Lab-in-a-Box - Revision history

Pew: /* Attenuator Circuit */

2019-01-03T22:33:07Z

‎Attenuator Circuit

Pew: Undo revision 1554 by imported>Pew (talk)

2019-01-03T22:32:34Z

Undo revision 1554 by [[Special:Contributions/imported>Pew|imported>Pew]] ([[User talk:imported>Pew|talk]])

imported>Pew: old & redundant: https://ece.vt.edu/undergrad/tutorials/labinabox

2018-01-04T06:33:43Z

old & redundant: https://ece.vt.edu/undergrad/tutorials/labinabox

imported>Pew at 03:29, 3 January 2018

2018-01-03T03:29:59Z

imported>Mutantmonkey: Link to Gobblerpedia

2011-04-22T03:19:14Z

Link to Gobblerpedia

imported>Rct: /* Parts Kit */

2010-01-04T19:05:32Z

‎Parts Kit

imported>Rct: /* ANDY Board */

2010-01-04T19:00:29Z

‎ANDY Board

imported>Rct: /* Attenuator Circuit */ - Added reference to Experiment 12: Calibrating a Sound Card Oscilloscope.

2010-01-04T18:25:27Z

‎Attenuator Circuit: - Added reference to Experiment 12: Calibrating a Sound Card Oscilloscope.

imported>Cov at 01:53, 24 December 2009

2009-12-24T01:53:53Z

imported>Cov at 20:52, 14 December 2009

2009-12-14T20:52:48Z

@@ Line 17: / Line 17: @@
 ==Attenuator Circuit==
 The attenuator circuit in the Lab-in-a-Box manual is setup for the gain of the Behringer UCA202 on Windows XP. You can either work with your teaching assistant to develop an attenuator circuit that fully compensates for the gain of your system in hardware or use the software tweaks to [[xoscope]] described below.
 The [http://www.ece.vt.edu/tutorials/labinabox.php  ECE: Lab-in-a-Box Tutorials] page has an article [http://www.ece.vt.edu/tutorials/download/Expt12_v5.1.pdf Experiment 12: Calibrating A Sound Card Oscilloscope].  A schematic to be built on the ANDY board is on page 3.  The tutorial uses the Zeitnitz windows oscilloscope software.

← Older revision		Revision as of 22:32, 3 January 2019
Line 1:		Line 1:
−	[[Category:~~Pending deletion~~]]	+	The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074 Electric Circuit Analysis Laboratory]] and [[gp:ECE 3074 AC Circuit Analysis Laboratory\|ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard\|breadboard]] called the A&D or "ANDY" board.
		+
		+	=ANDY Board=
		+	The ANDY board has ±9V and +5V sources, clock signal, sine/square wave signal generator, 16 dipswitches, 16 LEDs, and two pushbutton switches. The dipswitches and LEDs are used for digital applications in [[gp:ECE 2504 Introduction to Computer Engineering\|ECE 2504 Introduction to Computer Engineering]]. The signal generator is for RC circuits in the [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074]].
		+
		+	[http://www.ece.vt.edu/cel/Kits/A&D-User-Manual&Test-Procedure-v2.2.pdf A&D User Manual & Test Procedure v2.2]
		+
		+	=Parts Kit=
		+	The parts included with the kit include resistors, capacitors, inductors, light emitting diodes, and a handful of integrated circuits including operational amplifiers, and digital logic chips.
		+
		+	[http://www.ece.vt.edu/cel/Kits/ECE2074&ECE3074-Parts-Kit.html Part Kit Description for ECE 2074 & 3074]
		+
		+	=Carrying/Storage Box=
		+	Some of the articles on the Lab-in-a-Box mention a "high-end tackle box from Walmart" that is used to hold the ANDY board an all of the parts. (Make & Model?)
		+
		+	=Software Oscilloscope=
		+	==Attenuator Circuit==
		+	The attenuator circuit in the Lab-in-a-Box manual is setup for the gain of the Behringer UCA202 on Windows XP. You can either work with your teaching assistant to develop an attenuator circuit that fully compensates for the gain of your system in hardware or use the software tweaks to [[xoscope]] described below.
		+	[[Image:Lab-in-a-Box_attenuator_circuit.png]]
		+
		+	The [http://www.ece.vt.edu/tutorials/labinabox.php ECE: Lab-in-a-Box Tutorials] page has an article [http://www.ece.vt.edu/tutorials/download/Expt12_v5.1.pdf Experiment 12: Calibrating A Sound Card Oscilloscope]. A schematic to be built on the ANDY board is on page 3. The tutorial uses the Zeitnitz windows oscilloscope software.
		+
		+	==Software==
		+	While [[xoscope]] or the Lab-in-a-Box attenuator circuit could use some tweaking to work out of the box together, xoscope can be readily modified to display scaled maximum, minimum and peak-to-peak values. The first step is to obtain the program source code. On a Debian-based systems like Ubuntu, just run <code>sudo apt-get source xoscope</code>.
		+
		+	Once the source has been downloaded and unpacked, edit <code>sc_linux.c</code> to use <code>/dev/dsp1</code> rather than <code>/dev/dsp</code>:
		+	<pre>
		+	sed -ir 's%(#define SOUNDDEVICE "/dev/dsp)(")%\11\2%'
		+	</pre>
		+
		+	Next, modify the display code in <code>display.c</code> to display a scaled value. Around line 186, change the code to read something like the snippet below. Use your multimeter to measure the the RMS voltage, calculate the peak-to-peak that should be displayed and tweak the divisor, re-compile and re-run until the value is correct.
		+	<pre>
		+	else
		+	sprintf(string, " Max:%f - Min:%f = %f Pk-Pk ",
		+	(float)stats.max / 3.2, (float)stats.min / 3.2,
		+	((float)stats.max - (float)stats.min) / 3.2 );
		+	gtk_label_set_text(GTK_LABEL(LU("min_max_label")), string);
		+	</pre>
		+
		+	To compile the modified source, simply run <code>make</code>. To run the newly compiled binary, run <code>./xoscope</code>. Refer to the [[xoscope\|xoscope article]] for instructions on using the scope.
		+
		+	=External Links=
		+	* [http://www.vtnews.vt.edu/story.php?relyear=2009&itemno=20 VT news story]
		+	* [[CEL]] listing of the [http://www.ece.vt.edu/cel/Kits/ECE-Lab-Kits.html#ECE2074ECE3074 lab kit]
		+
		+	[[Category:Hardware]]
		+	[[Category:Deprecated]]

