https://github.com/banjerr/thelovemachine
Arduino project that tells you how hot you are...
https://github.com/banjerr/thelovemachine
Last synced: 24 days ago
JSON representation
Arduino project that tells you how hot you are...
- Host: GitHub
- URL: https://github.com/banjerr/thelovemachine
- Owner: Banjerr
- Created: 2017-01-08T16:15:12.000Z (over 9 years ago)
- Default Branch: master
- Last Pushed: 2017-01-08T20:31:49.000Z (over 9 years ago)
- Last Synced: 2025-03-04T09:32:06.183Z (over 1 year ago)
- Language: JavaScript
- Homepage:
- Size: 67.2 MB
- Stars: 0
- Watchers: 1
- Forks: 0
- Open Issues: 0
-
Metadata Files:
- Readme: readme.md
Awesome Lists containing this project
README
# theLoveMachine
This is another simple project from the Arduino starter kit. Coded first with native C/C++ and then converting that over to JavaScript utilizing the Johnny-Five lib. The temperature sensor outputs the voltage/temperature back to the terminal via a simple `console.log`. The lights come on depending on how warm the sensor gets.
## original Arduino (C/C++) code
```c
/**
* THE LOVE MACHINE
* written by Ben Redden
*/
const int sensorPin = A0;
const float baselineTemp = 23.4;
void setup() {
Serial.begin(9600); // open a serial port at 9600 bits per second
// loop through all the pins with LEDs attached
for (int pinNumber = 2; pinNumber < 5; pinNumber++) {
pinMode(pinNumber, OUTPUT); // this is an output pin
digitalWrite(pinNumber, LOW); // this is now off
}
}
void loop() {
int sensorVal = analogRead(sensorPin); // get the voltage on the pin and save to a val
// send data back to the serial monitor in the IDE
Serial.print("Sensor Value: ");
Serial.print(sensorVal);
// Analog to Digital Conversion (ADC) to voltage
// sensor reports back int in range 0 - 1024, Arduino is 5v
float voltage = (sensorVal/1024.0) * 5.0;
Serial.print(", Volts: ");
Serial.print(voltage);
// convert the voltage to temp in degrees
Serial.print(", degrees C: ");
float temperature = (voltage - .5) * 100;
Serial.println(temperature);
// light it up
if (temperature < baselineTemp) {
digitalWrite(2, LOW);
digitalWrite(3, LOW);
digitalWrite(4, LOW); // these are all off
}
else if (temperature >= baselineTemp+2 && temperature < baselineTemp+4) {
digitalWrite(2, HIGH); // this is now on
digitalWrite(3, LOW); // still off
digitalWrite(4, LOW);
}
else if (temperature >= baselineTemp+4 && temperature < baselineTemp+6) {
digitalWrite(2, HIGH);
digitalWrite(3, HIGH); // this is now on
digitalWrite(4, LOW); // still off
}
else if (temperature >= baselineTemp+6) {
digitalWrite(2, HIGH);
digitalWrite(3, HIGH);
digitalWrite(4, HIGH); // this is now on
}
delay(1); // ADC can only read so fast, delay at end of loop
}
```
## Johnny-Five JavaScript (with some Underscore.js too)
```javascript
'use strict'
/**
* THE LOVE MACHINE
* written by Ben Redden
*/
const sensorPin = 'A0',
baselineTemp = 20,
five = require('johnny-five'),
board = new five.Board(),
outputPins = [2, 3, 4],
_ = require('underscore');
let ledObject = {},
sensorVal = 0;
board.on('ready', function() {
// set up the sensor on analog pin 0 (sensorPin)
const tempSensor = new five.Sensor(sensorPin);
// set up LEDs on pins 2-4
_.each(outputPins, function(outputPin) {
board.pinMode(outputPin, five.Pin.OUTPUT); // pin is an output
board.digitalWrite(outputPin, 0); // they are off
});
setTimeout(function(){ // delay to give sensor time to catch up
// get data from the tempSensor
tempSensor.on('change', function() {
sensorVal = this.value;
// alert the console
console.log('Sensor Value: ' + sensorVal);
// Analog to Digital Conversion (ADC) to voltage
// sensor reports back int in range 0 - 1024, Arduino is 5v
let voltage = (sensorVal/1024.0) * 5.0;
// more alerts
console.log(', Volts: ' + voltage);
// convert voltage to temp in degrees C
let temperature = (voltage - .5) * 100;
// alert again
console.log(', Temperature degrees C: ' + temperature);
// light it up
if (temperature < baselineTemp) {
board.digitalWrite(2, 0);
board.digitalWrite(3, 0);
board.digitalWrite(4, 0); // these are all off
}
else if (temperature >= baselineTemp + 2 && temperature < baselineTemp + 4) {
board.digitalWrite(2, 1); // this is now on
board.digitalWrite(3, 0); // still off
board.digitalWrite(4, 0);
}
else if (temperature >= baselineTemp + 4 && temperature < baselineTemp + 6) {
board.digitalWrite(2, 1);
board.digitalWrite(3, 1); // this is now on
board.digitalWrite(4, 0); // still off
}
else if (temperature >= baselineTemp + 6) {
board.digitalWrite(2, 1);
board.digitalWrite(3, 1);
board.digitalWrite(4, 1); // this is now on
}
});
}, 5000);
});
```