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Home Shields - MultiWii Bob's Super Simple Shield
Bob's Super Simple Shield PDF Print E-mail
Written by Bob   

bsss-1-0-4

 

 

 

 

 >>  Available in Extremely Limited quantities,
 >>  contact me via pm @ rcgroups - bob4432 









Thank you for your interest in the Super Simple Shield for the MultiWii Project.  The goal of this shield is for beginners and advance users alike, with the emphasis on simplicity – a K.I.S.S. MultiWii Shield designed for the Arduino ProMini (5V/16MHz).

Bob's Super Simple Shield, Rev. 1.0.4 (Designed by B. Miller, USA, bob4432 on RCGroups):

  • All of the features of Revision 1.0.3 with the addition/s:
  • Addition of A6 & A7 breakout to keep current with the the most up-to-date ProMini design

Bob’s Super Simple Shield, Rev. 1.0.3 (Designed by B. Miller, USA, bob4432 on RCGroups):

  • All of the features of Revision 1.0.2 with the addition/s:
  • Added a pass-through hole in upper right corner of board above the 'AIL' marking making it much easier for you if you decide to mount a seperate breakout on the bottom side of the board - No more need to go around the board, now you can just go through it grin.
  • Changed the label 'BT' to Comm
  • Misc trace & screen print enhancements

Bob’s Super Simple Shield, Rev. 1.0.2 (Designed by B. Miller, USA, bob4432 on RCGroups):

  • All of the features of Revision 1.0.1 with the addition/s:
  • Changed the label 'BT' to Comm
  • Misc trace & screen print enhancements

Bob’s Super Simple Shield, Rev. 1.0.1 (Designed by B. Miller, USA, bob4432 on RCGroups):

  • All of the features of Revision 1.0 with the addition/s
  • Blue Tooth (BT)/Comm Port - Simply adjust the multiple MultiWii parameters with the addition of a BT Dongle and your BT enabled computer or for a more 'Field Friendly' setup, your Android Powered Phone with the Android MultiWii Configurator App

Bob’s Super Simple Shield, Rev. 1.0 (Designed by B. Miller, USA, bob4432 on RCGroups):

  • Standard 50 x 50mm size with mounting holes at 45 x 45mm
  • Mounting holes accommodate a #4 or 3mm fastener
  • Multiple mounting choices for sensor boards
  • 5V & 3V3* Power at both mounting sites (*3V3 requires a 3V3 Kit consisting of a 3V3 LDO Regulator and 2 capacitors)
  • All 5V power is connected together and are powered from the ESC BECs
  • D12 is brought out for WM+ connectivity
  • Aux2 is brought out from Pin8

Overview:
Care was taken in the selection of the 3V3 regulator so that the input and output capacitor are the same value and are non-polarized, ceramic units - 1µF, X7R, 10%, 2.5mm lead spacing, so no worry about putting a capacitor in backwards and letting the magic smoke out. Through Hole parts were selected to speed up board completion with just a soldering iron so you can spend more time flying and less time building without the worry of dealing with any SMT components, regardless of size.

To turn the BSSS from a bare shield into a Flight Controller, you will need an Arduino ProMini (5V/16MHz), soldering the sensor board of your choice to the appropriate pads, and the miscellaneous male and female headers for ESC, RX and BT connectivity.

For reference, the 3V3 regulator pin out illustration:
MCP1700-3302E/TO (TO-92) LDO Regulator

As you can see, along the left side of the shield, up top you have the Power and Data connections for the Sensor Board of your choice including pin D12 which has been brought out as that is the preferred method of power connectivity for those that will be flying with a WiiMotion+, the cornerstone of the project and what started it all. Below the Power and Data connections, you will see the different motor and servo connection options.  As of v1.9 of the MultiWii code, you can fly hexas with a regular RX (No PPM output needed), look in the code to configure the hexas via A0 & A1 now.

Along the right side of the shield, in the upper area is where the RX connections come in. Again, the 5V line is connected to the other 5V lines so powering your RX from the Shield is taken care of. You will see 6 RX connections instead of 5 – the 6th channel – Aux2 is brought out from pin D8, an option that Alex has in v1.9 of the code. Please understand how the D8 pin works and your sketch is setup correctly as this new feature is implemented.

As you can see, there are no “Motor 1, Motor 2” etc labels. The reason for that is I felt that labeling the shield with the actual pin numbers that correlate to the Arduino ProMini (5V/16MHz) would be more efficient in every aspect for a shield that is designed for a project that is so versatile. I thank you for your interest in the Super Simple Shield, you will not be disappointed in your decision to fly with it.

Assembly:
3V3 - If you need 3V3 for a sensor board or would just like to have it already installed for future setups, simply bridge the solder jumper labeled '3V3' on the Super Simple Shield and install the 3V3 components - two, 1μF, X7R, 10% voltage appropriate capacitors and the Voltage Regulator, the Microchip MCP1700-3302E/TO (TO-92).  Being this is the Super Simple Shield, I searched for a 3V3 Regulator that is compatible with ceramic capacitors of the same value to be on both the input and output. I found this in the Microchip MCP1700-3302E/TO (TO-92) LDO Regulator which can supply up to 250mA @ 3V3 and recommends a 1μF, X7R ceramic capacitor on the input and output.

Once the 3V3 portion is complete, or if you do not need it, simply populate the rest of the board how you would like. There are multiple ways to attach the Arduino ProMini (5V/16MHz), I have seen some solder the Arduino ProMini (5V/16MHz) directly to the board and more commonly female headers on the Super Simple Shield with male pins on the Arduino ProMini (5V/16MHz). Atfer the Arduino ProMini (5V/16MHz) is setup however you would like, attach your connections for the RX inputs, sensors and ESC outputs. If you do not want to use power from multiple ESCs.  Remember that if you are going to be flying a Tri, Pin 3 goes to the yaw servo, so power will be needed for that servo. If you desire, since the 5V line is all connected, you can opt to power the Super Simple Shield from an external UBEC and no ESCs BEC at all, again, completely up to you.

Bob's Super Simple Shield Diagram - If you would like to use this diagram, by all means do, but please link it from this website as I will make updates to the diagram as needed taking care of any new concerns that are brought to my attention.  This way, everybody will have the same, most up-to-date diagram - the direct address of this image is - http://www.bobsquads.com/images/bsss-diagram.png - Thanks, Bob:

bsss-diagram


Connection Diagrams:
MultiWii - Connecting Elements
Berkely Blog - PDF Connection Diagrams

Revision 1.0.4:
bsss-1-0-4

Revision 1.0.3:
BSSS-1-0-3

Revision 1.0.2:
Bob's Super Simple Shield 1.0.2

Revision 1.0.1:
Bob's Super Simple Shield 1.0.1













Revision 1.0:
Bob's Super Simple Shield 1.0