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There have been 12 items by ULight.Me (Search limited from 26-April 23)
#16263 Compatible Shields and Accessories
Posted by ULight.Me on 03 August 2011 - 05:21 PM in Netduino 2 (and Netduino 1)
#14563 Force Sensor - Easy Example and Special Class
Posted by ULight.Me on 22 June 2011 - 01:44 AM in Netduino 2 (and Netduino 1)
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:
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?
#14097 :( Bricked Netduino :(
Posted by ULight.Me on 08 June 2011 - 07:38 PM in Netduino 2 (and Netduino 1)
#14095 :( Bricked Netduino :(
Posted by ULight.Me on 08 June 2011 - 07:03 PM in Netduino 2 (and Netduino 1)
It was the Tiny Booter Decompressor article.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."
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.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).
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
#14090 :( Bricked Netduino :(
Posted by ULight.Me on 08 June 2011 - 03:52 PM in Netduino 2 (and Netduino 1)
#14014 High Speed Photography
Posted by ULight.Me on 07 June 2011 - 01:11 PM in General Discussion
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.
#12528 High Speed Photography
Posted by ULight.Me on 27 April 2011 - 11:46 AM in General Discussion
Netduino operates with managed code, much more powerful, but also much heavier. The same task can take some millisecond, but it is also uncertain and variable time by time.
Is there a way to test this delay between tripping a trigger and performing a pin short?
Why would the delay be variable?
#12283 High Speed Photography
Posted by ULight.Me on 20 April 2011 - 03:10 PM in General Discussion
#12280 High Speed Photography
Posted by ULight.Me on 20 April 2011 - 02:08 PM in General Discussion
The Arduino sample looks pretty good and really simple.
However, I don't think it can be performed by using a Netduino: the delay between the ADC reading and the flash trigger could be too long.
It seems to me that you need an less-than-one-millisecond response time: perhaps could be hacked in some way even with Netduino, but I guess is somewhat hard.
Cheers
Thank you for your response.
I'm not sure what ADC is there a delay between receiving a trigger from a sensor and performing a pin short? I was assuming that I'd be able to modify this delay programaticaly or through a web interface?
#12275 High Speed Photography
Posted by ULight.Me on 20 April 2011 - 11:35 AM in General Discussion
#12274 High Speed Photography
Posted by ULight.Me on 20 April 2011 - 11:20 AM in General Discussion
I need a delayed trigger circuit that can 'short' the flash hot-shoe pins (to fire a strobe flash) after getting tripped by sound or something passing through a gate (like a water drop)
I'm sorry if I'm not being clear ... I will look for some more links to share on the subject.
#12252 High Speed Photography
Posted by ULight.Me on 19 April 2011 - 07:36 PM in General Discussion
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