Show Posts
Pages: 1 ... 37 38 [39] 40 41 ... 225
571  Using Arduino / Project Guidance / Re: I have problem in space... arduino uno on: January 11, 2014, 04:17:07 am
I finished my project then I tried it... the code is alot ... no space

That doesn't make sense- how did you finish it if it didn't fit?

But as AWOL has said you seem to have plenty of space- it's using 1/4

This error:

avrdude: stk500_getsync(): not in sync: resp=0x00'

.... might mean something else like a communications problem and maybe it's not uploading? (I must confess those messages mean about zilch to me....)
572  Using Arduino / Installation & Troubleshooting / Re: [RESOLVED] Power Jack for power and USB for communication on: January 11, 2014, 04:03:15 am
Have a look at this thread which says that the external (non-usb) supply wins, provided it's adequate.

573  Using Arduino / Programming Questions / Re: I do not understand this error message asking me to put a parenthesis on: January 10, 2014, 11:45:40 pm
You have no ; at the end of the line before that, and in that previous line your end ) is on the wrong side of the "

Serial.println("In Light)"   //wrong

Serial.println("In Light");  //right
574  Using Arduino / Networking, Protocols, and Devices / Re: real-time data from arduino sensors to mobile web browser using ethernet shield on: January 10, 2014, 11:37:08 pm
Since the whole idea of Ajax is that it sends only the characters it needs to update the browser page, that presumably means a very small amount of transmission to your browser so yeah I guess it's strange that it's "crashing" (whatever that means....)

Have you tried other browsers?
575  Using Arduino / Sensors / Re: I `m trying to use a joystic as a mouse but had some problems. on: January 10, 2014, 10:20:26 pm
I'm guessing the s-k pin is digital output from the press switch.

Interesting that that joystick has separate power for each axis.... I've never seen that before.
576  Using Arduino / Networking, Protocols, and Devices / Re: Why can't I assign my Ethernet shield and IP address? on: January 10, 2014, 10:12:09 pm
I've also seen it recommended that if the microSD isn't being used, it's worth explicitly disabling it by taking its SS pin high:

int SDcard_SSpin= 4;  // for Uno anyway
pinMode(SDcard_SSpin, OUTPUT)
digitalWrite(SDcard_SSpin, HIGH)
577  Using Arduino / Installation & Troubleshooting / Re: Serial Port Already In Use on: January 10, 2014, 10:03:00 pm
Sounds like you've checked everything, but are you sure there's no software using that port?

I for example, sometimes monitor my serial output with PuTTY rather than the IDE monitor. Then I forget to close it before a compile / upload, so the IDE gives me your exact message. (One advantage of using the IDE monitor of course: it closes when you hit compile.... )
578  Using Arduino / Project Guidance / Re: Please help me make a ball on a beam on: January 10, 2014, 09:56:35 pm
Your English is fine.....

Way back when I was a student, one of our first-year courses was "Engineering Analysis and Design"... there we learned how to engineer. In my opinion you'll learn more from this project if you use it to firm up your knowledge of how to do engineering. So, rather than asking questions like "Could you explain what do I need to make this ?", I think you should be following an analysis and design process such as shown here

I know you want to dive in and make stuff. But in the long run you'll be much better off if you follow a process including problem analysis and kicking around a whole load of ideas. That way, you'll figure out the answer to this question "I think so as to make it I need a sensor(I don't know which kind of sensor..)" yourself. Maybe it will be a sensor to measure the angle of the beam? Maybe it will measure the position of the ball? Maybe it will be.... who knows?

Then ask the questions here.... ask for help with how to wire that sensor up, or how to code to read it etc...

Design yourself a solution. Engineer it.....
579  Using Arduino / Programming Questions / Re: Server IP at on: January 10, 2014, 11:03:41 am
Post your code- I'll run it and see what happens.
580  Topics / Robotics / Re: uArmⅠ:An open source robot arm on: January 10, 2014, 08:55:54 am
The uFactory guys have accommodated me royally... they sent cad drawings and a parts list...
Hi JimboZA,
 can you share those cad drawings and part list?
Thank you in advance!

No, they're not mine to share. You'll need to speak to uF about that.
581  Using Arduino / Installation & Troubleshooting / Re: [RESOLVED] Power Jack for power and USB for communication on: January 10, 2014, 08:00:42 am
Maybe unmark it as solved until you get a couple more replies just in case I have it back-to-front
582  Using Arduino / Installation & Troubleshooting / Re: Power Jack for power and USB for communication on: January 10, 2014, 07:00:51 am
First, your English is better than that of many English First Language users Laura, so no need to apologise.

Second, afaik, Arduino chooses the higher of the two voltage supplies- I seem to remember reading that in a post recently. So it'll power the card from your (say) 9V wall plug adaptor, while still communicating on the USB with its native 5V. (I think.....)
583  Topics / Robotics / Re: uArmⅠ:An open source robot arm on: January 10, 2014, 06:38:21 am
Where could I download all the stuff required to create the arm?

The uFactory guys have accommodated me royally... they sent cad drawings and a parts list. I found a local laser cutting guy who is making my parts in the next couple of days. My job's next in his shop. EDIT.... my cutting is done, I'll collect Monday  smiley-grin

You def don't want to buy a cutter, pretty sure that's beeeeeeeg dinari, but my guy's doing it for 600ZAR... right now that's about 60USD, 40GBP more or less.  He's doing it in black Plexiglass aka Perspex.

All the other parts are commercial: bearings with standard part numbers, standard M-series screws. 3x standard servos, 1x tiny one.
584  Using Arduino / Project Guidance / Re: Strange readings from a temp sensor on: January 10, 2014, 06:26:47 am
That set up is literally identical to mine.... well not literally, since mine has an RTC too.

I do notice odd changes in temp.... like today it was hovering around high 20s C (summer here  smiley-grin ) and for a short while it was in the 40s. I put this down to transient issues on the analog pin.... I have a mains 3-way extension lurking nearby. But usually the LM35 agrees with my Fluke thermocouple to a degree or three. Right now they are both hovering around 26-27C.

See me here

Matter of interest, I held the Fluke thermocouple on the 5100 chip earlier... it's warm to the touch, not too hot to touch though, and it Flukes at about 42C.
585  Using Arduino / Project Guidance / Re: Controlling Servos with Arduino Uno R3 on: January 10, 2014, 06:16:36 am
Hello everyone i would like to ask that can i write codes for a modified hitec servo.?

Pretty sure the answer to that would be "yes", but what do you mean? Codes to do what? What does modified mean?

Also, you should start a new thread for this question, rather than hi-jacking an existing discussion.
Pages: 1 ... 37 38 [39] 40 41 ... 225