Spacebot - Revision history

Fish: Added Arduino code

2012-01-30T21:34:00Z

Added Arduino code

Fish: Category added

2012-01-27T12:26:21Z

Category added

Fish at 12:25, 27 January 2012

2012-01-27T12:25:27Z

Fish: Picture adjustment

2012-01-27T12:22:23Z

Picture adjustment

Fish at 12:20, 27 January 2012

2012-01-27T12:20:54Z

Fish: Documentation of the space automation

2012-01-27T12:20:42Z

Documentation of the space automation

New page

The Spacebot is used to control space related automation tasks.
[[File:cactispacesample.jpg]]

=Goals=
Our goals for now
*Temperature monitor and (remote)control
*Space status (open, close) automation and interfacing to [https://twitter.com/#!/randomdataspace Twitter]

=Accomplished=
*Monitoring of light and temperature:
**[http://www.smurfer.net/cacti/graph_image.php?local_graph_id=58 graphs]
**[[Contact#Chatroom_.2F_IRC|IRC]] #randomdata !status
**Status.html also used for hackerspaces.nl and blogpage: [http://www.randomdata.nl/status.html status.html]
**Environment page: [http://www.randomdata.nl/spacestatus.html]
*Space status tweeter to [https://twitter.com/#!/randomdataspace @randomdataspace]

=How=
*Arduino: [http://arduino.cc/]
*Sensor shield: [http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=7&products_id=20]
*DS18B20 Temperature sensor: [http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=7&products_id=27]
*LDR (Light Dependant Resistor): [http://www.nuelectronics.com/estore/index.php?main_page=product_info&cPath=7&products_id=22]

The Arduino with the sensorshield and sensors is connected thru USB to a [[NSLU2]] (this could also be a regular pc). A cron job reads every minute the serial port of the [Arduino]. It will display the value's of the light sensor and the temperature sensor. Thru a http call to our server the cron job will post these value's to the Randomdata webserver.
The webserver will store the value's and add them to cacti, make some calculations if the light of the space is already on (or off) for 5 minutes and take some actions like twitter and adjust some html pages.

=To fix, adjust etc=
*Publish documented code of the Arduino
*Publish the scripts of the cron job
*Publish the scripts of the webserver
*Publish the IRC scripts
*create a more permanent casing for the Arduino
*add an electronic valve to the heating system
*activate the central heating valve
*add functionality to the system to put the temperature up and down (IRC "!temp up" & "!temp down" & "!temp up 17:00-23:00"

