Main.ArduinoBoardEsplora History

Hide minor edits - Show changes to output

August 19, 2014, at 10:32 AM by Alice Pintus -
Changed lines 30-31 from:
preceding Arduino boards in that it provides a number of built-in, ready-to-use setof onboard sensors for interaction. It's designed for people who want to get up and running with Arduino without having to learn about the electronics first. For a step-by-step introduction to the Esplora, check out the [[Guide/ArduinoEsplora | Getting Started with Esplora]] guide.
to:
preceding Arduino boards in that it provides a number of built-in, ready-to-use set of onboard sensors for interaction. It's designed for people who want to get up and running with Arduino without having to learn about the electronics first. For a step-by-step introduction to the Esplora, check out the [[Guide/ArduinoEsplora | Getting Started with Esplora]] guide.
April 29, 2013, at 04:09 PM by Alberto Cicchi -
Changed line 22 from:
(:cell:)[[Main/BuyEsplora | Attach:buttonDistributors.jpg ]]
to:
(:cell:)[[Main/Buy | Attach:buttonDistributors.jpg ]]
April 29, 2013, at 04:06 PM by Alberto Cicchi -
Changed line 22 from:
(:cell:)[[http://arduino.cc/en/Main/BuyEsplora | Attach:buttonDistributors.jpg ]]
to:
(:cell:)[[Main/BuyEsplora | Attach:buttonDistributors.jpg ]]
April 29, 2013, at 04:05 PM by Alberto Cicchi -
Changed lines 19-25 from:
[[Main/BuyEsplora | Attach:buttonDistributors.jpg]]
to:

(:table border = 0 :)
(:cell:) [[http://store.arduino.cc/it/index.php?main_page=product_info&cPath=11_12&products_id=250 | Attach:buttonStore.jpg ]]
(:cell:)[[http://arduino.cc/en/Main/BuyEsplora | Attach:buttonDistributors.jpg ]]
(:tableend:)

January 21, 2013, at 12:36 PM by Roberto Guido - added comments box on bottom
Changed lines 120-122 from:
The maximum length and width of the Esplora PCB are 6.5 and 2.4 inches respectively, with the USB and TinkerKit connectors extending beyond the latter dimension. Four screw holes allow the board to be attached to a surface or case.
to:
The maximum length and width of the Esplora PCB are 6.5 and 2.4 inches respectively, with the USB and TinkerKit connectors extending beyond the latter dimension. Four screw holes allow the board to be attached to a surface or case.

(:div id='commentsbox':)
December 23, 2012, at 04:23 PM by Tom Igoe -
Changed lines 24-27 from:
preceding boards in that it provides a number of built-in, ready-to-use setof onboard sensors for interaction.

The Esplora has onboard sound and light output interfaces. It alos has the potential to expand its capabilities with two Tinkerkit input and output connectors, and a socket for a color TFT LCD screen.
to:
preceding Arduino boards in that it provides a number of built-in, ready-to-use setof onboard sensors for interaction. It's designed for people who want to get up and running with Arduino without having to learn about the electronics first. For a step-by-step introduction to the Esplora, check out the [[Guide/ArduinoEsplora | Getting Started with Esplora]] guide.

The Esplora has onboard sound and light outputs, and several input sensors, including a joystick, a slider, a temperature sensor, an accelerometer, a microphone, and a light sensor. It also has the potential to expand its capabilities with two Tinkerkit input and output connectors, and a socket for a color TFT LCD screen.
December 10, 2012, at 04:27 PM by Federico -
Added line 12:
(:if false:)
Deleted line 13:
(:if false:)
Deleted line 14:
(:ifend:)
Changed lines 17-19 from:
to:
(:ifend:)

