Arduino Yun Mini - Revision history

Admin: /* Physical Characteristics */

2016-01-29T02:53:27Z

Physical Characteristics

← Older revision		Revision as of 02:53, 29 January 2016
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	=Physical Characteristics=		=Physical Characteristics=
	[[File:Arduino yun mini dimensions.jpg]]		[[File:Arduino yun mini dimensions.jpg]]

	The maximum length and width of the Yún Mini PCB are 71.12 mm and 22.86 mm respectively. Weight of the board is 16 g.		The maximum length and width of the Yún Mini PCB are 71.12 mm and 22.86 mm respectively. Weight of the board is 16 g.

Admin: /* Input and Output */

2016-01-29T02:53:07Z

Input and Output

Admin: /* Power */

2016-01-29T02:51:59Z

Power

← Older revision		Revision as of 02:51, 29 January 2016
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	The power pins are as follows:		The power pins are as follows:

	*VIN. The input voltage to the Arduino board. Unlike other Arduino boards, if you are going to provide power to the board through this pin, you must provide a regulated 5V.		*'''VIN'''. The input voltage to the Arduino board. Unlike other Arduino boards, if you are going to provide power to the board through this pin, you must provide a regulated 5V.

	*5V. The power supply used to power the microcontrollers and other components on the board. This can come either from VIN or be supplied by USB.		*'''5V'''. The power supply used to power the microcontrollers and other components on the board. This can come either from VIN or be supplied by USB.
	3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.		3V3. A 3.3 volt supply generated by the on-board regulator. Maximum current draw is 50 mA.

	*GND. Ground pins.		*'''GND'''. Ground pins.

	*IOREF. The voltage at which the i/o pins of the board are operating (i.e. VCC for the board). This is 5V on the Yún.		*'''IOREF'''. The voltage at which the i/o pins of the board are operating (i.e. VCC for the board). This is 5V on the Yún.

	*VCC_GT. A 2.1 volt supply generated by the on-board regulator (designed to dogRJ45)		*'''VCC_GT. A''' 2.1 volt supply generated by the on-board regulator (designed to dogRJ45)

	=Memory=		=Memory=

Admin: /* Add ons */

2016-01-29T02:51:19Z

Add ons

← Older revision		Revision as of 02:51, 29 January 2016
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	'''dogRJ45'''		'''dogRJ45'''

	IEEE 802.3 fast ethernet switch		IEEE 802.3 fast ethernet switch

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	'''dogUSB'''		'''dogUSB'''

	USB A type connector with USB 2.0 hub		USB A type connector with USB 2.0 hub

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	'''dog eMMC'''		'''dog eMMC'''

	4 GB Flash		4 GB Flash

Admin: /* Schematic & Reference Design */

2016-01-29T02:51:05Z

Schematic & Reference Design

← Older revision		Revision as of 02:51, 29 January 2016
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	Schematic:[http://download.arduino.org/products/YUNMINI/Arduino-yun-mini-schematics.pdf arduino-yun-mini-schematic.pdf]		Schematic:[http://download.arduino.org/products/YUNMINI/Arduino-yun-mini-schematics.pdf arduino-yun-mini-schematic.pdf]

	Schematic DogUSB:[http://download.arduino.org/products/YUNMINI/DOGUSB-Arduino-yun-mini-schematics.pdf DOGUSB-Arduino-yun-mini-schematics.pdf]		Schematic DogUSB:[http://download.arduino.org/products/YUNMINI/DOGUSB-Arduino-yun-mini-schematics.pdf DOGUSB-Arduino-yun-mini-schematics.pdf]

	Schematic DogRJ45:[http://download.arduino.org/products/YUNMINI/DOGRJ45-Arduino-yun-mini-schematics.pdf DOGRJ45-Arduino-yun-mini-schematics.pdf]		Schematic DogRJ45:[http://download.arduino.org/products/YUNMINI/DOGRJ45-Arduino-yun-mini-schematics.pdf DOGRJ45-Arduino-yun-mini-schematics.pdf]

