GMU:Sensor Hacklab/Christian Doeller - Revision history

Veja6203 at 08:33, 1 August 2016

2016-08-01T08:33:24Z

← Older revision		Revision as of 08:33, 1 August 2016
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	~~__________________________________________________________~~		== Finishing the Prototype ==


			<br>
	~~Finishing the prototype:~~<br>~~<br>~~

	The plan was to implement more switches into the carpet-matrix in order to allow playing with more output possibilities.<br><br>		The plan was to implement more switches into the carpet-matrix in order to allow playing with more output possibilities.<br><br>

Veja6203 at 08:31, 1 August 2016

2016-08-01T08:31:33Z

← Older revision		Revision as of 08:31, 1 August 2016
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	[[File:Alu_Resistor_Ladder2.jpg]]<br><br>		[[File:Alu_Resistor_Ladder2.jpg]]<br><br>

	As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>		As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate <br>wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>
	Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“ and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>		Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“ and the other 8 <br>are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>

Veja6203 at 08:30, 1 August 2016

2016-08-01T08:30:13Z

← Older revision		Revision as of 08:30, 1 August 2016
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	[[File:Alu_Karton2.jpg]]<br><br>		[[File:Alu_Karton2.jpg]]<br><br>

	I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize ~~<br>~~ the amount of pins being used.<br><br>		I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize the amount of pins being used.<br><br>

	[[File:Schematic_Raster_Styro.jpg]]<br><br>		[[File:Schematic_Raster_Styro.jpg]]<br><br>
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	[[File:Alu_Resistor_Ladder2.jpg]]<br><br>		[[File:Alu_Resistor_Ladder2.jpg]]<br><br>

	As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design ~~<br>~~by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>		As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>
	Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“~~<br>~~ and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>		Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“ and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>

Veja6203 at 08:29, 1 August 2016

2016-08-01T08:29:14Z

Veja6203 at 08:19, 1 August 2016

2016-08-01T08:19:15Z

← Older revision		Revision as of 08:19, 1 August 2016
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	I kept all the cut out pieces in order to change the design as I need it by putting them back in place.<br><br>		I kept all the cut out pieces in order to change the design as I need it by putting them back in place.<br><br>

	~~„Raster_Styro~~.~~jpg“~~		[[File:Raster_Styro.jpg]]<br><br>


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	The bottom part features eight and the upper part features six „circuit lanes“ that are located in a way so that they form a kind of matrix-grid when they are put on top of each other. <br>		The bottom part features eight and the upper part features six „circuit lanes“ that are located in a way so that they form a kind of matrix-grid when they are put on top of each other. <br>

	Raster_Karton.jpg <br><br>		[[File:Raster_Karton.jpg]] <br><br>
	Zeichnung_Karton.jpg		[[File:Zeichnung_Karton.jpg]]<br><br>
	Zeichnung_Karton2.jpg		[[File:Zeichnung_Karton2.jpg]]<br><br>
	Zeichnung_Karton3.jpg		[[File:Zeichnung_Karton3.jpg]]<br><br>
	Alu_Karton.jpg		[[File:Alu_Karton.jpg]]<br><br>
	Raster_Alu_Karton.jpg		[[File:Raster_Alu_Karton.jpg]]<br><br>
	Alu_Karton2.jpg		[[File:Alu_Karton2.jpg]]<br><br>

	I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize the amount of pins being used.<br><br>		I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize the amount of pins being used.<br><br>

	Schematic_Raster_Styro.jpg		[[File:Schematic_Raster_Styro.jpg]]<br><br>
	Alu_Resistor_Ladder.jpg		[[File:Alu_Resistor_Ladder.jpg]]<br><br>
	Alu_Resistor_Ladder2.jpg		[[File:Alu_Resistor_Ladder2.jpg]]<br><br>

	As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>		As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>
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	Arduino_Raster_Karton.jpg		[[File:Arduino_Raster_Karton.jpg]]<br><br>