[[Main/BuyEsplora | Attach:buttonDistributors.jpg]]
December 10, 2012, at 03:41 PM by Federico -
Added line 13:
(:if false:)
Added line 15:
(:ifend:)
December 10, 2012, at 03:39 PM by Federico -
Changed line 103 from:
Visit the [[Reference/EsploraLibrary | Esplora reference]] page to see the complete documentation of the library and examples.
to:
Visit the [[Reference/EsploraLibrary | Esplora library]] reference page to see the complete documentation of the library and examples.
December 07, 2012, at 04:59 PM by Scott Fitzgerald -
Changed lines 37-38 from:
these are detailed on the getting started page.
to:
these are detailed on the [[Guide/ArduinoEsplora | getting started page]].
Changed lines 91-92 from:
The Esplora can be programmed with the Arduino software (download). Select "Arduino Esplora" from the Tools > Board menu. For details, see the [[Guide/Esplora | getting started page]].
to:
The Esplora can be programmed with the Arduino software (download). Select "Arduino Esplora" from the Tools > Board menu. For details, see the [[Guide/ArduinoEsplora | getting started page]].
December 07, 2012, at 04:56 PM by Scott Fitzgerald -
Changed lines 21-26 from:
preceding boards because it provides a built-in, ready-to-use set of onboard
sensors, targeted for user interaction.

It also has an onboard sound and light output interfaces and the possibility to exapand the capabilities with two inputs and two output connectors and a socket for a color TFT lcd screen.
Like the Leonardo board the Esplora use an Atmega32U4 AVR microcontroller with 16 MHz crystal oscillator and a micro USB connection capable to act as a USB client device such as a mouse or a keyboard.
In the upper left corner of the board there is the reset push-button, that you can use to restart the board and four leds labelled as:
to:
preceding boards in that it provides a number of built-in, ready-to-use setof onboard sensors for interaction.

The Esplora has onboard sound and light output interfaces. It alos has the potential to expand its capabilities with two Tinkerkit input and output connectors, and a socket for a color TFT LCD screen.

Like the Leonardo board, the Esplora uses an Atmega32U4 AVR microcontroller with 16 MHz crystal oscillator and a micro USB connection capable of acting as a USB client device, like a mouse or a keyboard.

In the upper left corner of the board there is a reset pushbutton, that you can use to restart the board. There are four status LEDS :
Changed lines 30-32 from:
* L [green] used defined led connected directrly to the microcontroller accessible as pin number 13
* RX and TX [yellow] indicates the status of the USB communication
to:
* L [yellow] connected directly to the microcontroller, accessible through pin 13
* RX and TX [yellow] indicates the data being transmitted or received over the USB communication
Changed lines 35-36 from:
The Esplora has built-in USB communication, therefore it can appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC)
serial / COM port. It also has other implications for the behavior of the board;
to:
The Esplora has built-in USB communication; it can appear to a connected computer as a mouse or keyboard, in addition to a virtual (CDC)
serial / COM port. This has other implications for the behavior of the board;
Deleted line 38:
Changed lines 62-80 from:
The design of the Esplora board recalls the old school gamepad design with analog joystick to hold in the left hand and four pushbuttons to hold with the right hand.
In facts it is a fully programmable Arduino board equipped with the following devices:

* '''Analog joystick with central push-button''' positioned on the left side, it has two axis (X and Y) and push-button readings.
* '''4 push-buttons''' laid out like a romboid.
* '''Linear potentiometer''' as a throttle-like control.
* '''Microphone''' for getting the environment's audio level.
* '''Light sensor''' for getting the environment's lighting condition.
* '''Temperature sensor'''.
* '''Three-axis accelerometer'''.
* '''Buzzer''' with square-wave sound capabilities.
* '''RGB led''' super bright.
* '''2 TinkerKit Inputs''' to connect the TinkerKit sensors modules with the 3-pin connectors.
* '''2 TinkerKit Outputs''' to connect the TinkerKit actuators modules with the 3-pin connectors.
* '''TFT display connector''' in a connector for an optional color LCD screen, an SD card or other devices using this protocol.

In order to cope with the number of available inputs, the board uses an analog multiplexer so that a single analog input of the microcontroller is shared
among all the input channels (except the 3-axis accelerometer). Four additional microcontroller pins allow to choose which channel to read.
to:
The design of the Esplora board recalls traditional gamepad design with an analog joystick on the left and four pushbuttons on the right.

