- Netduino Forums
- → Viewing Profile: Topics: klotz
The Netduino forums have been replaced by new forums at community.wildernesslabs.co.
This site has been preserved for archival purposes only
and the ability to make new accounts or posts has been turned off.
Community Stats
- Group Members
- Active Posts 60
- Profile Views 8564
- Member Title Advanced Member
- Age Age Unknown
- Birthday Birthday Unknown
-
Gender
Not Telling
1
Neutral
User Tools
Friends
klotz hasn't added any friends yet.
Topics I've Started
Where can I get an at91sam7x512
23 October 2010 - 08:32 PM
As I reported a while back, I killed one of my Netduinos. I recently successfully removed the dead chip, but now I can seem to find any available ( both Mouser and Digikey report out of stock and won't have any 'till after the first of the year).
I believe that I have been able to verify that the board is still viable so I wanted to "glue" a new cpu chip on this guy to test my smd skills.
Any one know where I can locate a at91sam7x512?
Just cooked my 'duino
07 October 2010 - 12:11 AM
I unfortunately plugged my shield in off key without noticing it and when I powered my Netduino it failed to connect. I tried to find the software reason it wouldn't connect rather than what could be wrong with hardware.
Once I notice the shield was not plugged in correctly, I disconnected the power removed the shield and allowed the duino to cool. TOO LATED
Well live and learn. From now on, I won't power-up without checking the connections.
Oh well now I have to order a new one
Just had to get that off my chest.
SFE Joystick Shield
20 August 2010 - 12:28 AM
Just a quick note for anyone who may want to use the SparkFun Electronics Joystick Shield, DEV-09760 http://www.sparkfun....oducts_id=9760.
I bought mine to use for experiments with my Netduino. While it worked fine after I built it, I did find the there were problems with the analog reading for the X and Y pot on the joystick.
Following the information I saw here I had added a patch wire from the 3.3 Vdc to Vref. But noticed that the center readings were 66% of full scale. which meant that the min to center would have twice the resolution of the center to max.
I am a software engineer not a hardware engineer so it took me a full half hour to realize that the problem was that the pots were biased using 5 Vdc.
I change the jumper for Vref to the 5 V source. This did a find job of centering the signal, but the max values were very unstable. I guess I was over driving the A/D. So I cut the trace from 5 V to the joystick and added a wire from 3.3 to the joystick and Vref. Now every thing works just fine. See the attachment.
Why does this happen
14 August 2010 - 01:31 PM
When I execute this snippet on the Netduino, it hangs on the xVar.Read(). After that, I can still see Neduino-neduino on in my devices list, but I am not able to access it from the debuger or MFDeploy.exe.
So far the only remedial action I have found is to totally erase the Neduino and reflash it.
1. Am I doing something wrong in the code?
2. Is there a safer/better recovery than totally erasing the Netduino?
Help.
namespace Bug { public class Program { public static void Main() { // write your code here int xValue = 0; int yValue = 0; AnalogInput xvar = new AnalogInput(Pins.GPIO_PIN_A0); AnalogInput yvar = new AnalogInput(Pins.GPIO_PIN_A1); xvar.SetRange(0, 0xffff); yvar.SetRange(0, 0xFFFF); while (true) { yValue = yvar.Read(); xValue = xvar.Read(); //Debugger hangs here and never recovers. } } } }
So far the only remedial action I have found is to totally erase the Neduino and reflash it.
1. Am I doing something wrong in the code?
2. Is there a safer/better recovery than totally erasing the Netduino?
Help.
Newbie Question
12 August 2010 - 09:47 PM
I just got my Netduino, what I don't understand is the purpose of the little colorful stamp/piece of paper. Also is there a summary of the netduino sdk anywhere. I am an old guy who is used to having a reference other than the code.
- Netduino Forums
- → Viewing Profile: Topics: klotz
- Privacy Policy