Sparkfun: Flex Sensor - Revision history

Yoder: Fixed Grade

2012-10-03T19:58:18Z

Fixed Grade

Yoder: Updated Demo score

2012-10-03T19:52:36Z

Updated Demo score

Popenhjc: /* Bone Usage */

2012-10-03T18:48:11Z

‎Bone Usage

Popenhjc: /* Sample C Code */

2012-10-03T18:45:45Z

‎Sample C Code

Popenhjc: /* Bone Usage */

2012-10-03T18:15:59Z

‎Bone Usage

Popenhjc: /* Overview */

2012-10-03T18:15:16Z

‎Overview

Popenhjc: /* Inputs and Outputs */

2012-10-03T18:15:03Z

‎Inputs and Outputs

Popenhjc: /* Bone Usage */

2012-10-03T18:14:29Z

‎Bone Usage

Popenhjc: /* Bone Usage */

2012-10-03T18:13:51Z

‎Bone Usage

Popenhjc: /* Bone Usage */

2012-10-03T18:13:08Z

‎Bone Usage

@@ Line 3: / Line 3: @@
 <pre style="color:red">
-Overview:  1, show a picture of the device that shows what pins it has.
+Overview:  2
-Wiring:   0, Give a specific example of how to wire it.  What pins go where?  Which bone header are you using?  P8, P9?
+Wiring:    2
-You are using a voltage divider, show a diagram of it.
+Code:      2
-Code:     2
+git:       2
-git:    0 put in git
+Demo:      2
-Demo:     2
+Total:    10/10
-Total:    5/10
+Comments:  Thanks for the quick fix. Both on this and your other page.
-Comments:  More details are needed.  I think someone else in the class would have trouble
-reproducing what you have done.
-−
 </pre>

@@ Line 8: / Line 8: @@
 Code:     2
 git:    0 put in git
-Demo:     0
+Demo:     2
-Total:    3/10
+Total:    5/10
 Comments:  More details are needed.  I think someone else in the class would have trouble
 reproducing what you have done.

@@ Line 28: / Line 28: @@
 [[File:FlexSensorWiring.jpg|thumb|Wiring example for the Flex Sensor on a Bone]]
-To interface this with the BeagleBone you just need to connect the flex resistor from the analog VCC to an analog input and another resistor (I used 1.1k&Omega; ) from analog input to analog ground. From there you can read the voltage input and manipulate it using code however desired. In my case I basically took the number that the analog input gave me and manipulated it to average about 1000 samples per second, and display the averaged value. When you bend the resistor the value increases, and when you relax the resistor the value decreases. You can see this in the sample code provided. There is also a picture included that will aid in wiring the sensor to the bone.
+To interface this with the BeagleBone you just need to connect the flex resistor from the analog VCC to an analog input and another resistor (I used 1.1k&Omega; ) from analog input to analog ground(on P9). From there you can read the voltage input and manipulate it using code however desired. In my case I basically took the number that the analog input gave me and manipulated it to average about 1000 samples per second, and display the averaged value. When you bend the resistor the value increases, and when you relax the resistor the value decreases. You can see this in the sample code provided. There is also a picture included that will aid in wiring the sensor to the bone.
 == Reading and Interpreting Analog Input Data ==

← Older revision		Revision as of 18:45, 3 October 2012
Line 34:		Line 34:

	== Sample C Code ==		== Sample C Code ==
		+	The following code can be found through github.
		+
		+	https://github.com/popenhjc/popenhjc_ECE497
		+
		+	You can do a git clone of this repository which includes MiniProject02 folder. Using the make command will make the two c files.
	<pre>		<pre>

@@ Line 28: / Line 28: @@
 [[File:FlexSensorWiring.jpg|thumb|Wiring example for the Flex Sensor on a Bone]]
-To interface this with the BeagleBone you just need to connect the flex resistor from the analog VCC to an analog input and another resistor (I used 1.1k&Omega; ) from analog input to analog ground. From there you can read the voltage input and manipulate it using code however desired. In my case I basically took the number that the analog input gave me and manipulated it to average about 1000 samples per second, and display the averaged value. When you bend the resistor the value increases, and when you relax the resistor the value decreases. You can see this in the sample code provided.
+To interface this with the BeagleBone you just need to connect the flex resistor from the analog VCC to an analog input and another resistor (I used 1.1k&Omega; ) from analog input to analog ground. From there you can read the voltage input and manipulate it using code however desired. In my case I basically took the number that the analog input gave me and manipulated it to average about 1000 samples per second, and display the averaged value. When you bend the resistor the value increases, and when you relax the resistor the value decreases. You can see this in the sample code provided. There is also a picture included that will aid in wiring the sensor to the bone.
 == Reading and Interpreting Analog Input Data ==

← Older revision		Revision as of 18:15, 3 October 2012
Line 16:		Line 16:

	== Overview ==		== Overview ==
		+	[[File:FlexSensor.jpg\|thumb\|Inputs and Outputs for FlexSensor]]

	The [https://www.sparkfun.com/products/10264 product]. The [http://www.sparkfun.com/datasheets/Sensors/Flex/FLEXSENSOR(REVA1).pdf datasheet].		The [https://www.sparkfun.com/products/10264 product]. The [http://www.sparkfun.com/datasheets/Sensors/Flex/FLEXSENSOR(REVA1).pdf datasheet].

← Older revision		Revision as of 18:15, 3 October 2012
Line 22:		Line 22:

	== Inputs and Outputs ==		== Inputs and Outputs ==
−	~~[[File:FlexSensor.jpg\|thumb\|Inputs and Outputs for FlexSensor]]~~
	As for inputs and outputs, the sensor is basically a resistor and thus should be read from the analog input pins. To work with the analog input, you must put 1kΩ resistor from analog ground to the analog input you choose then connect the sensor from the analog VDD to the analog input you choose. The input voltage can then be read by the processor to determine how far the flex sensor is being bent (flexed).		As for inputs and outputs, the sensor is basically a resistor and thus should be read from the analog input pins. To work with the analog input, you must put 1kΩ resistor from analog ground to the analog input you choose then connect the sensor from the analog VDD to the analog input you choose. The input voltage can then be read by the processor to determine how far the flex sensor is being bent (flexed).

@@ Line 26: / Line 26: @@
 == Bone Usage ==
-[[File:FlexSensorWiring.jpg|200x200|Wiring example for the Flex Sensor on a Bone]]
+[[File:FlexSensorWiring.jpg|thumb|Wiring example for the Flex Sensor on a Bone]]
 To interface this with the BeagleBone you just need to connect the flex resistor from the analog VCC to an analog input and another resistor (I used 1.1k&Omega; ) from analog input to analog ground. From there you can read the voltage input and manipulate it using code however desired. In my case I basically took the number that the analog input gave me and manipulated it to average about 1000 samples per second, and display the averaged value. When you bend the resistor the value increases, and when you relax the resistor the value decreases. You can see this in the sample code provided.