YUN SHIELD - Revision history

Admin: /* Upload Sketch Fail */

2015-01-26T07:42:51Z

Upload Sketch Fail

← Older revision		Revision as of 07:42, 26 January 2015
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	Double check chip, or use -F to override this check.		Double check chip, or use -F to override this check.

	Above result shows that Yun Shield ~~try~~ to program the Arduino with mega32u4 mcu type but actaully the Arduino is mega2560 which has signature 0x1e9801. So it fails. So solve this issue, user can choose the mcu/board type to the correct one in the Yun Shield Web Interface --> Sensor --> Arduino Board Type.		Above result shows that Yun Shield tries to program the Arduino with mega32u4 mcu type but actaully the Arduino is mega2560 which has signature 0x1e9801. So it fails. To solve this issue, user can choose the mcu/board type to the correct one in the Yun Shield Web Interface --> Sensor --> Arduino Board Type.


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	Use the GPIO configure commands as above to set high and low, then measure the ISCP headers with mulimeter. We find that the SCK only have 2.9v while the expected is 5v, then cut the L LED from the UNO and the SPI works fine after that.		Use the GPIO configure commands as above to set high and low, then measure the ISCP headers with mulimeter. We find that the SCK only have 2.9v while the expected is 5v, then cut the L LED from the UNO and the SPI works fine after that.


	=where to get=		=where to get=
	[http://www.geeetech.com/yun-shield-p-895.html geeetech store]		[http://www.geeetech.com/yun-shield-p-895.html geeetech store]

Admin: /* Arduino Bridge doesn't work */

2015-01-26T07:39:40Z

Arduino Bridge doesn't work

← Older revision		Revision as of 07:39, 26 January 2015
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	==Arduino Bridge doesn't work==		==Arduino Bridge doesn't work==

	The Bridge use UART interface from AVR, in Arduino Board these trace are always connect to USB to UART chip for sketch upload. It will prevent the bridge to work as expected ~~ini~~ most of time. We have the modification example for official or branded Arduino Board in this link: [Yun_Shield#Connects_to_Arduino_Boards\|Connects_to_Arduino_Boards]. There are still lots of Arduino Variant boards using different hardware. The basic concept is to make the UART as clean as possible. we also provide some working around from our customers for reference as below:		The Bridge use UART interface from AVR, in Arduino Board these trace are always connect to USB to UART chip for sketch upload. It will prevent the bridge to work as expected in most of time. We have the modification example for official or branded Arduino Board in this link: [Yun_Shield#Connects_to_Arduino_Boards\|Connects_to_Arduino_Boards]. There are still lots of Arduino Variant boards using different hardware. The basic concept is to make the UART as clean as possible. we also provide some working around from our customers for reference as below:

	==Upload Sketch Fail==		==Upload Sketch Fail==

Admin: /* Arduino IDE doesn’t detect Yun Shield */

2015-01-26T07:38:13Z

Arduino IDE doesn’t detect Yun Shield

← Older revision		Revision as of 07:38, 26 January 2015
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	*The Arduino IDE version is 1.5.4 or later		*The Arduino IDE version is 1.5.4 or later
	*Your PC and Yun Shield are in the same network.		*Your PC and Yun Shield are in the same network.
	*If Yun Shield boot in advance than Arduino IDE, this may happen. So try to power off/on the Yun Shield and check again.		*If Yun Shield boot is in advance than Arduino IDE, this may happen. So try to power off/on the Yun Shield and check again.

	==Arduino Bridge doesn't work==		==Arduino Bridge doesn't work==

Admin: /* Can not see the Yun Wireless network */

2015-01-26T07:37:19Z

Can not see the Yun Wireless network

← Older revision		Revision as of 07:37, 26 January 2015
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	==Can not see the Yun Wireless network==		==Can not see the Yun Wireless network==

	*~~make~~ sure that the Arduino is powered by power adapter and the input voltage is between 7v ~ 12v		*Make sure that the Arduino is powered by power adapter and the input voltage is between 7v ~ 12v
	*~~make~~ sure the Yun Shield has the antenna connected to its i-pex socket.		*Make sure the Yun Shield has the antenna connected to its i-pex socket.
	*~~make~~ sure the Yun Shield is in AP mode.		*Make sure the Yun Shield is in AP mode.