Admin: /* Summary */

2016-01-29T02:50:53Z

Summary

Show changes

Admin: /* Summary */

2016-01-29T02:35:07Z

Summary

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 =Summary=
 AVR Microcontroller
+'''AVR Microcontroller'''
-{|border="1" cellspacing="0"
+  {|border="1" cellspacing="0"
 |-
 |Microcontroller ||| ATmega32u4
@@ Line 36: / Line 36: @@
 |-
 | Clock Speed ||| 16 MHz
 |}

Admin: /* Summary */

2016-01-29T02:30:19Z

Summary

← Older revision		Revision as of 02:30, 29 January 2016
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	=Summary=		=Summary=
	Microcontroller ATmega32u4		AVR Microcontroller

			{\|border="1" cellspacing="0"
			\|-
			\|Microcontroller \|\|\| ATmega32u4
			\|-
			\| Operating Voltage \|\|\| 5V
			\|-
			\| Input Voltage \|\|\| 5V
			\|-
			\| Digital I/O Pins \|\|\| 20
			\|-
			\| PWM Channels \|\|\| 7
			\|-
			\| Analog Input Channels \|\|\| 12
			\|-
			\| DC Current per I/O Pin \|\|\| 40 mA
			\|-
			\| DC Current for 3.3V Pin \|\|\| 50 mA
			\|-
			\| Flash Memory \|\|\| 32 KB
			\|-
			\| SRAM \|\|\| 2.5 KB
			\|-
			\| EEPROM \|\|\| 1 KB
			\|-
			\| Clock Speed \|\|\| 16 MHz
			\|}

Admin: Created page with "=Overview= Arduino Yun Mini is a breadboard PCB developed with ATmega 32u4 MCU and QCA MIPS 24K SoC CPU operating up to 400 MHz. Qualcomm Atheros CPU supports a Linux distribu..."

2016-01-29T02:26:41Z

Created page with "=Overview= Arduino Yun Mini is a breadboard PCB developed with ATmega 32u4 MCU and QCA MIPS 24K SoC CPU operating up to 400 MHz. Qualcomm Atheros CPU supports a Linux distribu..."

New page

=Overview=
Arduino Yun Mini is a breadboard PCB developed with ATmega 32u4 MCU and QCA MIPS 24K SoC CPU operating up to 400 MHz. Qualcomm Atheros CPU supports a Linux distribution based on OpenWRT named Linino. The board has built- in WiFi ( IEEE 802.11b/g/n operations up to 150Mbps 1x1 2.4 GHz ) supports 20 digital input/output pins (of which 7 can be used as PWM outputs and 12 as analog inputs), a 16 MHz crystal oscillator, a micro USB connector, an ICSP header, two reset buttons and one user button.

The Arduino Yún Mini is similar to the Leonardo in that the ATmega32u4 has built-in USB communication, eliminating the need for a secondary processor. This allows the Arduino Yún Mini to appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC) serial / COM port.

[[File:ATmega32u4 arduino yun.jpg]]

The Bridge library facilitates communication between the two processors, giving Arduino sketches the ability to run shell scripts, communicate with network interfaces, and receive information from the AR9331 processor. The USB host, network interfaces and SD card are not connected to the 32U4, but the AR9331, and the Bridge library also enables the Arduino to interface with those peripherals.

=Summary=
Microcontroller ATmega32u4

← Older revision		Revision as of 02:53, 29 January 2016
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	In addition, some pins have specialized functions:		In addition, some pins have specialized functions:

	*USB: USB , USB- Used to connect USB MIPS with external USB devices. We suggest to use the Add on: dogUSB or dog eMMC.		*'''USB''': USB , USB- Used to connect USB MIPS with external USB devices. We suggest to use the Add on: dogUSB or dog eMMC.
	*GPIO: AR_GP7, AR_GP6 These are general purpose input output commanded through the the LininoOS distribution. They operate at 5 volts.		*'''GPIO''': AR_GP7, AR_GP6 These are general purpose input output commanded through the the LininoOS distribution. They operate at 5 volts.
	*Ethernet port: RD , RD-, TD , TD- Used to connect the MIPS Ethernet PHY with the dogRJ45 in order to give the user an Ethernet interface.		*'''Ethernet port''': RD , RD-, TD , TD- Used to connect the MIPS Ethernet PHY with the dogRJ45 in order to give the user an Ethernet interface.

