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Hardware Assembly 2.0 Shield

This page is a chapter in 'AeroQuad Shields'

AeroQuad shield v2.0 soldering procedures

Once again, here’s the complete set of components for the IMU, this time the version using the v2.0 shield for Arduino Mega. Included in the picture is the AeroQuad shield v2.0 board, three indicator LEDs, the stackable female headers (Mega pack), the breakout pins (186 total needed), the ITG-3200 triple axis gyro breakout board, the BMA180 triple axis accelerometer breakout board, the BMP085 barometric pressure sensor breakout board, the HMC5843 triple axis magnetometer breakout board, the logic level converter board, two resistors (R3 = 15k and R4 = 7.5k), and a single integrated circuit chip.

A note on electrostatic discharge (ESD)

It is important to take some care when working with the electronics (sensors and the Arduino) in order to prevent them from being damaged by ESD. Here are some recommendations:
  • Ground yourself before touching the electronics. This can be done by touching a metal appliance which is plugged into an electrical socket.
  • Work in an environment where there is less chance of ESD developing, such as on a concrete floor of a garage. Avoid carpets and plastic tables
  • When not in use, store the electronics in an ESD protective plastic bag.

Breakout pins to the sensors boards

Break the breakout pins into nine 10-pin pieces, four 8-pin pieces, six 7-pin pieces, three 6-pin pieces, and one 4-pin piece.


As before, insert the short ends of the breakout pins through the bottom of the sensor breakout boards and solder them on the top.


Stackable female headers (Mega pack) to the shield

As in the v1.9 shield, these will be soldered to the shield in order to allow for an easy attachment and detachment of the shield to the Arduino. Insert the five 8-pin pieces, the one 6-pin piece, and the one 18x2-pin piece from the top of the shield into the slots shown in the picture below and solder them from the bottom of the shield. Then insert the 3x2-pin piece from the bottom and solder it from the top.


Integrated circuit chip to the shield

Insert the single piece integrated circuit chip into its appropriate spot, respecting the orientation. One side of the chip has a semi-circular cutout, as does the outline for the chip on the shield. Insert the chip accordingly from the top and solder its pins from the bottom. The IC is included with the shield and is a ULN2003A Darlington array, and is available separately from Digi-Key.

Sensors to the shield

Insert the four sensor boards and the logic level converter board into the shield from the top and solder them from the bottom. The five breakout boards must already have the breakout pins soldered to them as explained earlier.



Note:
If you want to get more tips about how to mount the pressure sensor, visit this page.

Resistors and LEDs to the shield

The two resistors that come with the shield are a R3=15kohm and R4=7.5kohm. R3 resistor has brown, green, orange, and gold stripes. R4 resistor has purple, green, red, and gold stripes. Place them into their respective spots, solder them from the bottom, and trim off the extra wires.


The three LEDs included in with the shield are to be inserted from the top and soldered from the bottom. The order is left to right on the top, green and then red and the third one on the bottom right is a green one as shown below.



Breakout pins to the shield

There are a total of 149 more breakout pins that need to be soldered to the shield. These will connect various things depicted below. The pins need to be inserted from the top of the shield using their short sides and soldered from the bottom.



No.Description
1Outputs for the I2C based ESCs which will be supported in the near future. Users will have a choice between using the I2C and regular PWM ESCs.
2Outputs for the regular PWM ESCs for brushless motors
3Outputs for servo control. Useful for controlling camera stabilization servos or any other features requiring servo control
412 volt LED outputs. These will support custom user patterns through the Configurator.
5Analog inputs for other sensors such as ultra sonic
6Radio receiver channel inputs
7Connection pins for MAX7456 OSD

Arduino Mega PWM motor outputs

Refer to this page for more information about all the available flight configurations!

The completed v2.0 shield




Schematics

Note:
To view these files it's recommended to use Eagle.


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