	==Arduino IDE doesn’t detect Yun Shield==		==Arduino IDE doesn’t detect Yun Shield==

Admin: /* How to Upload, Download or Edit files in Yun Shield */

2015-01-26T07:33:29Z

How to Upload, Download or Edit files in Yun Shield

← Older revision		Revision as of 07:33, 26 January 2015
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	[[File:Yun Shield 21.png]]		[[File:Yun Shield 21.png]]

	The ~~log in~~ process will alter two warning, just ignore it. After ~~log in~~, a management panel will appear. The left part of this panel is your PC’s directories and the right part shows the directories of Yun Shield, you can upload/download files by dragging, or '''double click''' the files to modify its content.		The login process will alter two warning, just ignore it. After login, a management panel will appear. The left part of this panel is your PC’s directories and the right part shows the directories of Yun Shield, you can upload/download files by dragging, or '''double click''' the files to modify its content.

	[[File:500px-Yun Shield 22.png]]		[[File:500px-Yun Shield 22.png]]

Admin: /* What is the difference between the official Arduino Yun and Yun Shield? */

2015-01-26T07:29:04Z

What is the difference between the official Arduino Yun and Yun Shield?

← Older revision		Revision as of 07:29, 26 January 2015
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	==What is the difference between the official Arduino Yun and Yun Shield?==		==What is the difference between the official Arduino Yun and Yun Shield?==

	'''In Hardware Aspect'''		'''In Hardware Aspect'''<br>
	Both Arduino Yun and Yun Shield have the same CPU, Memory size and RAM size for the Linux system. The Arduino Yun is an integrated of Linux Part and MCU part, Yun Shield is designed as a shield which can be used with ~~exist~~ Arduino boards.		Both Arduino Yun and Yun Shield have the same CPU, Memory size and RAM size for the Linux system. The Arduino Yun is an integrated of Linux Part and MCU part, Yun Shield is designed as a shield which can be used with existing Arduino boards.

	Basically, The Yun Shield + Arduino Leonardo equally to an Arduino Yun, but Yun Shield is more flexible because it can be used with other Arduino boards such as Arduino Uno, Duemilanove, Diecimila etc.		Basically, The Yun Shield + Arduino Leonardo equally to an Arduino Yun, but Yun Shield is more flexible because it can be used with other Arduino boards such as Arduino Uno, Duemilanove, Diecimila etc.

	Yun Shield is duplicable and producible: The design of Yun Shield is open and the most ~~complicate~~ and difficult parts are done in the Dragino HE module. User can purchase the Dragino HE module separately to customized their IoT project and release their variant Yun Solution.		Yun Shield is duplicable and producible: The design of Yun Shield is open and the most complicated and difficult parts are done in the Dragino HE module. User can purchase the Dragino HE module separately to customized their IoT project and release their variant Yun Solution.

	Stable and Flexible WiFi performance: Arduino Yun ~~use~~ chip antenna design, if there is a shield on top of the Arduino Yun, the wifi will be greatly shielded and lead to a poor wifi performance. Instead, Yun Shield ~~use~~ external Antenna design, user can connect different type of antennas to the i-pex connector of Yun Shield, this ~~make~~ the installation is more flexible and possible to ~~transfer~~ the signal to several km distance.		Stable and Flexible WiFi performance: Arduino Yun uses chip antenna design, if there is a shield on top of the Arduino Yun, the wifi will be greatly shielded and lead to a poor wifi performance. Instead, Yun Shield uses external Antenna design, user can connect different type of antennas to the i-pex connector of Yun Shield, this makes the installation is more flexible and possible to transmit the signal to several km distance.

	'''In Software Aspect'''		'''In Software Aspect'''
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	Check whether there are ICs connected to the SPI and UART of the AVR and evaluate if they will influence the communication between Yun Shield and the AVR MCU.		Check whether there are ICs connected to the SPI and UART of the AVR and evaluate if they will influence the communication between Yun Shield and the AVR MCU.

