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 Post subject: Overview
PostPosted: Sat Aug 18, 2012 11:04 pm 
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Joined: Thu Sep 08, 2011 9:59 pm
Posts: 71
What is a Proto Shield? We all know that the Shields are from the Arduino world and they are named after the little boards that sits on top of the Arduino and compatible boards. A Proto Shield is a combination of a ProtoBoard with a Shield. You usually use a Bread Board to build a prototype, to test the design. Once you have it working and want to house it in a more permanent board, is where a Proto Shield shows its benefits.

The Protoshield for the chipKIT Uno32 is an exclusive design of NKC Electronics, and it has many nice features:

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The fully assembled protoshield board looks like this:

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The kit includes the board and many extra components. What you finally end up installing on the ProtoShield will be based on your requirements. But in general, I recommend soldering all the female headers, as they are needed to bring all the signals and POWER from the chipKIT Uno32 board to the ProtoShield.

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The LED with the associated resistor and filtering capacitor is to add a POWER indicator, meaning you have 5V power from the chipKIT Uno32 board to the ProtoShield.

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The RESET switch is necessary if you want to reset the chipKIT Uno32 board from the top

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The little 6-pin male header with the 2 jumpers are used to configure how you want to use the 2 power BUSES in the middle of the board. You can send +5V to one of them, GND to the other, or +5 or GND to both of them at the same time.

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If you use the 6-pin male header jumpers to power the BUS, then you can only have +5V. If you need the full ProtoShield to be 3.3V, then you can select one of the jumpers to GND and the other one open and connect +3.3V directly to the positive BUS. Take a look at the diagram below:

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PostPosted: Wed Oct 17, 2012 2:31 am 
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Joined: Wed Oct 17, 2012 2:22 am
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How do I access the signals from the pass-thru connectors? Are the signals brought to pads? What's the preferred way to connect signals to the circuit?


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PostPosted: Wed Oct 17, 2012 9:09 pm 
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Joined: Thu Sep 08, 2011 9:59 pm
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mejeep wrote:
How do I access the signals from the pass-thru connectors? Are the signals brought to pads? What's the preferred way to connect signals to the circuit?


The signals are brought to the pads. If you solder the female headers, then the best way to connect the signals to the circuit is to use wires (solid core) and plug one end to the header and solder the other end to the circuit.

Another way is to solder wires on the bottom of the PCB.

If you prefer to make a more permanent connection, then it is better to use male headers (if you are not going to stack several shields) and solder the wires on the top side of the PCB.


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