First Gadgeteer Project

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Where are you?

• Making a VS project
• Parts of a C# program
• Basics of C# syntax
• Debugging in VS

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• Questions?

Gadgeteer Assignments

• Each of you will be assigned a kit.
• You are responsible for that kit.
• Make sure all parts are there
• Make sure kit is returned to appropriate numeric order in storage
• Missing parts or kits will be assessed as a fine.

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• Checking out kits:
• By seating order at the beginning of lab.
• Can not just get them

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• Checking in kits:
• By seating order – at the end of lab.
• Need to maintain numeric order
• Do we need assigned a kit monitor?

Creating a Gadgeteer Project

• Start with ‘New Project …’
• Select the Gadgeteer template
• Name it ‘’FirstGadgeteerApp’
• ‘OK’

This brings up ‘the wizard’

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Important Points

• Get modules from the toolbox
• You always need a (red) power module
• Right Click -> Connect all modules
• Note the connections and names of the modules

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Wizard ready to generate code

Step #1

• Create a Gadgeteer project named:
• FirstGadgeteerApp
• Add
• A red power module (USBClientDP)
• A Potentiometer (aka the Knob)
• A LED7R
• Right Click - Connect the modules
• Raise your hand when you are done or if you have a problem

Physically Connecting up the Gadgeteer modules

Solution Explorer

Connecting up the Gadgeteer

• Connect to the same connectors that you used in the wizard.
• Forgot what connectors you used?
• Lost connections demo

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Step #2

• Connect the knob, lED7R, and USBClient modules (In the right places)
• The connectors are ‘keyed’ so they will only go in the right way
• Don’t force anything
• Connect the USB cable to the red module and to your machine
• Raise you hand when you are done

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Adding some code

Step 3 – Adding the code

• void ProgramStarted()
• {
• {

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• double percent; // this variable holds the output from the potentiometer. This ia a value between 0 and 1

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• int intensity; // this variable holds the level of the intensity that the led will be set to. This is a value between 0 and 255

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• Debug.Print("Program Started");
• while (true) // this loop goes on forever since the condition is always true
• {

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• percent = potentiometer.ReadPotentiometerPercentage(); // read the current potentiometer value into the variable

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• intensity = (int)(percent * 255); // convert the percentage ( double 0-1) to intensity (integer 0-255)

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• Debug.Print("Integer = " + intensity.ToString()); // write the intensity that we are setting to the output window for comparison

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• System.Threading.Thread.Sleep(50); //slow the loop down a bit by waiting 50 mS between iterations

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• }

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• }

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• }
• }

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Important Points in Adding Code

• IntelliSense – use the ‘Tab’ key to let it do the typing.
• Replace the ‘Not Implemented’ exception in the event handler

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‘Exception’ == Error event and message

Step #3

• Add the code to your application
• Use IntelliSense
• Do you have any Syntax errors?
• Fix them
• Build Solution
• Build Succeeded?

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• Raise your hand when you are done

Deploying your application

Step #4

• Deploying your Application
• Your device is connected to the USB port on your laptop
• Hit ‘F5’ or ‘Debug->StartDebugging
• Immediate Window shows ‘Program Started’
• This may take a bit – the program is rebuilt, sent to the device, and the device is restarted.
• Press the button on your device

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Important Points

• F5 to deploy
• Watch the build status
• Lots of output you don’t need to worry about in the Immediate window – just the last bit
• Your application is running on the micro processor on the mainboard

Assignment #4

• Deploy and test your app.

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• Raise you hand when you have change numbers of the knob’s value in the console.
• Raise your hand if you get an error