The Esplora has the following on-board inputs and outputs :

* '''Analog joystick with central push-button''' two axis (X and Y) and a center pushbutton.
* '''4 push-buttons''' laid out in a diamond pattern.
* '''Linear potentiometer''' slider near the bottom of the board.
* '''Microphone''' for getting the loudness (amplitude) of the surrounding environment.
* '''Light sensor''' for getting the brightness.
* '''Temperature sensor''' reads the ambient temperature
* '''Three-axis accelerometer''' measures the board's relation to gravity on three axes (X, Y, and Z)
* '''Buzzer''' can produce square-waves.
* '''RGB led''' bright LED with Red Green and Blue elements for color mixing.
* '''2 TinkerKit Inputs''' to connect the TinkerKit sensor modules with the 3-pin connectors.
* '''2 TinkerKit Outputs''' to connect the TinkerKit actuator modules with the 3-pin connectors.
* '''TFT display connector''' connector for an optional color LCD screen, SD card, or other devices that use the SPI protocol.

In order to utilize the total number of available sensors, the board uses an analog multiplexer. This means a single analog input of the microcontroller is shared among all the input channels (except the 3-axis accelerometer). Four additional microcontroller pins choose which channel to read.
Changed lines 83-86 from:
As the Leonardo the Esplora has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega32U4 provides serial (CDC) communication over USB and appears as a virtual com port to software on the computer. The chip also acts as a full speed USB 2.0 device, using standard USB COM drivers. On Windows, a .inf file is required. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the board will flash when data is being transmitted via the USB connection to the computer.
The ATmega32U4 also supports SPI communication, that can be used through the SPI library.
The Esplora appears as a generic keyboard and mouse, and can be programmed to control these input devices using the Keyboard and Mouse classes.
to:
The Leonardo the Esplora has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega32U4 provides serial (CDC) communication over USB and appears as a virtual com port to software on the computer. The chip also acts as a full speed USB 2.0 device, using standard USB COM drivers. On Windows, a .inf file is required. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the board will flash when data is being transmitted via the USB connection to the computer.

The ATmega32U4 also supports SPI communication, that can be accessed through the SPI library.

The Esplora can appear as a generic keyboard and mouse, and can be programmed to control these input devices using the [[/Reference/MouseKeyboard | Keyboard and Mouse]] libraries.
Changed lines 91-92 from:
The Esplora can be programmed with the Arduino software (download). Select "Arduino Esplora" from the Tools > Board menu. For details, see the reference and tutorials.
to:
The Esplora can be programmed with the Arduino software (download). Select "Arduino Esplora" from the Tools > Board menu. For details, see the [[Guide/Esplora | getting started page]].
Changed lines 94-95 from:
You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header; see these instructions for details.
to:

You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header; see [[/Hacking/Programmer | these instructions]] for details.
Changed lines 99-101 from:
To facilitate the sketch writing the Esplora comes with a library that contains a dedicated family of instructionts to read all the sensors and write on all the ouputs that the boards provide.
The library offers low level methods that just ouputs the raw data read from the sensors or write to the actuators, and also high level methods which provides ready processed data, like for example getting the temperature in Fahrenheit or Celsius degrees or writing directly the colour to the RGB led.
Visit the [[Reference/EsploraLibrary | Esplora reference]] page to see the complete documentation of the library and the examples.
to:
To facilitate writing sketches for the Esplora, there is a dedicated library that contains methods for reading the sensors and writing to the outputs on-board.

The library offers high level methods which provide pre-processed data, like degrees Fahrenheit or Celsius from the temperature sensor. It also enables easy access to the outputs, like writing values to the RGB LED.

Visit the [[Reference/EsploraLibrary | Esplora reference]] page to see the complete documentation of the library and examples.
Added line 108:
December 07, 2012, at 12:39 PM by Federico -
Changed line 96 from:
Visit the [[Reference]] page to see the complete documentation of the library and the examples.
to:
Visit the [[Reference/EsploraLibrary | Esplora reference]] page to see the complete documentation of the library and the examples.
December 06, 2012, at 12:56 PM by Federico -
Changed lines 50-52 from:
EAGLE files: arduino-esplora-reference-design.zip\\
Schematic: arduino-esplora-schematic-rev3b.pdf
to:
EAGLE files: Attach:arduino-esplora-reference-design.zip\\
Schematic: Attach:arduino-esplora-schematic.pdf
December 05, 2012, at 07:17 PM by Federico -
Changed lines 5-6 from:
(:cellnr colspan=2:)%width=450px%[[Attach:ArduinoEsploraFront.jpg | Attach:ArduinoEsploraFront.jpg ]]
(:cell colspan=2:)%width=450px%[[Attach:ArduinoEsploraBack450.jpg | Attach:ArduinoEsploraBack450.jpg ]]
to:
(:cellnr colspan=2:)%width=450px%[[http://farm9.staticflickr.com/8044/8134573901_63952a4f17_b.jpg | http://farm9.staticflickr.com/8044/8134573901_63952a4f17.jpg ]]
(:cell colspan=2:)%width=450px%[[http://farm9.staticflickr.com/8471/8134600572_35b9d2e416_b.jpg | http://farm9.staticflickr.com/8471/8134600572_35b9d2e416.jpg ]]
December 05, 2012, at 05:19 PM by Katia De Coi -
Changed lines 3-7 from:
(:table border=0 :)
(:cell:)%centre%[[Attach:ArduinoEsploraFront.jpg | Attach:ArduinoEsploraFront.jpg ]]
(:cellnr:)%centre%[[Attach:ArduinoEsploraBack450.jpg | Attach:ArduinoEsploraBack450.jpg ]]
(:cellnr:)''Arduino Esplora Front''
(:cellnr:)''Arduino Esplora Rear''
to:
(:table border=0 align=center:)