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	http://playground.arduino.cc/Code/Keypad		[http://playground.arduino.cc/Code/Keypad] <br>
	http://www.dummies.com/how-to/content/how-to-specify-userdefined-functions-for-your-keyp.html		[http://www.dummies.com/how-to/content/how-to-specify-userdefined-functions-for-your-keyp.html]<br><br>


	Arduino_Raster_Matrix_Carpet.png		[[File:Arduino_Raster_Matrix_Carpet.png]]<br><br>

Veja6203 at 08:16, 1 August 2016

2016-08-01T08:16:55Z

← Older revision		Revision as of 08:16, 1 August 2016
Line 190:		Line 190:

	[https://vimeo.com/170147174 ===> VIDEO]		[https://vimeo.com/170147174 ===> VIDEO]

			__________________________________________________________

			Finishing the prototype:<br><br>

			The plan was to implement more switches into the carpet-matrix in order to allow playing with more output possibilities.<br><br>

			I achieved that by changing the design:<br><br>

			1) Layout<br>
			2) Switch Design<br>
			3) Programming<br><br>

			1) <br>
			I designed a bigger and more complex layout of „switch holes“ inside the „distance grid“.<br>
			The switch holes are VERTEILT all over the mat.<br>
			I kept all the cut out pieces in order to change the design as I need it by putting them back in place.<br><br>

			„Raster_Styro.jpg“


			2) <br>
			I changed the switch design: they now consist of two carpet-size cardboard pieces that are supplied with „circuit lanes“ made of aluminium foil. <br>
			There are two cardboard pieces: one is equipped with the bottom part of each switch, the other one is equipped with the upper part. <br>
			The bottom part features eight and the upper part features six „circuit lanes“ that are located in a way so that they form a kind of matrix-grid when they are put on top of each other. <br>

			Raster_Karton.jpg <br><br>
			Zeichnung_Karton.jpg
			Zeichnung_Karton2.jpg
			Zeichnung_Karton3.jpg
			Alu_Karton.jpg
			Raster_Alu_Karton.jpg
			Alu_Karton2.jpg

			I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize the amount of pins being used.<br><br>

			Schematic_Raster_Styro.jpg
			Alu_Resistor_Ladder.jpg
			Alu_Resistor_Ladder2.jpg

			As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>
			Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“ and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>


			Arduino_Raster_Karton.jpg


			3)<br>
			The resistor ladder idea did not really work.<br>
			Therefore I decided to get a bit more into working with the Arduino Keypad library.<br>
			The library is made for a 4x3 keypad matrix.<br>
			This layout can easily be changed by adding more COLS and ROWS to the array.<br><br>

			You can find more information about the library here:<br><br>


			http://playground.arduino.cc/Code/Keypad
			http://www.dummies.com/how-to/content/how-to-specify-userdefined-functions-for-your-keyp.html


			Arduino_Raster_Matrix_Carpet.png


			External pullup or pulldown resistors do not need to be added.<br>
			The code uses the built in IMPUT_PULLUP command. <br>
			It is also configured to have a multi button press function for which you normally have to add diodes to each input in order to prevent short circuits.<br>
			I don’t exactly know why but the comments tell that these external diodes do not have to be added when using the keypad library.<br>

Veja6203 at 07:24, 15 June 2016

2016-06-15T07:24:56Z

← Older revision		Revision as of 07:24, 15 June 2016
Line 90:		Line 90:

	We stopped our experiment as soon as we realized that we would need a lot of (expensive) relays to control<br> every available sound on the toy chip.<br>		We stopped our experiment as soon as we realized that we would need a lot of (expensive) relays to control<br> every available sound on the toy chip.<br>
	[https://en.wikipedia.org/wiki/Darlington_transistor (see Darlington Transistor on Wikipedia) ]
			[https://en.wikipedia.org/wiki/Darlington_transistor see "Darlington Transistor" on Wikipedia ]
	<br><br>		<br><br>