← Older revision		Revision as of 21:34, 30 January 2012
Line 35:		Line 35:
	[[Category:Projects]]		[[Category:Projects]]
	[[Category:Arduino]]		[[Category:Arduino]]
		+
		+	=code=
		+	==Arduino==
		+	<pre>
		+
		+	#define TEMP_PIN 18
		+	#define LDR_PIN 3
		+
		+	void OneWireReset(int Pin);
		+	void OneWireOutByte(int Pin, byte d);
		+	byte OneWireInByte(int Pin);
		+	int lightcounter;
		+
		+	void setup()
		+	{
		+	digitalWrite(TEMP_PIN, LOW);
		+	pinMode(TEMP_PIN, INPUT); // sets the digital pin as input (logic 1)
		+	Serial.begin(9600);
		+	delay(100);
		+	}
		+
		+	void loop()
		+	{
		+	int HighByte, LowByte, TReading, SignBit, Tc_100, Whole, Fract;
		+
		+	OneWireReset(TEMP_PIN);
		+	OneWireOutByte(TEMP_PIN, 0xcc);
		+	OneWireOutByte(TEMP_PIN, 0x44); // perform temperature conversion, strong pullup for one sec
		+
		+	OneWireReset(TEMP_PIN);
		+	OneWireOutByte(TEMP_PIN, 0xcc);
		+	OneWireOutByte(TEMP_PIN, 0xbe);
		+
		+	LowByte = OneWireInByte(TEMP_PIN);
		+	HighByte = OneWireInByte(TEMP_PIN);
		+	TReading = (HighByte << 8) + LowByte;
		+	SignBit = TReading & 0x8000; // test most sig bit
		+	if (SignBit) // negative
		+	{
		+	TReading = (TReading ^ 0xffff) + 1; // 2's comp
		+	}
		+	Tc_100 = (6 * TReading) + TReading / 4; // multiply by (100 * 0.0625) or 6.25
		+
		+	Whole = Tc_100 / 100; // separate off the whole and fractional portions
		+	Fract = Tc_100 % 100;
		+
		+
		+	if (SignBit) // If its negative
		+	{
		+	Serial.print("-");
		+	}
		+	Serial.print("temp=");
		+	Serial.print(Whole);
		+	Serial.print(".");
		+	if (Fract < 10)
		+	{
		+	Serial.print("0");
		+	}
		+	Serial.print(Fract);
		+
		+	int light;
		+	light = analogRead(LDR_PIN);
		+	Serial.print("&light=");
		+	Serial.print(light);
		+
		+	//counter for twitter
		+	if (light >= 300)
		+	{
		+	lightcounter = lightcounter + 1;
		+	if (lightcounter > 120) lightcounter = 120;
		+	}
		+	else
		+	{
		+	lightcounter = lightcounter - 1;
		+	if (lightcounter <= 1) lightcounter = 0;
		+	}
		+
		+	Serial.print("&lc=");
		+	Serial.print(lightcounter);
		+	Serial.print("\n");
		+
		+	delay(5000); // 5 second delay. Adjust as necessary
		+	}
		+
		+	void OneWireReset(int Pin) // reset. Should improve to act as a presence pulse
		+	{
		+	digitalWrite(Pin, LOW);
		+	pinMode(Pin, OUTPUT); // bring low for 500 us
		+	delayMicroseconds(500);
		+	pinMode(Pin, INPUT);
		+	delayMicroseconds(500);
		+	}
		+
		+	void OneWireOutByte(int Pin, byte d) // output byte d (least sig bit first).
		+	{
		+	byte n;
		+
		+	for(n=8; n!=0; n--)
		+	{
		+	if ((d & 0x01) == 1) // test least sig bit
		+	{
		+	digitalWrite(Pin, LOW);
		+	pinMode(Pin, OUTPUT);
		+	delayMicroseconds(5);
		+	pinMode(Pin, INPUT);
		+	delayMicroseconds(60);
		+	}
		+	else
		+	{
		+	digitalWrite(Pin, LOW);
		+	pinMode(Pin, OUTPUT);
		+	delayMicroseconds(60);
		+	pinMode(Pin, INPUT);
		+	}
		+
		+	d=d>>1; // now the next bit is in the least sig bit position.
		+	}
		+
		+	}
		+
		+	byte OneWireInByte(int Pin) // read byte, least sig byte first
		+	{
		+	byte d, n, b;
		+
		+	for (n=0; n<8; n++)
		+	{
		+	digitalWrite(Pin, LOW);
		+	pinMode(Pin, OUTPUT);
		+	delayMicroseconds(5);
		+	pinMode(Pin, INPUT);
		+	delayMicroseconds(5);
		+	b = digitalRead(Pin);
		+	delayMicroseconds(50);
		+	d = (d >> 1) \| (b<<7); // shift d to right and insert b in most sig bit position
		+	}
		+	return(d);
		+	}
		+	</pre>

← Older revision		Revision as of 12:26, 27 January 2012
Line 33:		Line 33:
	*activate the central heating valve		*activate the central heating valve
	*add functionality to the system to put the temperature up and down (IRC "!temp up" & "!temp down" & "!temp up 17:00-23:00"		*add functionality to the system to put the temperature up and down (IRC "!temp up" & "!temp down" & "!temp up 17:00-23:00"
		+	[[Category:Projects]]
		+	[[Category:Arduino]]

@@ Line 1: / Line 1: @@
 The Spacebot is used to control space related automation tasks.<br>
-[[File:cactispacesample.png]]
+__TOC__[[File:cactispacesample.png|300px]]
 =Goals=

@@ Line 1: / Line 1: @@
 The Spacebot is used to control space related automation tasks.<br>
-[[File:cactispacesample.jpg]]
+[[File:cactispacesample.png]]
 =Goals=

← Older revision		Revision as of 12:20, 27 January 2012
Line 1:		Line 1:
−	The Spacebot is used to control space related automation tasks.	+	The Spacebot is used to control space related automation tasks.<br>
	[[File:cactispacesample.jpg]]		[[File:cactispacesample.jpg]]