SparkFun: SoftPot Variable Potentiometer - Revision history

Yoder: Updated grading comments

2012-10-17T20:51:22Z

Updated grading comments

2012-10-17T06:58:45Z

‎Sample C Code: inserted better header with name

2012-10-17T06:57:34Z

‎Sample C Code: Updated to loop and inserted git repository

2012-10-16T16:34:07Z

‎Sample C Code: more description on pin

2012-10-16T16:18:30Z

‎Overview: added picture

2012-10-16T16:18:16Z

‎Bone Usage: removed picture

2012-10-16T16:17:30Z

‎Bone Usage

2012-10-03T16:46:12Z

2012-10-03T16:09:49Z

2012-10-03T16:06:13Z

Added Grade

@@ Line 3: / Line 3: @@
 <pre style="color:red">
-Overview:  1, show a picture
+Overview:  2
-Wiring:   1, give specific example.  Suggest which pin to connect to AIN.  Which header are you using?  P8, P9?
+Wiring:    1, which header are the pins attached to?
-Code:     1, make the code loop and continually display the value.
+Code:      2
-git/Compiles with make: 0, put in git
+git/Compiles with make: 2
-Demo:     0
+Demo:      2
-Total:    3
+Total:     9
-Comments:  More details are needed.  Please supply and I'll regrade.
+Comments:  Much better.  Thanks...
 </pre>

@@ Line 33: / Line 33: @@
 <pre>
-/** Demonstrates simple usage of the SoftPot variable potentiometer
+/** demonstrates usage of the SoftPot variable potentiometer
 */

@@ Line 27: / Line 27: @@
 == Sample C Code ==
-This code will give a simple readout of the current position the SoftPot is being touched. Software AIN3, header P9 pin 37 (hardware AIN2), is being used as the input.
+This code will give a simple readout of the current position the SoftPot is being touched. The value will be printed once every second.
 <pre>
@@ Line 49: / Line 51: @@
 		exit(1);
+	}
-	rewind(fp);
+	while(1){ //will run forever
-	//read value
+		rewind(fp);
-	fgets(buf, 64, fp);
+		//read value
-	//format for printing
+		fgets(buf, 64, fp);
-	printf("The SoftPot was touched at %d%\n", 101*atoi(buf)/4095); //101 for 0-100
+		//format for printing
 	//close file pointer
 	fclose(fp);

@@ Line 27: / Line 27: @@
 == Sample C Code ==
-This code will give a simple readout of the current position the SoftPot is being touched. AIN3, pin 37, is being used as the input.
+This code will give a simple readout of the current position the SoftPot is being touched. Software AIN3, header P9 pin 37 (hardware AIN2), is being used as the input.
 <pre>

@@ Line 15: / Line 15: @@
 The softpot is a thin potentiometer that can be used by just touching along the strip. The following is an excerpt from the SparkFun web site:
 ''These are very thin variable potentiometers. By pressing on various positions along the strip, you vary the resistance.''
+[[File:SparkFunSoftPotBreadboard.jpg|200px|thumb|right|SoftPot on breadboard hooked to power and signal line]]
 == Inputs and Outputs ==

← Older revision		Revision as of 16:18, 16 October 2012
Line 24:		Line 24:

	Hook up pin 1 on the SoftPot to GNDA_ADC (pin 34) and pin 3 on the SoftPot to VDD_ADC(1.8V) (pin 32). Pin 2 on the SoftPot can be connected to any remaining AIN channels. This voltage can then be read as any normal analog in reading.		Hook up pin 1 on the SoftPot to GNDA_ADC (pin 34) and pin 3 on the SoftPot to VDD_ADC(1.8V) (pin 32). Pin 2 on the SoftPot can be connected to any remaining AIN channels. This voltage can then be read as any normal analog in reading.
−	~~[[File:SparkFunSoftPotBreadboard.jpg\|200px\|thumb\|right\|SoftPot on breadboard hooked to power and signal line]]~~

	== Sample C Code ==		== Sample C Code ==

← Older revision		Revision as of 16:17, 16 October 2012
Line 24:		Line 24:

	Hook up pin 1 on the SoftPot to GNDA_ADC (pin 34) and pin 3 on the SoftPot to VDD_ADC(1.8V) (pin 32). Pin 2 on the SoftPot can be connected to any remaining AIN channels. This voltage can then be read as any normal analog in reading.		Hook up pin 1 on the SoftPot to GNDA_ADC (pin 34) and pin 3 on the SoftPot to VDD_ADC(1.8V) (pin 32). Pin 2 on the SoftPot can be connected to any remaining AIN channels. This voltage can then be read as any normal analog in reading.
		+	[[File:SparkFunSoftPotBreadboard.jpg\|200px\|thumb\|right\|SoftPot on breadboard hooked to power and signal line]]

	== Sample C Code ==		== Sample C Code ==

@@ Line 1: / Line 1: @@
 [[Category:ECE497]]
 [[Category:SparkFun]]
 == Overview ==