← Older revision		Revision as of 06:33, 4 January 2018
Line 1:		Line 1:
−	~~TODO: Extremely Outdated~~
−
−	The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074 Electric Circuit Analysis Laboratory]] and [[gp:ECE 3074 AC Circuit Analysis Laboratory\|ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard\|breadboard]] called the A&D or "ANDY" board.
−
−	~~=ANDY Board=~~
−	The ANDY board has ±9V and +5V sources, clock signal, sine/square wave signal generator, 16 dipswitches, 16 LEDs, and two pushbutton switches. The dipswitches and LEDs are used for digital applications in [[gp:ECE 2504 Introduction to Computer Engineering\|ECE 2504 Introduction to Computer Engineering]]. The signal generator is for RC circuits in the [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074]].
−
−	~~[http://www.ece.vt.edu/cel/Kits/A&D-User-Manual&Test-Procedure-v2.2.pdf A&D User Manual & Test Procedure v2.2]~~
−
−	~~=Parts Kit=~~
−	~~The parts included with the kit include resistors, capacitors, inductors, light emitting diodes, and a handful of integrated circuits including operational amplifiers, and digital logic chips.~~
−
−	~~[http://www.ece.vt.edu/cel/Kits/ECE2074&ECE3074-Parts-Kit.html Part Kit Description for ECE 2074 & 3074]~~
−
−	~~=Carrying/Storage Box=~~
−	~~Some of the articles on the Lab-in-a-Box mention a "high-end tackle box from Walmart" that is used to hold the ANDY board an all of the parts. (Make & Model?)~~
−
−	~~=Software Oscilloscope=~~
−	~~==Attenuator Circuit==~~
−	The attenuator circuit in the Lab-in-a-Box manual is setup for the gain of the Behringer UCA202 on Windows XP. You can either work with your teaching assistant to develop an attenuator circuit that fully compensates for the gain of your system in hardware or use the software tweaks to [[xoscope]] described below.
−	~~[[Image:Lab-in-a-Box_attenuator_circuit.png]]~~
−
−	The [http://www.ece.vt.edu/tutorials/labinabox.php ECE: Lab-in-a-Box Tutorials] page has an article [http://www.ece.vt.edu/tutorials/download/Expt12_v5.1.pdf Experiment 12: Calibrating A Sound Card Oscilloscope]. A schematic to be built on the ANDY board is on page 3. The tutorial uses the Zeitnitz windows oscilloscope software.
−
−	~~==Software==~~
−	While [[xoscope]] or the Lab-in-a-Box attenuator circuit could use some tweaking to work out of the box together, xoscope can be readily modified to display scaled maximum, minimum and peak-to-peak values. The first step is to obtain the program source code. On a Debian-based systems like Ubuntu, just run <code>sudo apt-get source xoscope</code>.
−
−	~~Once the source has been downloaded and unpacked, edit <code>sc_linux.c</code> to use <code>/dev/dsp1</code> rather than <code>/dev/dsp</code>:~~
−	~~<pre>~~
−	~~sed -ir 's%(#define SOUNDDEVICE "/dev/dsp)(")%\11\2%'~~
−	~~</pre>~~
−
−	Next, modify the display code in <code>display.c</code> to display a scaled value. Around line 186, change the code to read something like the snippet below. Use your multimeter to measure the the RMS voltage, calculate the peak-to-peak that should be displayed and tweak the divisor, re-compile and re-run until the value is correct.
−	~~<pre>~~
−	~~else~~
−	~~sprintf(string, " Max:%f - Min:%f = %f Pk-Pk ",~~
−	~~(float)stats.max / 3.2, (float)stats.min / 3.2,~~
−	~~((float)stats.max - (float)stats.min) / 3.2 );~~
−	~~gtk_label_set_text(GTK_LABEL(LU("min_max_label")), string);~~
−	~~</pre>~~
−
−	To compile the modified source, simply run <code>make</code>. To run the newly compiled binary, run <code>./xoscope</code>. Refer to the [[xoscope\|xoscope article]] for instructions on using the scope.
−
−	~~=External Links=~~
−	* [http://www.vtnews.vt.edu/story.php?relyear=2009&itemno=20 VT news story]
−	* [[CEL]] listing of the [http://www.ece.vt.edu/cel/Kits/ECE-Lab-Kits.html#ECE2074ECE3074 lab kit]
−
−	~~[[Category:Electrical and Computer Engineering]]~~
	[[Category:Pending deletion]]		[[Category:Pending deletion]]