(:cellnr colspan=2:)%width=450px%[[Attach:ArduinoEsploraFront.jpg | Attach:ArduinoEsploraFront.jpg ]]
(:cell colspan=2:)%width=450px%[[Attach:ArduinoEsploraBack450.jpg | Attach:ArduinoEsploraBack450.jpg ]]
(:cellnr colspan=2:) ''Arduino Esplora Front''
(:cell colspan=2:) ''Arduino Esplora Rear''
Changed line 13 from:
(:cell:) [[http://store.arduino.cc/| Attach:buttonStore.jpg ]]
to:
(:cell:) [[http://store.arduino.cc/it/index.php?main_page=product_info&cPath=11_12&products_id=250 | Attach:buttonStore.jpg ]]
Changed lines 17-18 from:
!!Overview
to:
!!!Overview
December 05, 2012, at 05:11 PM by Katia De Coi -
Changed line 5 from:
(:cellnr:)%centre%[[Attach:ArduinoEsploraBack.jpg | Attach:ArduinoEsploraBack.jpg ]]
to:
(:cellnr:)%centre%[[Attach:ArduinoEsploraBack450.jpg | Attach:ArduinoEsploraBack450.jpg ]]
December 05, 2012, at 05:07 PM by Katia De Coi -
December 05, 2012, at 05:05 PM by Katia De Coi -
Changed lines 51-52 from:
http://farm9.staticflickr.com/8069/8209014766_29799e2db6_o.jpg
to:
http://farm9.staticflickr.com/8069/8209014766_1b5a58e3c2_c.jpg
November 29, 2012, at 01:04 PM by Federico -
Changed line 19 from:
preceding boards in that it provides a built-in, ready-to-use set of onboard
to:
preceding boards because it provides a built-in, ready-to-use set of onboard
Changed lines 22-26 from:
Like the Leonardo it has a 16 MHz crystal oscillator, a micro USB connection,
an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable to get started.

The Esplora has built-in USB communication, therefore it can appear to a
connected computer as a mouse and keyboard, in addition to a virtual (CDC)
to:
It also has an onboard sound and light output interfaces and the possibility to exapand the capabilities with two inputs and two output connectors and a socket for a color TFT lcd screen.
Like the Leonardo board the Esplora use an Atmega32U4 AVR microcontroller with 16 MHz crystal oscillator and a micro USB connection capable to act as a USB client device such as a mouse or a keyboard.
In the upper left corner of the board there is the reset push-button, that you can use to restart the board and four leds labelled as:
* ON [green] indicates whether the board is receiving power supply
* L [green] used defined led connected directrly to the microcontroller accessible as pin number 13
* RX and TX [yellow] indicates the status of the USB communication

The board contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable to get started.

