Arduino MEGA2560 R3 Compatible Board + MEGA Sensor Shield V2.0

The Mega Sensor Shield V2 board plugs on top of an Arduino MEGA2560 and makes it easy to connect to all the many digital I/Os and analog inputs.

The MEGA2560 has many more I/O pins (54 Digital pins and 16 Analog pins) than a standard Arduino. 

This shield also has connectors specifically for some external devices like an SD Card, Radio communications (Bluetooth and others). 

It also has an option to power the "V" pins on all the Digital I/O 3-pin groups from an external power supply instead of the Arduino +5V. 

This is good for large numbers of servos etc. 

The "Analog" 3-pin groups still use the Arduino +5V which is better from an electrical noise perspective.

This version has two options of +5V supply to all the "V" pins:

Jumper on: +5 comes from the Arduino. Should be limited to about 300ma

Jumper off: +5 (or other appropriate voltage) comes from an external supply connected to the blue terminal strip. External power Ground must also be connected to the blue terminal strip.


Using an external supply allows more current than the Arduino or Mega can supply, such as current for control of many servos or relays, and other attached devices. 

Usually this is +5V because most external devices require it. 

It is possible to use +6 volts if ALL the attached devices are the same such as Servos with that rating.


Dedicated Connectors (pins left to right, top to bottom, as per above listing picture)

ICSP: RST, D52/SCK, D50/MISO, GND, D51/MOSI, 5V

Bluetooth: 3V3, GND, D0/RX0, D1/TX0, GND, 5V

SD Card: D50/MISO, D52/SCK, D53/SS, D51/MOSI, 5V, GND

APC220 (Wireless): --, D19/RX1, D18/TX1, --, 5V, GND

URF01 (ultrasonic): 5V, D48, D49, GND


MEGA2560 R3 Arduino Compatible:

The board is based on the ATmega2560-16AU microcontroller. 

It has 54 digital input/output pins (of which 14 can be used as PWM outputs), 16 analogue inputs, 4 UARTs (hardware serial ports), a 16 MHz crystal oscillator, a USB connection, a power jack, 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 or power it with a AC-to-DC adapter or battery to get started. 

The MEGA2560 is an update for the Arduino Mega, which it replaces, incorporating the CH340G USB to serial chip upgraded from the ATmega16U2.

Like all Arduino compatible boards, it can be programmed using the Arduino IDE via the USB port.


Please note, there are two crystals on the board, one (16MHz resonator next to the R14 resistor) for the microcontroller and another (the 12MHz crystal) for the USB-Serial bridge chip.

This is not an Arduino LLC manufactured board.


Genuinely pre-tested - programmed for LED to double-blink and to output 'DigitalCure'.


Resources:

CH340 version 3.4.2014 drivers required for the MEGA2560:

Mac OSX, Windows, Linux CH340G Drivers - Google 'Sparkfun How to Install CH340 Drivers'

 

Technical parameters:

MicrocontrollerATmega2560
Operating Voltage5V
Input Voltage (recommended)7-12V
Input Voltage (limits)6-20V
Digital I/O Pins54 (of which 15 provide PWM output)
Analog Input Pins16
DC Current per I/O Pin40 mA
DC Current for 3.3V Pin50 mA
Flash Memory256 KB of which 8 KB used by bootloader
SRAM8 KB
EEPROM4 KB
Clock Speed16 MHz

Package includes:

1x MEGA2560 R3 CH340G Microcontroller Board

1x MEGA2560 Sensor Shield V2

1x Dupont cable 10-wires (Please specify Male to Female, Male to Male or Female to Female. May consist of two or three sections)


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