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bill.french's ContentThere have been 260 items by bill.french (Search limited from 01-July 23) #6240 my netduino made me a steak
Now that I've got my netduino sous vide functional, i was going to try chicken breasts next, but grabbed a flank steak (sold as 'London Broil' in Shoprite) instead. I cooked it at 135F for about 5 hours. Most recipes call for a slightly lower temperature (130-133 i have seen) and much, much longer times (42 hours, for instance) .. but i am playing it safe temperature wise for now and only had 5 hours to let it cook.
Well, it worked! I did a poor job browning it right before eating it, so the flavor was not nearly as good as it could have been, but it was far and away the least chewy and juiciest steak of this cut I've ever had. I'm going to cook the other half for about 9-10 hours tomorrow and see how it goes. Once I'm a little more comfortable that I am not going to burn the house down I will push the times further. 
#5453 Reading a photoresistor
Any way you can post a photo? Seems like it should work, although the analog inputs only support 3.3v, so maybe you're outside of that with the 5v connection. My other guess is that you're not feeding 3.3v to the aref pin.
This link might be helpful:
http://forums.netdui...ch__1#entry4703
#7022 Newbie on Serialport
Here's another of my threads with a circuit diagram including the phanderson chip:
http://forums.netdui...rst-shield-pcb/
#7100 Suggested socket for a neduino mini?
Perfect, thank you!
#8514 Analog Read
Could you post a link to the specific sensor?
#5145 Ultrasonic Transducer
What are you trying to do? This thread I'm sure has lots of good info:
http://forums.netdui...ch__1#entry4555
I would guess for motion detection, it's going to be hard to beat something like this for simplicity:
http://www.parallax....83/Default.aspx
#5972 net micro framework porting questions
go here for color voting:
http://forums.netdui...ch__1#entry4029
#7877 "Open Collector"
Form the manual for my uLCD-144: (emphasis mine)
From wikipedia, I feel like I have a good handle on what "open collector" means -- but how do I do that with a netduino? #7274 Introduction
Welcome!! What kind of sensors???  http://www.sparkfun.com/categories/23 is my favorite place to start. #4107 Questions about time
I've read these two threads:
http://forums.netdui...rch__1#entry514
http://forums.netdui...rch__1#entry650
My basic question is: what does the netduino know about time, and how can I access it? I (think I) know there's no RTC (real time clock), but there is a RTT (real time timer) which is fine, but what ways to get access to accurate time? Can events be raised by timers?
Most of the samples I've seen deal with timing through thread.sleep.
#7905 "Open Collector"
Great, thanks for the feedback. I wasn't sure if with the netduino I could set it to an inputport and get the same open collector effect -- or use some other technique in code that does not require a transistor (and resistor as fred stated!)
Right now I have it hooked up directly to the netduino and it works fine. So....
#7964 "Universal" LCD Shield
I etched a shield that can take two different LCD screens:
http://www.sparkfun.com/products/10168 (monochrome, about $10) ...and... http://www.sparkfun.com/products/10090 (color, about $32) It also includes a 5 way tactile switch: http://www.sparkfun.com/products/10063 Attached is the etch pdf from Fritzing if anyone cares to make one themselves. Here's some pics: 1. With the color screen, running a simple drawing program I made up using the joystick:  2. With the B&W screen:  3. The shield with no screens:  4. The copper side, my technique has really improved: 
Attached Files
#8750 2 Potentiometers = Freeze-ups
Post the code when you get a chance.
#3813 12V Regulated Power Supply
Great, thanks for the reply. Am I safe to assume all the grounds on the netduino are the same? And that the Vin is tied directly to the inner pin of the power input?
Also, is is safe to have external power and be hooked up to usb for debugging?
Thanks!
#7992 "Universal" LCD Shield
I have it using 5 ports, one for each position. There are two options that I might try out in another etch:
1. Using resistors and an analog port
2. The uLCD-144 actually has the capability to take read the joystick using method 1, in which case it won't use any io ports.
#4111 Questions about time
Cool. Is your stopwatch sample still applicable? It uses Microsoft.SPOT.Hardware.Utility.GetMachineTime().
#6328 Eastern U.S Lunar Eclipse
oh, i'm so sorry!
#5165 Disposability
This is how I started learning about it:
http://forums.netdui...ch__1#entry4293
#4680 Question regarding listeningSocket.Accept();
Regarding Fred's webserver -- and other things of this sort that use
listeningSocket.Accept(); How do you kill them if you want them to stop listening? They are in their own threads, waiting for connections. How to you tell it to stop accepting connections, and also make the thread to go away? My question is actually more about how to do this in general, and not specific to the web server, but it is an example of what I'm trying to understand. Thanks! #4925 Measuring Analog Value and output it on console?
This might help you:
http://forums.netdui...it-and-program/
#4393 Where to find these connectors?
This is probably not exactly what you're looking for, but maybe? They are Ampmodu connectors, you'll commonly see them as the internal audio connection for a cdrom drive:
 -- but they come in lots of different sizes, are keyed, and available from mouser: mouser catalog page One disadvantage, possibly, compared to what you posted is the jacks are usually 90 degree to the pcb. Here's an arduino shield with a bunch of the connectors as an example: 
#3810 12V Regulated Power Supply
I my quest to solve my analog input issues, I have dug out my somewhat decent "12V" regulated power supply that I have had luck with in the past -- which actually puts out 13.8V.
Anyway, the netduino's specs call for 12V, but can it handle 13.8V?
It would be good to know for this application as well as automotive applications since most 12V auto systems run around 13.8V, too.
Come to think of it, it seems most 12V supplies I have come across put out a bit more than 12V.
Thanks!
#6322 Eastern U.S Lunar Eclipse
So, did you see it? Take pics? I have always found lunar eclipses don't live up to the hype, but they are interesting.
#4334 How to utilize full range of Analog Input
I'd be curious to know how to do this, too. My thoughts:
1. I believe you can use the aref to reduce the ceiling, so if you gave aref 2.2v instead of 3.3v, you could get 0-1023 mapped to 0-2200mV, which is a little better.
2. I don't believe you can raise the floor on the built in ADC... i think you'd need to use a differential adc for that?
Or, what about this: (i have no idea if this would work at all)
1. Run j1 through a diode -- i wonder if the .7v drop across the diode would get your output from 1.6-2.2 to .9-1.5v?
2. Feed 1.5v to aref
then, your 0-1023 would map to 900mV to 1500mV? IF that works, maybe two diodes? I suspect there's not enough current moving for the diodes to work.
This is all wild guessing on my part.
#4788 Netduino power
Check this out:
http://forums.netdui...ch__1#entry3812
.. i'm thinking 15v should be fine.
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