The Esplora has built-in USB communication, therefore it can appear to a connected computer as a mouse and keyboard, in addition to a virtual (CDC)
Changed lines 41-43 from:
||Flash Memory ||256 KB of which 8 KB used by bootloader ||
||SRAM ||8 KB ||
||EEPROM ||4 KB ||
to:
||Flash Memory ||32 KB of which 4 KB used by bootloader ||
||SRAM ||2.5 KB ||
||EEPROM ||1 KB ||
Changed lines 59-63 from:
The Esplora board can be held like a gamepad and is equipped with the following
devices:

* '''Analog joystick with push button''' on the left side, with X/Y and push button readings.
* '''4 push buttons''' laid out like a romboid.
to:
The design of the Esplora board recalls the old school gamepad design with analog joystick to hold in the left hand and four pushbuttons to hold with the right hand.
In facts it is a fully programmable Arduino board equipped with the following devices:

* '''Analog joystick with central push-button''' positioned on the left side, it has two axis (X and Y) and push-button readings.
* '''4 push-buttons''' laid out like a romboid.
Changed lines 70-76 from:
* '''RGB led'''
* '''2 digital I/O pins''' available through TinkerKit 3-pin connectors, that can be used either as digital input or outputs.
* '''2 analog inputs''' available through TinkerKit 3-pin connectors.
* '''SPI/TWI''' in a connector for an optional color LCD screen, an SD card or other devices using this protocol.

In order to cope with the number of available inputs, the board uses an analog
multiplexer so that a single analog input of the microcontroller is shared
to:
* '''RGB led''' super bright.
* '''2 TinkerKit Inputs''' to connect the TinkerKit sensors modules with the 3-pin connectors.
* '''2 TinkerKit Outputs''' to connect the TinkerKit actuators modules with the 3-pin connectors.
* '''TFT display connector''' in a connector for an optional color LCD screen, an SD card or other devices using this protocol.

In order to cope with the number of available inputs, the board uses an analog multiplexer so that a single analog input of the microcontroller is shared
Added lines 90-95:
!!!Esplora Library

To facilitate the sketch writing the Esplora comes with a library that contains a dedicated family of instructionts to read all the sensors and write on all the ouputs that the boards provide.
The library offers low level methods that just ouputs the raw data read from the sensors or write to the actuators, and also high level methods which provides ready processed data, like for example getting the temperature in Fahrenheit or Celsius degrees or writing directly the colour to the RGB led.
Visit the [[Reference]] page to see the complete documentation of the library and the examples.
Changed lines 103-104 from:
The Leonardo has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed.
to:
The Esplora has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed.
November 22, 2012, at 04:53 PM by Katia De Coi -
Added lines 46-47:
http://farm9.staticflickr.com/8069/8209014766_29799e2db6_o.jpg
Changed line 97 from:
The maximum length and width of the Esplora PCB are 6.5 and 2.4 inches respectively, with the USB and TinkerKit connectors extending beyond the latter dimension. Four screw holes allow the board to be attached to a surface or case.
to:
The maximum length and width of the Esplora PCB are 6.5 and 2.4 inches respectively, with the USB and TinkerKit connectors extending beyond the latter dimension. Four screw holes allow the board to be attached to a surface or case.
November 02, 2012, at 10:30 PM by Davide Gomba -
Added lines 1-95:
!!Arduino Esplora

(:table border=0 :)
(:cell:)%centre%[[Attach:ArduinoEsploraFront.jpg | Attach:ArduinoEsploraFront.jpg ]]
(:cellnr:)%centre%[[Attach:ArduinoEsploraBack.jpg | Attach:ArduinoEsploraBack.jpg ]]
(:cellnr:)''Arduino Esplora Front''
(:cellnr:)''Arduino Esplora Rear''
(:tableend:)

(:table border = 0 :)
(:cell:) [[http://store.arduino.cc/| Attach:buttonStore.jpg ]]
(:cell:)[[http://arduino.cc/en/Main/Buy | Attach:buttonDistributors.jpg ]]
(:tableend:)

!!Overview

The Arduino Esplora is a microcontroller board derived from the
[[Guide/ArduinoLeonardo|Arduino Leonardo]]. The Esplora differs from all
preceding boards in that it provides a built-in, ready-to-use set of onboard
sensors, targeted for user interaction.

Like the Leonardo it has a 16 MHz crystal oscillator, a micro USB connection,
an ICSP header, and a reset button. It contains everything needed to support the microcontroller; simply connect it to a computer with a USB cable to get started.

The Esplora has built-in USB communication, therefore it can appear to a
connected computer as a mouse and keyboard, in addition to a virtual (CDC)
serial / COM port. It also has other implications for the behavior of the board;
these are detailed on the getting started page.