← Older revision		Revision as of 03:29, 3 January 2018
Line 1:		Line 1:
		+	TODO: Extremely Outdated
		+
	The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074 Electric Circuit Analysis Laboratory]] and [[gp:ECE 3074 AC Circuit Analysis Laboratory\|ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard\|breadboard]] called the A&D or "ANDY" board.		The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[gp:ECE 2074 Electric Circuit Analysis Laboratory\|ECE 2074 Electric Circuit Analysis Laboratory]] and [[gp:ECE 3074 AC Circuit Analysis Laboratory\|ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard\|breadboard]] called the A&D or "ANDY" board.

Line 45:		Line 47:

	[[Category:Electrical and Computer Engineering]]		[[Category:Electrical and Computer Engineering]]
		+	[[Category:Pending deletion]]

@@ Line 1: / Line 1: @@
-The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[ECE 2074 Electric Circuit Analysis Laboratory]] and [[ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard|breadboard]] called the A&D or "ANDY" board.
+The '''Lab-in-a-Box''' is an introductory electrical engineering project kit and accompanying textbook used for [[gp:ECE 2074 Electric Circuit Analysis Laboratory|ECE 2074 Electric Circuit Analysis Laboratory]] and [[gp:ECE 3074 AC Circuit Analysis Laboratory|ECE 3074 AC Circuit Analysis Laboratory]]. It includes a [[w:Breadboard|breadboard]] called the A&D or "ANDY" board.
 =ANDY Board=
-The ANDY board has ±9V and +5V sources, clock signal, sine/square wave signal generator, 16 dipswitches, 16 LEDs, and two pushbutton switches. The dipswitches and LEDs are used for digital applications in [[ECE 2504 Introduction to Computer Engineering]]. The signal generator is for RC circuits in the [[ECE 2074 Electric Circuit Analysis Laboratory|ECE 2074]].
+The ANDY board has ±9V and +5V sources, clock signal, sine/square wave signal generator, 16 dipswitches, 16 LEDs, and two pushbutton switches. The dipswitches and LEDs are used for digital applications in [[gp:ECE 2504 Introduction to Computer Engineering|ECE 2504 Introduction to Computer Engineering]]. The signal generator is for RC circuits in the [[gp:ECE 2074 Electric Circuit Analysis Laboratory|ECE 2074]].
 [http://www.ece.vt.edu/cel/Kits/A&D-User-Manual&Test-Procedure-v2.2.pdf A&D User Manual & Test Procedure v2.2]

@@ Line 8: / Line 8: @@
 =Parts Kit=
 The parts included with the kit include resistors, capacitors, inductors, light emitting diodes, and a handful of integrated circuits including operational amplifiers, and digital logic chips.
 =Software Oscilloscope=

@@ Line 11: / Line 11: @@
 The attenuator circuit in the Lab-in-a-Box manual is setup for the gain of the Behringer UCA202 on Windows XP. You can either work with your teaching assistant to develop an attenuator circuit that fully compensates for the gain of your system in hardware or use the software tweaks to [[xoscope]] described below.
 [[Image:Lab-in-a-Box_attenuator_circuit.png]]
 ==Software==

← Older revision		Revision as of 01:53, 24 December 2009
Line 34:		Line 34:
	* [http://www.vtnews.vt.edu/story.php?relyear=2009&itemno=20 VT news story]		* [http://www.vtnews.vt.edu/story.php?relyear=2009&itemno=20 VT news story]
	* [[CEL]] listing of the [http://www.ece.vt.edu/cel/Kits/ECE-Lab-Kits.html#ECE2074ECE3074 lab kit]		* [[CEL]] listing of the [http://www.ece.vt.edu/cel/Kits/ECE-Lab-Kits.html#ECE2074ECE3074 lab kit]
		+
		+	[[Category:Electrical and Computer Engineering]]

@@ Line 7: / Line 7: @@
 The parts included with the kit include resistors, capacitors, inductors, light emitting diodes, and a handful of integrated circuits including operational amplifiers, and digital logic chips.
-=Software Oscilloscope on Linux=
+=Software Oscilloscope=
 While [[xoscope]] or the Lab-in-a-Box attenuator circuit could use some tweaking to work out of the box together, xoscope can be readily modified to display scaled maximum, minimum and peak-to-peak values. The first step is to obtain the program source code. On a Debian-based systems like Ubuntu, just run <code>sudo apt-get source xoscope</code>.