LinkerKit for Raspberry Pi - Revision history

Alvin at 10:00, 20 February 2014

2014-02-20T10:00:44Z

Jingfeng: /* Tutorial */

2014-01-01T20:53:12Z

‎Tutorial

Jingfeng: /* Tutorial */

2013-07-31T15:58:51Z

‎Tutorial

Jingfeng: /* Tutorial */

2013-07-31T15:57:49Z

‎Tutorial

Jingfeng: /* Linker Relay */

2013-07-31T15:55:11Z

‎Linker Relay

Jingfeng: /* Tutorial */

2013-07-31T15:53:57Z

‎Tutorial

Jingfeng: /* Tutorial */

2013-07-31T15:52:33Z

‎Tutorial

Jingfeng: /* Linker Light Sensor */

2013-07-31T15:51:05Z

‎Linker Light Sensor

Jingfeng: /* Tutorial */

2013-07-31T15:49:48Z

‎Tutorial

Jingfeng: /* Linker LED */

2013-07-31T15:48:55Z

‎Linker LED

← Older revision		Revision as of 10:00, 20 February 2014
Line 313:		Line 313:

	</syntaxhighlight>		</syntaxhighlight>
		+
		+	==How to buy==
		+	Here to buy on [http://store.linksprite.com/linker-kit-for-raspberry-pi-pcduino/ store]

@@ Line 21: / Line 21: @@
 ==Tutorial==
-In this tutorial, we are going to explain how to use Python to do the experiments:
+In this tutorial, we are going to explain how to use Python to do the experiments.
 === Environment Setup ===
@@ Line 45: / Line 50: @@
 ===Linker Button===
-Connect linker_led to pin 27 of RPI, connect linker_button to pin 23 of RPI
+Connect linker_led to pin 24 of RPI, connect linker_button to pin 23 of RPI
@@ Line 54: / Line 59: @@
 import RPi.GPIO as GPIO
-led_pin = 27
+led_pin = 24
 button_pin = 23
@@ Line 61: / Line 66: @@
 GPIO.setup( button_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-print ("\nlinker_led pin 27 , linker_button pin 23\n")
+print ("\nlinker_led pin 24 , linker_button pin 23\n")
 while True:
@@ Line 73: / Line 78: @@
-Connect linker led  to pin 27 of RPI.
+Connect linker led  to pin 24 of RPI.
 Python code:
@@ Line 83: / Line 88: @@
 import time
-led_pin = 27
+led_pin = 24
 GPIO.setmode(GPIO.BCM)
 GPIO.setup(led_pin,GPIO.OUT)
-print "\nlinker led pin 27\n"
+print "\nlinker led pin 24\n"
 while True:
@@ Line 112: / Line 117: @@
 import time
-led_pin = 27
+led_pin = 24
 # A0 = 0, A1 = 1, A2 = 2, A3 =3
@@ Line 122: / Line 127: @@
 spi.open(0,0)
-print "\nlinker led pin 27"
+print "\nlinker led pin 24"
 print ("Please the linker_temperature is connected to A%1d\n" % temp_channel)
 time.sleep(3)
@@ Line 255: / Line 260: @@
 ===Linker Tilt===
-To use this module with RPI, please connect led module to pin 27 of RPI, and tilt module to pin 23.
+To use this module with RPI, please connect led module to pin 24 of RPI, and tilt module to pin 23.
 Python code:
@@ Line 263: / Line 268: @@
 import RPi.GPIO as GPIO
-led_pin = 27
+led_pin = 24
 tilt_pin = 23
@@ Line 283: / Line 288: @@
 ===Linker Touch Sensor ===
-To use this module with RPI, please connect led module to pin 27 of RPI, and touch module to pin 23.
+To use this module with RPI, please connect led module to pin 24 of RPI, and touch module to pin 23.
 Python code:
@@ Line 291: / Line 296: @@
 import RPi.GPIO as GPIO
-led_pin = 27
+led_pin = 24
 touch_sensor_pin = 23
@@ Line 298: / Line 303: @@
 GPIO.setup( touch_sensor_pin, GPIO.IN, pull_up_down=GPIO.PUD_UP)
-print "linker_led pin 27 , linker touch_sensor pin 23"
+print "linker_led pin 24 , linker touch_sensor pin 23"
 while True:

@@ Line 277: / Line 277: @@
 	else :
 		GPIO.output(led_pin,False)
 </syntaxhighlight>

