ULight.Me

Beginner question: Would this Camera Axe Shield be compatible with netduino? http://www.dreamingr...asg6tlhjfnj7vp3

I know some people wanted more analog examples and here it is! This was much easier than I thought, force sensors are not that complicated. These are called force sensitive resistors as well. Here is is:

[attachment=799:force sensor schem.PNG]

[attachment=801:force sensor schem 2.PNG]

[attachment=800:force sensor test.jpg]

Magic! Oh right the code....

            AnalogInput input = new AnalogInput(Pins.GPIO_PIN_A0);
            PWM led = new PWM(Pins.GPIO_PIN_D10);

            input.SetRange(0, 100);

            while (true)
            {
                led.SetDutyCycle((uint)input.Read());
                Thread.Sleep(1);
            }

See easy! enjoy

How would you do this using event handling and interrupt port?

SUCCESS I was actually able to UNBRICK my Netduino. It turned out that the issues were being caused by my OS. Atmel doesn't have 64Bit drivers and as soon as I followed the procedure on an windows XP 32bit I was able to connect to the device using SAM-BA and flash the TinyBooterDecompressor.bin to it. After that it was smooth sailing back on my Windows 7 64bit machine where I was able to flash the new Firmware using .NET Micro Framework Deployment Tool everyone can rest easy now we are back in business. Thank you Dan.

Which wiki article did you follow? Since you mentioned touching the pad with the 3.3v jumper I'm going to presume you followed "Installing the TinyBooterDecompressor step by step."

It was the Tiny Booter Decompressor article.

Have you run the Atmel SAM-BA programmer? You will need to manually specify the COM port (You will have to look in the device manager and find the virtual COM port which corresponds to your Netduino).

I did run the SAM-BA but by that time my Netduino was already gone to "Unknown device" state in DM and has no COM ports associated with it. When I try to install the Netduino driver on the "Unknown device" that my Netduino is in DM I get error code 10 "This device cannot start". I should mention that I'm connecting the device to my usb port by holding down the sw1 switch. I've tried without the switch and I get "Unknown device" and no com ports to choose for the SAM-BA.

After you have the new TinyBooter installed, you can then follow the Flashing new firmware step-by-step article and that should have you back up and running.

-dan

I wish

Firstly, I truly appreciate the great response my query prompted on this forum.
To be honest I feel a little proud I somewhat triggered such conversation and a possible tweek/improvement to the core of Netduino platform.

I have to ask why the Netudino (or any microcontroller) is being used in a circuit like this? It doesn't appear to be the right tool to use. Surely this is a job for something like the versatile NE555?

As Mario above mentioned, I fall in the category of geek that was always intrigued by electronics and knows (somewhat) how to solder, but ended up studding programming instead. So when it comes to voltage dividers and 555s and figuring what resistor I need to hook an LED? I have no clue. So I figure, I know how to program, I could follow some example circuit designs with analog and digital input sensors and adopt those to achieve a goal (however simple||challenging) and be proud of my electronic achievement. Plus I think it impresses my wife a little bit

Fair enough if you just want to see if it can be done.

That's exactly it. But more then just seeing if it can be done, us photographers are pretty much programmed to pay for gear and equipment. $50 for a Netduino to catch a bullet in flight may be an overkill but those high-speed photographers that are not do it yourselfers pay upward of $200 for prepackaged circuits that do the same thing.

See: Stop Shot or Camera AXE

To be able to catch a bullet consistently, fired from a BB gun is my personal goal at this time. And the reason I want to do it with a Netduino is expandability, ease of use by programming and off course the COOL factor.