!!!Summary

||border=0
||Microcontroller ||ATmega32u4 ||
||Operating Voltage ||5V ||
||Flash Memory ||256 KB of which 8 KB used by bootloader ||
||SRAM ||8 KB ||
||EEPROM ||4 KB ||
||Clock Speed ||16 MHz ||

!!! Schematic & Reference Design

EAGLE files: arduino-esplora-reference-design.zip\\
Schematic: arduino-esplora-schematic-rev3b.pdf

!!!Memory

The ATmega32u4 has 32 KB (with 4 KB used for the bootloader). It also has 2.5 KB of SRAM and 1 KB of EEPROM (which can be read and written with the EEPROM library).

!!!Input and Output:

The Esplora board can be held like a gamepad and is equipped with the following
devices:

* '''Analog joystick with push button''' on the left side, with X/Y and push button readings.
* '''4 push buttons''' laid out like a romboid.
* '''Linear potentiometer''' as a throttle-like control.
* '''Microphone''' for getting the environment's audio level.
* '''Light sensor''' for getting the environment's lighting condition.
* '''Temperature sensor'''.
* '''Three-axis accelerometer'''.
* '''Buzzer''' with square-wave sound capabilities.
* '''RGB led'''
* '''2 digital I/O pins''' available through TinkerKit 3-pin connectors, that can be used either as digital input or outputs.
* '''2 analog inputs''' available through TinkerKit 3-pin connectors.
* '''SPI/TWI''' in a connector for an optional color LCD screen, an SD card or other devices using this protocol.

In order to cope with the number of available inputs, the board uses an analog
multiplexer so that a single analog input of the microcontroller is shared
among all the input channels (except the 3-axis accelerometer). Four additional microcontroller pins allow to choose which channel to read.

!!!Communication

As the Leonardo the Esplora has a number of facilities for communicating with a computer, another Arduino, or other microcontrollers. The ATmega32U4 provides serial (CDC) communication over USB and appears as a virtual com port to software on the computer. The chip also acts as a full speed USB 2.0 device, using standard USB COM drivers. On Windows, a .inf file is required. The Arduino software includes a serial monitor which allows simple textual data to be sent to and from the Arduino board. The RX and TX LEDs on the board will flash when data is being transmitted via the USB connection to the computer.
The ATmega32U4 also supports SPI communication, that can be used through the SPI library.
The Esplora appears as a generic keyboard and mouse, and can be programmed to control these input devices using the Keyboard and Mouse classes.

!!!Programming

The Esplora can be programmed with the Arduino software (download). Select "Arduino Esplora" from the Tools > Board menu. For details, see the reference and tutorials.
The ATmega32U4 on the Arduino Esplora comes preburned with a bootloader that allows you to upload new code to it without the use of an external hardware programmer. It communicates using the AVR109 protocol.
You can also bypass the bootloader and program the microcontroller through the ICSP (In-Circuit Serial Programming) header; see these instructions for details.

!!!Automatic (Software) Reset and Bootloader Initiation

Rather than requiring a physical press of the reset button before an upload, the Esplora is designed in a way that allows it to be reset by software running on a connected computer. The reset is triggered when the Esplora's virtual (CDC) serial / COM port is opened at 1200 baud and then closed. When this happens, the processor will reset, breaking the USB connection to the computer (meaning that the virtual serial / COM port will disappear). After the processor resets, the bootloader starts, remaining active for about 8 seconds. The bootloader can also be initiated by pressing the reset button on the Esplora. Note that when the board first powers up, it will jump straight to the user sketch, if present, rather than initiating the bootloader.
Because of the way the Esplora handles reset it's best to let the Arduino software try to initiate the reset before uploading, especially if you are in the habit of pressing the reset button before uploading on other boards. If the software can't reset the board you can always start the bootloader by pressing the reset button on the board.

!!!USB Overcurrent Protection

The Leonardo has a resettable polyfuse that protects your computer's USB ports from shorts and overcurrent. Although most computers provide their own internal protection, the fuse provides an extra layer of protection. If more than 500 mA is applied to the USB port, the fuse will automatically break the connection until the short or overload is removed.

!!!Physical Characteristics

The maximum length and width of the Esplora PCB are 6.5 and 2.4 inches respectively, with the USB and TinkerKit connectors extending beyond the latter dimension. Four screw holes allow the board to be attached to a surface or case.

Share