13 replies to this topic

[Eric Burdo]

Digital IO is only On/Off. So, do I have to use Analog Output, or PWM to control the intensity of a LED? I'm assuming it would be the same concept as controlling a Piezoelectric Buzzer, which would be PWM.

[klotz]

Use a PWM. You can then control the brightness by changing the duty cycle (duration). I would reference the articles in this forum but you can't search for PWM or LED because of the search rules

[Ravenheart]

PWM is best yes, you CAN do it with a DigitalIO and loop and Thread.Sleep() but thats wasteful and its easier with PWM

[Chris Seto]

Yep, PWM is the way to go. @Raven: Fancy seeing you here

[Ravenheart]

NegativeOne Chris?

[Paul]

Use a PWM. You can then control the brightness by changing the duty cycle (duration). I would reference the articles in this forum but you can't search for PWM or LED because of the search rules

The way to get around the "at least four character" search constraint in the forums is to use Google to do the search. I remember reading the LED brightness posting you mentioned. I went to Google and entered "netduino pwm" as my search. The first few hits were in the Netduino Forums and the second one was exactly the posting you referred to.

Paul

[Chris Seto]

NegativeOne Chris?

Hahah, not here. But yeah, I'm Chris on TinyCLR.

[greg]

Hahah, not here. But yeah, I'm Chris on TinyCLR.

Lots of CLR folks hang out here too ;-)

[Eric Burdo]

Thanks guys... I think that may be my next project to tackle... I want to do a Knight Rider/Cylon display (a fun project to learn with).

[Beijer]

Here is the link to be nice to you guys http://forums.netdui.../103-pwmsample/

[Chris Walker]

Thanks, Beijer. And welcome to the Netduino community!

[Eric Burdo]

Here is the link to be nice to you guys
http://forums.netdui.../103-pwmsample/

Thanks... I'll give that a shot.

And I really think I need to buy another netduino... I have one in the middle of a project, and it would be handy to have a second one.

[dab]

And if you have any questions about the PwmSample, please feel free to post them here or in the Project Showcase forum (I posted the sample code). Let us know when you get the Cylon / Knight Rider circuit working (and share the code if you don't mind).

[Beijer]

Thanks, Beijer. And welcome to the Netduino community!

Hehe, thanks.

Just ordered a netduino a couple of days ago and waiting patiently.
I'm thinking of starting with electronics so I have got me a multimeter, soldering station and breadboard etc. I have a long journey ahead of me.

Any tips on a first project?
I'm complete beginner at electronics but I have good knowledge about C# and the .net framework.


Sorry if I hijacked the thread a bit.