Sparkfun: PIR Motion Sensor - Revision history

Yoder: Added Grade

2012-11-14T19:39:25Z

Added Grade

2012-10-17T23:34:16Z

‎Wiring

2012-10-17T23:27:06Z

‎Sample C Code

2012-10-17T23:25:35Z

2012-10-17T23:24:48Z

2012-10-17T23:24:13Z

2012-10-17T23:12:39Z

‎Sample C Code

2012-10-17T23:05:57Z

‎Inputs and Outputs

2012-10-17T22:54:35Z

‎Overview

2012-10-03T17:15:41Z

@@ Line 3: / Line 3: @@
 <pre style="color:red">
-Overview: 1, Don't just repeat the manual, tell me what you did.
+Overview: 2
-Wiring:   0, Give details on how to wire it up.  Show a diagram.
+Wiring:   2
 Code:     1, Comment you code and give details of how to use it.
-git:      0, put in git
+git:      2, put in git
 Demo:     2
-Total:    4/10
+Total:    9-1=8 (-1 for second try)
-Comments: Many details are missing.  What would you need to tell a beginner
+Comments: Much better
-how to get this to go?
 </pre>

@@ Line 24: / Line 24: @@
 [[File:PIRMotionSensor.jpg|thumb|]]
-This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.
+This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced. Also, when wiring up the device the power pin needs a 10k pull-up resistor.
 === Sample C Code ===

← Older revision		Revision as of 23:27, 17 October 2012
Line 29:		Line 29:

	The GPIO pins the you connect the senor to, is taken in as an argument to the program.		The GPIO pins the you connect the senor to, is taken in as an argument to the program.
		+	Program found at https://github.com/atniptw/ECE497/tree/master/MiniProjects/Project2

	<pre>		<pre>

← Older revision		Revision as of 23:25, 17 October 2012
Line 25:		Line 25:

	This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.		This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.
−
−	~~== Bone Usage ==~~
−
−

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

@@ Line 22: / Line 22: @@
 == Wiring ==
-[[File:PIRMotionSensor.png|thumb|]]
+[[File:PIRMotionSensor.jpg|thumb|]]
 This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.

← Older revision		Revision as of 23:24, 17 October 2012
Line 22:		Line 22:

	== Wiring ==		== Wiring ==
		+	[[File:PIRMotionSensor.png\|thumb\|]]

	This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.		This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.

@@ Line 30: / Line 30: @@
 === Sample C Code ===
 <pre>
 #include <stdio.h>
 #include <stdlib.h>
@@ Line 41: / Line 45: @@
 #include <signal.h>
 #include <unistd.h>
 #include "gpio.h"
@@ Line 50: / Line 56: @@
 #define POLL_TIMEOUT (3 * 1000) /* 3 seconds */
 #define MAX_BUF 64
 /****************************************************************
@@ Line 116: / Line 121: @@
 			printf(".");
+		}
+                /* From the example code for doing interupts */
 		if (fdset[1].revents & POLLPRI) {
 			lseek(fdset[1].fd, 0, SEEK_SET);  // Read from the start of the file
 			len = read(fdset[1].fd, buf, MAX_BUF);
 			printf("\nMotion Detected, value=%c, len=%d\n",
 				 buf[0], len);
 			usleep(5000000);
+		}

@@ Line 21: / Line 21: @@
 I found this tutorial very helpful: [http://bildr.org/2011/06/pir_arduino/ Arduino Tutorial]
-== Inputs and Outputs ==
+== Wiring ==
-This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V.
+This unit works great from 5 to 12V (datasheet shows 12V). You can also install a jumper wire past the 5V regulator on board to make this unit work at 3.3V. Sensor uses 1.6mA@3.3V. For the best results I found that I needed to power the sensor using the constant 5V power source on the BeagleBoard Bone Rail. This has the side effect of the device producing a 5V signal, which is to high to run through the gpio pins on the rail. To fix this the output signal needs to be reduced.
 == Bone Usage ==

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