	'''AVR 32u4 pins:'''		'''AVR 32u4 pins:'''
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	Each of the 20 digital i/o pins on the Yún Mini can be used as an input or output, using the pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:		Each of the 20 digital i/o pins on the Yún Mini can be used as an input or output, using the pinMode(), digitalWrite(), and digitalRead() functions. They operate at 5 volts. Each pin can provide or receive a maximum of 40 mA and has an internal pull-up resistor (disconnected by default) of 20-50 kOhms. In addition, some pins have specialized functions:

	*Serial: 0->RX and 1Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Note that on the Yún Mini, the Serial class refers to USB (CDC) communication; for TTL serial on pins 0 and 1, use the Serial1 class. The hardware serials of the ATmega32U4 and the AR9331 on the Yún Mini are connected together and are used to communicate between the two processors. As it is common in Linux systems, the console to access the system is exposed on the serial port of the AR9331. This means that you can access to the programs and tools offered by Linux from your sketch.		*'''Serial''': 0->RX and 1Used to receive (RX) and transmit (TX) TTL serial data using the ATmega32U4 hardware serial capability. Note that on the Yún Mini, the Serial class refers to USB (CDC) communication; for TTL serial on pins 0 and 1, use the Serial1 class. The hardware serials of the ATmega32U4 and the AR9331 on the Yún Mini are connected together and are used to communicate between the two processors. As it is common in Linux systems, the console to access the system is exposed on the serial port of the AR9331. This means that you can access to the programs and tools offered by Linux from your sketch.

	*TWI: 2 (SDA) and 3 (SCL). Support TWI communication using the Wire library. External Interrupts: 3 (interrupt 0), 2 (interrupt 1), 0 (interrupt 2), 1 (interrupt 3) and 7 (interrupt 4). These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details. It is not recommended to use pins 0 and 1 as interrupts because they also are the hardware serial port used to talk with the Linux processor. Pin 7 is connected to the AR9331 processor and it may be used as handshake signal in future. Is recommended to be careful of possible conflicts if you intend to use it as interrupt.		*'''TWI''': 2 (SDA) and 3 (SCL). Support TWI communication using the Wire library. External Interrupts: 3 (interrupt 0), 2 (interrupt 1), 0 (interrupt 2), 1 (interrupt 3) and 7 (interrupt 4). These pins can be configured to trigger an interrupt on a low value, a rising or falling edge, or a change in value. See the attachInterrupt() function for details. It is not recommended to use pins 0 and 1 as interrupts because they also are the hardware serial port used to talk with the Linux processor. Pin 7 is connected to the AR9331 processor and it may be used as handshake signal in future. Is recommended to be careful of possible conflicts if you intend to use it as interrupt.

	*PWM: 3, 5, 6, 9, 10 and 11. Provide 8-bit PWM output with the analogWrite() function.		*'''PWM''': 3, 5, 6, 9, 10 and 11. Provide 8-bit PWM output with the analogWrite() function.
	SPI: MISO, SCK, MOSI, RXLED/SS. These pins support SPI communication using the SPI library. Note that the SPI pins are not connected to any of the digital I/O pins as they are on the Uno. The SPI pins are also connected to the AR9331 gpio pins, where it has been implemented in software the SPI interface. This means that the ATMega32u4 and the AR9331 can also communicate using the SPI protocol.		SPI: MISO, SCK, MOSI, RXLED/SS. These pins support SPI communication using the SPI library. Note that the SPI pins are not connected to any of the digital I/O pins as they are on the Uno. The SPI pins are also connected to the AR9331 gpio pins, where it has been implemented in software the SPI interface. This means that the ATMega32u4 and the AR9331 can also communicate using the SPI protocol.