	The system structure section well explains the working principle of Yun Shield, if user still not sure if Yun Shield is compatible with their board or having trouble in the compatibility. Then can send the board info to support@dragino.com and our support team will review and check it.		The system structure section well explains the working principle of Yun Shield, if user still not sure if Yun Shield is compatible with their board or having trouble in the compatibility. Then can send the board info to support@dragino.com and our support team will review and check it.

	==How to set up /www/sd and /mnt/sd?==		==How to set up /www/sd and /mnt/sd?==

Admin: /* Connects to Arduino Boards */

2015-01-26T07:24:51Z

Connects to Arduino Boards

← Older revision		Revision as of 07:24, 26 January 2015
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	'''Connect to Arduino Mega2560'''		'''Connect to Arduino Mega2560'''

	1)In Mega2560, the uart connection between mega2560 and mega16u2 will influence the bridge feature with Yun Shield. So we have to disconnect it by ~~set~~ the mega16u2 into reset mode. As below:		1)In Mega2560, the uart connection between mega2560 and mega16u2 will influence the bridge feature with Yun Shield. So we have to disconnect it by setting the mega16u2 into reset mode. As below:

	[[File:Yun Shield with 2560.png]]		[[File:Yun Shield with 2560.png]]

Admin: /* USE WITH ARDUINO BOARDS */

2015-01-26T07:22:38Z

USE WITH ARDUINO BOARDS

← Older revision		Revision as of 07:22, 26 January 2015
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	==USE WITH ARDUINO BOARDS==		==USE WITH ARDUINO BOARDS==

	The Yun Shield ~~use~~ SPI for uploading sketch and use UART port for Bridge class to talk to the AVR. While ~~connects~~ Yun Shield to Arduino Board, below points should be checked:		The Yun Shield uses SPI for uploading sketch and use UART port for Bridge class to talk to the AVR. While connecting Yun Shield to Arduino Board, below points should be checked:

	*Whether the Arduino Board is ~~power~~ by DC jack		*Whether the Arduino Board is powered by DC jack

	*If the board type setting is correct in Yun Shield~~.()~~		*If the board type setting is correct in Yun Shield

	*If the board type setting is correct in Arduino IDE		*If the board type setting is correct in Arduino IDE
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	*Whether the Arduino SPI and UART is not influenced by other hardware		*Whether the Arduino SPI and UART is not influenced by other hardware

	*Make sure the UART mode is in Arduino Bridge.		*Make sure the UART mode is in Arduino Bridge

	==Bridge Library==		==Bridge Library==

Admin: /* Upload Sketch */

2015-01-26T07:20:19Z

Upload Sketch

← Older revision		Revision as of 07:20, 26 January 2015
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	1) In the Arduino IDE, choose the Arduino Yun board type for Leonardo.		1) In the Arduino IDE, choose the Arduino Yun board type for Leonardo.

	2) In Arduino IDE port, choose the ~~correctport~~. (should be ~~ArduinoYun~~ port with an ip address)		2) In Arduino IDE port, choose the correct port. (should be Arduino Yun port with an IP address)

	3) In the Yun Shield GUI Sensor page, choose the Board Type: Leonardo.		3) In the Yun Shield GUI Sensor page, choose the Board Type: Leonardo.

			4) Compile the sketch and upload it to the Arduino Board. During upload, The Yun Shield will ask you to key in the password, by default, the password is ''dragino''.
	4) Compile the sketch and upload it to the Arduino Board. During upload, The Yun Shield will ask you to key in the password, by default, the ~~passwordis~~ ''dragino''.

	[[File:Yun shield 5.jpg]]		[[File:Yun shield 5.jpg]]

Admin: /* Detect Yun Shield */

2015-01-26T07:19:09Z

Detect Yun Shield

← Older revision		Revision as of 07:19, 26 January 2015
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	==Detect Yun Shield==		==Detect Yun Shield==
	Assume your laptop and Yun Shield are in the same network. The Yun ~~Shieldwill broadcastdata~~ in ~~thisnetworkand~~ Arduino IDE will receive this data and show the Yun Shield in Tools>Port.		Assume your laptop and Yun Shield are in the same network. The Yun Shield will broadcast data in this network and Arduino IDE will receive this data and show the Yun Shield in Tools>Port.

	[[File:Yun shield 4.jpg]]		[[File:Yun shield 4.jpg]]