← Older revision		Revision as of 15:57, 31 July 2013
Line 252:		Line 252:
	print("-------------------------")		print("-------------------------")
	time.sleep(0.5)</syntaxhighlight>		time.sleep(0.5)</syntaxhighlight>
		+
		+	===Linker Tilt===
		+
		+	To use this module with RPI, please connect led module to pin 27 of RPI, and tilt module to pin 23.
		+
		+	Python code:
		+
		+	<syntaxhighlight lang="c">
		+
		+	import RPi.GPIO as GPIO
		+
		+	led_pin = 27
		+	tilt_pin = 23
		+
		+	GPIO.setmode( GPIO.BCM )
		+	GPIO.setup( led_pin,GPIO.OUT )
		+	GPIO.setup( tilt_pin, GPIO.IN, pull_up_down = GPIO.PUD_UP)
		+
		+	print "\nlinker_led pin 27 , linker_tilt pin 23\n"
		+
		+	while True:
		+	if GPIO.input(tilt_pin):
		+	GPIO.output(led_pin,True)
		+	else :
		+	GPIO.output(led_pin,False)
		+
		+	</syntaxhighlight>

@@ Line 149: / Line 149: @@
 ===Linker Relay===
-To use this module with RPI, we need a [http://linksprite.com/wiki/index.php5?title=Linker_kit_Base_Shield_for_Raspberry_Pi_with_ADC_Interface  shield ].
+To use this module with RPI, connect it to pin 23 of RPI:
 Python code:
@@ Line 174: / Line 172: @@
 </syntaxhighlight>
 ===Linker Slide Potentiometer===

← Older revision		Revision as of 15:53, 31 July 2013
Line 214:		Line 214:

	</syntaxhighlight>		</syntaxhighlight>
		+
		+
		+	===Linker Temperature===
		+
		+	To use this module with RPI, we need a [http://linksprite.com/wiki/index.php5?title=Linker_kit_Base_Shield_for_Raspberry_Pi_with_ADC_Interface shield ].
		+
		+	If you don't have this shield, you can follow the instructions at [http://scruss.com/blog/2013/02/02/simple-adc-with-the-raspberry-pi/ here].
		+
		+	Python code:
		+
		+	<syntaxhighlight lang="c">
		+	import spidev
		+	import time
		+
		+	# A0 = 0, A1 = 1, A2 = 2, A3 =3
		+	temp_channel = 0
		+	print ("\nPlease the linker_temperature is connected to A%1d\n" % temp_channel)
		+	time.sleep(3)
		+
		+	spi = spidev.SpiDev()
		+	spi.open(0,0)
		+
		+	def readadc(adcnum):
		+	# read SPI data from MCP3004 chip, 4 possible adc's (0 thru 3)
		+	if adcnum > 3 or adcnum < 0:
		+	return -1
		+	r = spi.xfer2([1,8+adcnum <<4,0])
		+	adcout = ((r[1] &3) <<8)+r[2]
		+	return adcout
		+
		+	while True:
		+	value = readadc(temp_channel)
		+	volts = (value * 3.3) / 1024
		+	temperature_C = (volts - 0.5) * 100
		+	temperature_F = (temperature_C * 9 / 5) + 32
		+
		+	print("volts = %5.3f V" % volts )
		+	print("%4.1f degrees C" % temperature_C)
		+	print("%4.1f degrees F" % temperature_F)
		+	print("-------------------------")
		+	time.sleep(0.5)</syntaxhighlight>

@@ Line 172: / Line 172: @@
 	GPIO.output(relay_pin,False)
 	time.sleep(0.5)
 </syntaxhighlight>

← Older revision		Revision as of 15:49, 31 July 2013
Line 103:		Line 103:

	If you don't have this shield, you can follow the instructions at [http://scruss.com/blog/2013/02/02/simple-adc-with-the-raspberry-pi/ here].		If you don't have this shield, you can follow the instructions at [http://scruss.com/blog/2013/02/02/simple-adc-with-the-raspberry-pi/ here].
		+
		+	Python code:
		+
		+	<syntaxhighlight lang="c">
		+
		+	import RPi.GPIO as GPIO
		+	import spidev
		+	import time
		+
		+	led_pin = 27
		+
		+	# A0 = 0, A1 = 1, A2 = 2, A3 =3
		+	temp_channel = 0
		+
		+	GPIO.setmode( GPIO.BCM )
		+	GPIO.setup( led_pin,GPIO.OUT )
		+	spi = spidev.SpiDev()
		+	spi.open(0,0)
		+
		+	print "\nlinker led pin 27"
		+	print ("Please the linker_temperature is connected to A%1d\n" % temp_channel)
		+	time.sleep(3)
		+
		+	def readadc(adcnum):
		+	# read SPI data from MCP3004 chip, 4 possible adc's (0 thru 3)
		+	if adcnum > 3 or adcnum < 0:
		+	return -1
		+	r = spi.xfer2([1,8+adcnum <<4,0])
		+	adcout = ((r[1] &3) <<8) + r[2]
		+	return adcout
		+
		+	while True:
		+	value = readadc(temp_channel)
		+	volts = (value * 3.3) / 1024
		+	print("value = %4d/1023" % value)
		+	print("volts = %5.3f V\n" % volts )
		+	if value > 10 :
		+	GPIO.output(led_pin,True)
		+	else :
		+	GPIO.output(led_pin,False)
		+	time.sleep(0.5)
		+
		+	</syntaxhighlight>