Tutorials/Using Fischertechnik Sensors with the VEX Cortex - Revision history

Bfeher at 17:39, 7 May 2012

2012-05-07T17:39:55Z

Bfeher: /* Analog Sensors Example: Fischertechnic Photoresistor */

2012-05-07T15:55:08Z

Analog Sensors Example: Fischertechnic Photoresistor

Bfeher: /* Analog Sensors Example: Fischertechnic Photoresistor */

2012-05-07T15:53:52Z

Analog Sensors Example: Fischertechnic Photoresistor

Bfeher at 15:39, 7 May 2012

2012-05-07T15:39:12Z

Bfeher at 15:37, 7 May 2012

2012-05-07T15:37:12Z

Bfeher: /* Digital Sensors Example: Fischertechnic Touch Sensor */

2012-05-07T15:33:46Z

Digital Sensors Example: Fischertechnic Touch Sensor

Bfeher: /* Digit */

2012-05-07T15:32:21Z

Digit

Bfeher at 15:28, 7 May 2012

2012-05-07T15:28:50Z

Bfeher: /* Analog Sensors Example: Fischertechnic Photoresistor */

2012-05-07T15:28:18Z

Analog Sensors Example: Fischertechnic Photoresistor

Bfeher: /* Analog Sensors Example: Fischertechnic Photoresistor */

2012-05-07T15:27:38Z

Analog Sensors Example: Fischertechnic Photoresistor

@@ Line 1: / Line 1: @@
 {{DISPLAYTITLE:{{SUBPAGENAME}}}}
-<yambe:breadcrumb self="VEX Speaker module">Tutorials|Tutorials</yambe:breadcrumb>
+<yambe:breadcrumb self="Using Fischertechnik Sensors with the VEX Cortex">Tutorials|Tutorials</yambe:breadcrumb>
 <br />

@@ Line 23: / Line 23: @@
 {|width="740px"
 |-
-|Based on the [[File:Cortex schematic.pdf|VEX Cortex Schematic]], the SIGNAL line in the ANALOG INPUTS bank is closest to the USB Port in the center of the Cortex, with the +5 VOLTS line next, and finally the GROUND line. The Fischertechnic analog sensors only have two output pins, and we’ll be connecting them to the SIGNAL and +5V lines.
+|Based on the [[Media:Cortex schematic.pdf|VEX Cortex Schematic]], the SIGNAL line in the ANALOG INPUTS bank is closest to the USB Port in the center of the Cortex, with the +5 VOLTS line next, and finally the GROUND line. The Fischertechnic analog sensors only have two output pins, and we’ll be connecting them to the SIGNAL and +5V lines.
 |-
 |colspan="2"|[[Image:tut_fischertechnik_2.png|left|Schematic]]

@@ Line 23: / Line 23: @@
 {|width="740px"
 |-
-|Based on the [http://www.education.rec.ri.cmu.edu/products/teaching_robotc_cortex/reference/cortex_schematic.pdf VEX Cortex Schematic], the SIGNAL line in the ANALOG INPUTS bank is closest to the USB Port in the center of the Cortex, with the +5 VOLTS line next, and finally the GROUND line. The Fischertechnic analog sensors only have two output pins, and we’ll be connecting them to the SIGNAL and +5V lines.
+|Based on the [[File:Cortex schematic.pdf|VEX Cortex Schematic]], the SIGNAL line in the ANALOG INPUTS bank is closest to the USB Port in the center of the Cortex, with the +5 VOLTS line next, and finally the GROUND line. The Fischertechnic analog sensors only have two output pins, and we’ll be connecting them to the SIGNAL and +5V lines.
 |-
 |colspan="2"|[[Image:tut_fischertechnik_2.png|left|Schematic]]

@@ Line 33: / Line 33: @@
 |colspan="2"|With the sensor properly connected, configuring it in ROBOTC is no more difficult than any of the official VEX sensors. In the Motors and Sensors Setup, on the VEX 2.0 Analog Sensors 1-8 tab, give the sensor a name and choose from Potentiometer, Light Sensor, or Line Follower for the sensor type. Any of these three types will work, as they are set up to return the raw A-to-D (Analog-to-Digital) values from the sensor. The Gyro and Accelerometer sensor types perform additional calculations on the raw sensor data, making them inappropriate choices for a basic analog sensor like the photoresistor. The VEX Light Sensor is the most similar to the Fischertechnik photoresistor, so it’s the logical choice.
 |-
-|colspan="2"|[[Image:tut_fischertechnik_4.png|left]]
+|colspan="2"|[[Image:tut_fischertechnik_4.png|700px|left]]
 |-
 |colspan="2"|The values from the photoresistor can be used in your ROBOTC programs just like any of the other sensors – using the <span class="keywordB">SensorValue</span><span class="codePunc">[]</span> command. The ROBOTC Natural Language commands like <span class="keywordB">untilLight</span><span class="codePunc">()</span> and <span class="keywordB">untilDark</span><span class="codePunc">()</span> will also work!<br />
@@ Line 60: / Line 60: @@
 |Unlike the photoresistor, the touch sensor has three pins and we’ll need to be careful about how we plug them into the Cortex. We’ll need to plug the pin labeled 1 into the GROUND line on the Cortex, the pin labeled 2 into the SIGNAL line, and the pin labeled 3 into the +5V line. Failure to do so can result in the sensor always reading 1, always reading 0, or having the values reversed (0 = pushed, 1 = not pushed).
 |-
-|colspan="2"|[[Image:tut_fischertechnik_5.jpg|left|Touch Sensor Closeup]]
+|colspan="2"|[[Image:tut_fischertechnik_5.jpg|left|700px|Touch Sensor Closeup]]
 |-
 |colspan="2"|Below is a picture of the sensor connected to the Cortex. Note that all three lines are used, and that the Fischertechnik connectors were again used to connect the sensor to jumper cables.
 |-
-|colspan="2"|[[Image:tut_fischertechnik_6.jpg|left|Touch Sensor]]
+|colspan="2"|[[Image:tut_fischertechnik_6.jpg|left|700px|Touch Sensor]]
 |-
 |colspan="2"|The Fischertechnik touch sensor can be configured as a Touch Sensor or Digital Input in the ROBOTC Motors and Sensors Setup window.
 |-
-|colspan="2"|[[Image:tut_fischertechnik_7.png|left]]
+|colspan="2"|[[Image:tut_fischertechnik_7.png|700px|left]]
 |-
 |colspan="2"|The values from the digital touch sensor can be used in your ROBOTC programs just like any of the other sensors – using the <span class="keywordB">SensorValue</span><span class="codePunc">[]</span> command. The ROBOTC Natural Language commands like <span class="keywordB">untilLight<span class="codePunc">()</span> and <span class="keywordB">untilDark<span class="codePunc">()</span> will also work!<br />