	*LED: L13 (pin 13). There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There are several other status LEDs on the Yún Mini, indicating power, WLAN connection, ETH connection, and USER functions.		*'''LED''': L13 (pin 13). There is a built-in LED connected to digital pin 13. When the pin is HIGH value, the LED is on, when the pin is LOW, it's off. There are several other status LEDs on the Yún Mini, indicating power, WLAN connection, ETH connection, and USER functions.
	Analog Inputs: A0 - A5, A6 - A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Yún Mini has 12 analog inputs, labeled A0 through A11, all of which can also be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each analog input provide 10 bits of resolution (i.e. 1024 different values). By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and the analogReference() function.		Analog Inputs: A0 - A5, A6 - A11 (on digital pins 4, 6, 8, 9, 10, and 12). The Yún Mini has 12 analog inputs, labeled A0 through A11, all of which can also be used as digital i/o. Pins A0-A5 appear in the same locations as on the Uno; inputs A6-A11 are on digital i/o pins 4, 6, 8, 9, 10, and 12 respectively. Each analog input provide 10 bits of resolution (i.e. 1024 different values). By default the analog inputs measure from ground to 5 volts, though is it possible to change the upper end of their range using the AREF pin and the analogReference() function.

	*AREF. Reference voltage for the analog inputs. Used with analogReference().		*'''AREF'''. Reference voltage for the analog inputs. Used with analogReference().


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	[[File:Arduino yun mini diagram back.jpg]]		[[File:Arduino yun mini diagram back.jpg]]

	*Yún Mini RST. Bring this line LOW to reset the AR9331 microprocessor. Resetting the AR9331 will cause the reboot of the linux system. All the data stored in RAM will be lost and all the programs that are running will be terminated.		*'''Yún Mini RST'''. Bring this line LOW to reset the AR9331 microprocessor. Resetting the AR9331 will cause the reboot of the linux system. All the data stored in RAM will be lost and all the programs that are running will be terminated.

	*32U4 RST. Bring this line LOW to reset the ATmega32U4 microcontroller. Typically used to add a reset button to shields which block the one on the board.		*'''32U4 RST'''. Bring this line LOW to reset the ATmega32U4 microcontroller. Typically used to add a reset button to shields which block the one on the board.

	*WLAN RST. This button has a double feature. Primarly serves to restore the WiFi to the factory configuration. The factory configuration consist to put the WiFi of the Yún Mini in access point mode (AP) and assign to it the default IP address that is 192.168.240.1, in this condition you can connect with your computer to the a WiFi network that appear with the SSID name "Linino-XXXXXXXXXXXX", where the twelve 'X' are the MAC address of your Yún Mini. Once connected you can reach the web panel of the Yún Mini with a browser at the 192.168.240.1 or "http://linino.local" address. Note that restoring the WiFi configuration will cause the reboot of the linux environment. To restore your WiFi configuration you have to press and hold the WLAN RST button for 5 seconds. When you press the button the WLAN blue LED will start to blink and will keep still blinking when you release the button after 5 seconds indicating that the WiFi restore procedure has been recorded. The second function of the WLAN RST button is to restore the linux image to the default factory image. To restore the linux environment you must press the button for 30 seconds. Note that restoring the factory image make you lose all the files saved and softwares installed on the on-board flash memory connected to the AR9331.		*'''WLAN RST'''. This button has a double feature. Primarly serves to restore the WiFi to the factory configuration. The factory configuration consist to put the WiFi of the Yún Mini in access point mode (AP) and assign to it the default IP address that is 192.168.240.1, in this condition you can connect with your computer to the a WiFi network that appear with the SSID name "Linino-XXXXXXXXXXXX", where the twelve 'X' are the MAC address of your Yún Mini. Once connected you can reach the web panel of the Yún Mini with a browser at the 192.168.240.1 or "http://linino.local" address. Note that restoring the WiFi configuration will cause the reboot of the linux environment. To restore your WiFi configuration you have to press and hold the WLAN RST button for 5 seconds. When you press the button the WLAN blue LED will start to blink and will keep still blinking when you release the button after 5 seconds indicating that the WiFi restore procedure has been recorded. The second function of the WLAN RST button is to restore the linux image to the default factory image. To restore the linux environment you must press the button for 30 seconds. Note that restoring the factory image make you lose all the files saved and softwares installed on the on-board flash memory connected to the AR9331.

	=Communication=		=Communication=