRestart(timeout) {
console.log('camRestart. Timeout: ' + timeout/1000 + ' seconds.');
setTimeout( function() {
cam.start();
}, timeout)
}
// Start the app when the script loads for the first time.
camRestart(1000);
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