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	In order to solve these issues in the future I need to learn about programming „arrays“ and „forloops“ that<br> can help minimizing the amount of code.<br>		In order to solve these issues in the future I need to learn about programming „arrays“ and „forloops“ that<br> can help minimizing the amount of code.<br>
	The overlap problem could be solved by using binary functions / average measurements that define clearer<br> value states. <br><br>		The overlap problem could be solved by using binary functions / average measurements that define clearer<br> value states. <br>

			[http://playground.arduino.cc/Main/KeypadTutorial see "Arduino Keyboard Matrix Tutorial"]
			<br><br>

	[[File:matrix_sketch_1.jpg]]<br><br>		[[File:matrix_sketch_1.jpg]]<br><br>

Veja6203 at 07:22, 15 June 2016

2016-06-15T07:22:59Z

← Older revision		Revision as of 07:22, 15 June 2016
Line 86:		Line 86:

	We had the idea to further influence and control the sounds with an external switching device.<br>		We had the idea to further influence and control the sounds with an external switching device.<br>
	Our solution was a chain of two relays [http://cdn-reichelt.de/documents/datenblatt/C300/RELAIS-FTRK1.pdf (this one)] controlled by the arduino via a darlington transistor [http://www.pollin.de/shop/downloads/D101063D.PDF ULN2803]. ~~[https://en.wikipedia.org/wiki/Darlington_transistor (see Darlington Transistor on Wikipedia) ]~~ <br>		Our solution was a chain of two relays [http://cdn-reichelt.de/documents/datenblatt/C300/RELAIS-FTRK1.pdf (this one)] controlled by the arduino via a darlington transistor [http://www.pollin.de/shop/downloads/D101063D.PDF ULN2803]. <br>
	These relays allowed us to turn the sound on and off so that little pieces of the sounds could be cut out.		These relays allowed us to turn the sound on and off so that little pieces of the sounds could be cut out.

	We stopped our experiment as soon as we realized that we would need a lot of (expensive) relays to control<br> every available sound on the toy chip.<br><br>		We stopped our experiment as soon as we realized that we would need a lot of (expensive) relays to control<br> every available sound on the toy chip.<br>
			[https://en.wikipedia.org/wiki/Darlington_transistor (see Darlington Transistor on Wikipedia) ]
			<br><br>

	[[File:hacked_toy_matrix_sound.jpg]]<br><br>		[[File:hacked_toy_matrix_sound.jpg]]<br><br>

Veja6203 at 07:21, 15 June 2016

2016-06-15T07:21:56Z

← Older revision		Revision as of 07:21, 15 June 2016
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	In the second experiment we took a closer look at a toy including a keyboard matrix to play a funny collection<br> of sounds.<br>		In the second experiment we took a closer look at a toy including a keyboard matrix to play a funny collection<br> of sounds.<br>
	At first we traced each tone back to its switch on the matrix.<br>		At first we traced each tone back to its switch on the matrix.<br>
	Then we soldered ~~external~~ wires to the sound terminals in order to make the sounds externally accessible.<br><br>		Then we soldered wires to the sound terminals in order to make the sounds externally accessible.<br><br>

	[[File:hacked_toy_matrix_l1.jpg]]<br><br>		[[File:hacked_toy_matrix_l1.jpg]]<br><br>
Line 86:		Line 86:

	We had the idea to further influence and control the sounds with an external switching device.<br>		We had the idea to further influence and control the sounds with an external switching device.<br>
	Our solution was a chain of two relays controlled by the arduino via a ~~multiple~~ transistor IC (~~ULN…~~).<br>		Our solution was a chain of two relays [http://cdn-reichelt.de/documents/datenblatt/C300/RELAIS-FTRK1.pdf (this one)] controlled by the arduino via a darlington transistor [http://www.pollin.de/shop/downloads/D101063D.PDF ULN2803]. [https://en.wikipedia.org/wiki/Darlington_transistor (see Darlington Transistor on Wikipedia) ] <br>
	These relays allowed us to turn the sound on and off so that little pieces of the sounds could be cut out.		These relays allowed us to turn the sound on and off so that little pieces of the sounds could be cut out.