@@ Line 29: / Line 29: @@
 |colspan="2"|In the picture below, we used the connector pins that come with the Fischertechnik system to connect the photoresistor to male-to-male jumper cables, which can be plugged directly into the Cortex. Note that with these basic analog sensors, polarity does not matter; it only matters that you use the SIGNAL and +5V lines on the Cortex.
 |-
-|colspan="2"|[[Image:tut_fischertechnik_3.jpg|left|700px]]
+|colspan="2"|[[Image:tut_fischertechnik_3.jpg|left|700px|Photoresistor]]
 |-
 |colspan="2"|With the sensor properly connected, configuring it in ROBOTC is no more difficult than any of the official VEX sensors. In the Motors and Sensors Setup, on the VEX 2.0 Analog Sensors 1-8 tab, give the sensor a name and choose from Potentiometer, Light Sensor, or Line Follower for the sensor type. Any of these three types will work, as they are set up to return the raw A-to-D (Analog-to-Digital) values from the sensor. The Gyro and Accelerometer sensor types perform additional calculations on the raw sensor data, making them inappropriate choices for a basic analog sensor like the photoresistor. The VEX Light Sensor is the most similar to the Fischertechnik photoresistor, so it’s the logical choice.
@@ Line 49: / Line 49: @@
 </syntaxhighlight>
 |-
 |}
 <br />
@@ Line 87: / Line 90: @@
 |As you can see, connecting third-party sensors to the Cortex and making use of them in ROBOTC isn’t much more complicated than using any of the official sensors. Happy programming!
 |}
 <br />

@@ Line 57: / Line 57: @@
 |Unlike the photoresistor, the touch sensor has three pins and we’ll need to be careful about how we plug them into the Cortex. We’ll need to plug the pin labeled 1 into the GROUND line on the Cortex, the pin labeled 2 into the SIGNAL line, and the pin labeled 3 into the +5V line. Failure to do so can result in the sensor always reading 1, always reading 0, or having the values reversed (0 = pushed, 1 = not pushed).
 |-
-|colspan="2"|[[Image:tut_fischertechnik_5.jpg|left|Schematic]]
+|colspan="2"|[[Image:tut_fischertechnik_5.jpg|left|Touch Sensor Closeup]]
 |-
 |colspan="2"|Below is a picture of the sensor connected to the Cortex. Note that all three lines are used, and that the Fischertechnik connectors were again used to connect the sensor to jumper cables.
 |-
-|colspan="2"|[[Image:tut_fischertechnik_6.jpg|left|700px]]
+|colspan="2"|[[Image:tut_fischertechnik_6.jpg|left|Touch Sensor]]
 |-
 |colspan="2"|The Fischertechnik touch sensor can be configured as a Touch Sensor or Digital Input in the ROBOTC Motors and Sensors Setup window.
@@ Line 83: / Line 83: @@
 |colspan="2"|And the Sensor Debug window will display whether the sensor is pressed in or released:
 |-
-|[[Image:tut_fischertechnik_8.png|left]]
+|[[Image:tut_fischertechnik_8.png|left|Sensor Debug - Digital]]
 |-
 |As you can see, connecting third-party sensors to the Cortex and making use of them in ROBOTC isn’t much more complicated than using any of the official sensors. Happy programming!

@@ Line 52: / Line 52: @@
 <br />
-== Digit ==
+== Digital Sensors Example: Fischertechnic Touch Sensor ==
 <br />

@@ Line 50: / Line 50: @@
 |-
 |}
 <br />

@@ Line 35: / Line 35: @@
 |colspan="2"|[[Image:tut_fischertechnik_4.png|left]]
 |-
-|colspan="2"|The values from the photoresistor can be used in your ROBOTC programs just like any of the other sensors – using the <span class="keywordB">SensorValue</span><span class="codePunc">[]</span> command. The ROBOTC Natural Language commands like <span class="keywordB">untilLight<span class="codePunc">()</span> and <span class="keywordB">untilDark<span class="codePunc">()</span> will also work!<br />
+|colspan="2"|The values from the photoresistor can be used in your ROBOTC programs just like any of the other sensors – using the <span class="keywordB">SensorValue</span><span class="codePunc">[]</span> command. The ROBOTC Natural Language commands like <span class="keywordB">untilLight</span><span class="codePunc">()</span> and <span class="keywordB">untilDark</span><span class="codePunc">()</span> will also work!<br />
 <syntaxhighlight lang="ROBOTC">
 #pragma config(Sensor, in1,    FTPhotoresistor, sensorReflection)