Preet's Relay Controller Project - Revision history

Preet: /* Setup Parameters */

2012-10-18T22:41:44Z

‎Setup Parameters

2012-10-18T22:37:58Z

‎Overview

2012-10-13T23:55:20Z

‎Front-End Web Interface

2012-10-13T23:39:49Z

‎Overview

2012-10-13T23:30:29Z

‎GPIO Relays

2012-10-13T23:15:24Z

‎Conclusion

2012-10-13T23:07:59Z

2012-10-12T20:39:48Z

‎Setup IP & Associate

2012-10-12T20:36:22Z

‎Daily Weather Check

2012-10-12T20:34:04Z

‎Tasks

@@ Line 230: / Line 230: @@
 *: Set Flush size: '''<code>set comm size 1024</code>'''
-To optimize data transfer, a character triggering flush is disabled and the flush size is set to 1024 bytes.  When RN-XV receives no data transmission within 10ms, any outstanding data is sent from its RAM to the network (default setting).
+To optimize data transfer, a character triggering flush is disabled and the flush size is set to 1024 bytes.  When RN-XV receives no data transmission within 10ms, any outstanding data is sent from its RAM to the network (default setting).  In the configuration above, whenever 10ms timeout occurs or 1024 characters are sent to RN-XV, it will send the packet over TCP/IP.
 ==== Setup TCP/IP Server ====

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 The extended functionality is the Web GUI*.  The Web interface ('''WI''') not only allows to control SCS, but also view the logs in a graphical way.  For example, '''WI''' can request daily water-times from the SCS and plot a bar-graph to show the user the water history.
 [[File:scs_overview.png|center|frame|SCS Overview]]
 <BR/>

@@ Line 249: / Line 249: @@
 While the SCS software can interact with the '''CI''', '''WI''' encapsulates commands with simple buttons.  This provides a non-technical person the capability to control the system.
-[[File:scs_status_new.png|center|frame|SCS Status Page]]]
+[[File:scs_status_new.png|center|frame|SCS Status Page]]
 [[File:scs_graphs.png|center|frame|SCS Graphs from Log Files]]
 [[File:scs_logs.png|center|frame|SCS Logs]]

@@ Line 7: / Line 7: @@
 *  Turn System On or Off
 *  Set 'Rainy days' (number of days to skip a scheduled run)
 The extended functionality is the Web GUI*.  The Web interface ('''WI''') not only allows to control SCS, but also view the logs in a graphical way.  For example, '''WI''' can request daily water-times from the SCS and plot a bar-graph to show the user the water history.
@@ Line 12: / Line 13: @@
 <BR/>
 == Features ==
 === Commandline Interface ===

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 Eleven relays were attached to GPIOs of the SJ-One board to switch 28v AC output.  The relays were purchased from Ebay that contained a built-in LED indicator of the relay outputs.  The software simply turned on and off the relays as instructed which in turn would switch on and off sprinklers.
-[[File:scs_hardware_picture.png|center|frame|SCS Hardware]]
+[[File:scs_hardware_picture.jpeg|center|frame|SCS Hardware]]
 <BR/>

← Older revision		Revision as of 23:15, 13 October 2012
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	=== Future Enhancements ===		=== Future Enhancements ===
	Initially, one of the future enhancements was to check weather information and set '''Rainy days''' of SCS automatically, however, after researching how simple this was, it was implemented with ease. To enhance this further, a similar enhancement can include various weather sensors attached to SCS such that it can have even more intelligence of when to water the plants.		Initially, one of the future enhancements was to check weather information and set '''Rainy days''' of SCS automatically, however, after researching how simple this was, it was implemented with ease. To enhance this further, a similar enhancement can include various weather sensors attached to SCS such that it can have even more intelligence of when to water the plants.
		+
		+	=== Source Code ===
		+	You can grab the source code of my deployed project from [https://sourceforge.net/projects/sjonesprnctlr/ SourceForge SCS]

@@ Line 87: / Line 87: @@
 Eleven relays were attached to GPIOs of the SJ-One board to switch 28v AC output.  The relays were purchased from Ebay that contained a built-in LED indicator of the relay outputs.  The software simply turned on and off the relays as instructed which in turn would switch on and off sprinklers.
-TODO: Attach picture and schematic
+[[File:scs_hardware_picture.png|center|frame|SCS Hardware]]
 <BR/>
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 ===== Hints =====
-Note that the '''Hercules''' utility can be used to exchange information with World Weather Online HTTP server.  This can help implement the RN-XV code because the command and response of HTTP can be visually seen.  TODO: Attach picture
+Note that the '''Hercules''' utility can be used to exchange information with World Weather Online HTTP server.  This can help implement the RN-XV code because the command and response of HTTP can be visually seen.
 <BR/>

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 ==== Setup IP & Associate ====
-RN-XV can be commanded through it's UART interface to initialize it.  For this project, WPA2 security is used which is an optional setting.
+RN-XV can be commanded through it's UART interface to initialize it.  For this project, WPA2 security is used which is an optional setting.  '''After each command is sent, the user should wait for the RN-XV's response before issuing further commands.'''
 *  Enter command mode: '''<code>$$$</code>'''
 *  Enable DHCP: '''<code>set ip dhcp 1</code>'''

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 Although being an HTTP client may sound complicated, a simple HTTP client is nothing but a TCP/IP package exchange.  The following steps illustrate how this occurs:
 *  SCS connects to '''www.worldweatheronline.com''' on Port 80.
-*:  Note that port 80 is the standard TCP/IP web-client port.
+*:  Note that port 80 is the standard TCP/IP web-server port.
 *  SCS sends HTTP GET request:
 *:  <pre>GET http://free.worldweatheronline.com/feed/weather.ashx?q=95050&format=csv&num_of_days=2&key=<your api key></pre>

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 #:   Associates RN-XV to Wifi Network
 #:   Monitors disconnect and attempts to reconnect
 #  SCS Task
 #:   Handles servicing relays every minute