Veja6203 at 11:11, 12 June 2016

2016-06-12T11:11:17Z

← Older revision		Revision as of 11:11, 12 June 2016
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	A cool discovery:		A cool discovery:
	The multimeter shows that I get a certain value of resistance for each button when all the ~~vertically and~~<br> all the horizontally connected „lines“ are connected together. <br><br>		The multimeter shows that I get a certain value of resistance for each button when all the<br> vertically and all the horizontally connected „lines“ are connected together. <br><br>

	[[File:resistor_values_toy_matrix.jpg]]<br><br>		[[File:resistor_values_toy_matrix.jpg]]<br><br>

← Older revision		Revision as of 08:29, 1 August 2016
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	[https://vimeo.com/170147174 ===> VIDEO]		[https://vimeo.com/170147174 ===> VIDEO]


	__________________________________________________________		__________________________________________________________



	Finishing the prototype:<br><br>		Finishing the prototype:<br><br>
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	I changed the switch design: they now consist of two carpet-size cardboard pieces that are supplied with „circuit lanes“ made of aluminium foil. <br>		I changed the switch design: they now consist of two carpet-size cardboard pieces that are supplied with „circuit lanes“ made of aluminium foil. <br>
	There are two cardboard pieces: one is equipped with the bottom part of each switch, the other one is equipped with the upper part. <br>		There are two cardboard pieces: one is equipped with the bottom part of each switch, the other one is equipped with the upper part. <br>
	The bottom part features eight and the upper part features six „circuit lanes“ that are located in a way so that they form a kind of matrix-grid when they are put on top of each other. <br>		The bottom part features eight and the upper part features six „circuit lanes“ that are located in a way so that they form a kind of matrix-grid <br> when they are put on top of each other. <br>

	[[File:Raster_Karton.jpg]] <br><br>		[[File:Raster_Karton.jpg]] <br><br>
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	[[File:Alu_Karton2.jpg]]<br><br>		[[File:Alu_Karton2.jpg]]<br><br>

	I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize the amount of pins being used.<br><br>		I first planned to use a resistor ladder for the Analog input pin of the arduino in order to minimize <br> the amount of pins being used.<br><br>

	[[File:Schematic_Raster_Styro.jpg]]<br><br>		[[File:Schematic_Raster_Styro.jpg]]<br><br>
Line 230:		Line 233:
	[[File:Alu_Resistor_Ladder2.jpg]]<br><br>		[[File:Alu_Resistor_Ladder2.jpg]]<br><br>

	As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>		As this did not work out (too many delays in the code, too slow, a lot of noise) I changed the design <br>by attaching a separate wire to each of the eight „circuit lanes“ that go to the Arduinos digital input.<br>
	Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“ and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>		Now there are 6 + 8 = 14 wires coming out of the carpet. 6 of them are used as „digital out HIGH signals“<br> and the other 8 are used as „digital in, normally LOW“ pins that check if a button is pressed.<br>


Line 255:		Line 258:
	External pullup or pulldown resistors do not need to be added.<br>		External pullup or pulldown resistors do not need to be added.<br>
	The code uses the built in IMPUT_PULLUP command. <br>		The code uses the built in IMPUT_PULLUP command. <br>
	It is also configured to have a multi button press function for which you normally have to add diodes to each input in order to prevent short circuits.<br>		It is also configured to have a multi button press function for which you normally have to add diodes to each input<br> in order to prevent short circuits.<br>
	I don’t exactly know why but the comments tell that these external diodes do not have to be added when using the keypad library.<br>		I don’t exactly know why but the comments tell that these external diodes do not have to be added when using <br>the keypad library.<br>