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2311  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: What to do when no 'New Hardware Wizard' on: November 12, 2007, 10:27:30 am
Did you try to uninstall the FTDI driver and turn the PC off. Turn it on again and then plug the Arduino board in to the USB ?

This has solved variuos strange problems for me two times.

Of course this is only possible if the FTDI driver was installed in the first place.

As a last resort, try to install on another PC to find out if it is the PC or the Arduino board taht has the problem. Also try a different USB cable.
2312  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Arduino Workshop Basic Kits on: November 06, 2007, 01:44:29 am
if i was to learn about Arduino and teach someone at the same time, i would definitly use Ladyada's tutorials.

You can find them here: http://www.ladyada.net/learn/arduino/

Currently she has 5 lessons, and all the lessons start with a very very detailed list of every single component needed, complete with pictures and all.

The lessons are also very detailed with step by step instructions, pictures, explonations, and even little quizzes to see if you have understood everything.

MikMo
http://www.mikmo.dk
2313  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Onboard LED blinking on: November 10, 2007, 01:20:02 pm
Which of the onboard led's

The one(s) that indicate serial transmission ? or the one connected to pin13? (not all Arduino's has this)

MikMo
http:/www.mikmo.dk
2314  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Arduino digital out --> audio interface digita on: November 07, 2007, 03:38:36 pm
Quote
no, basically i mean :

Arduino digital out (only one, say pin10) ------> Audio's interface digital Input (say M-Audio, MOTU, etc.)

am I too ambitious?? smiley

Sorry -  i didn't read your post properly i misread audio as arduino.

I never heard of that box, it looks cool.

I have made at small test just recently to see how fast i could read controls and send info to my PC. It is no problem to read 16 potentiometers every 10ms (on 2 4051 multiplexer IC's) and send the info to the PC . this wors ok at serial speed of 19200, so i think quite a lot can be done with the Arduino as it is.
2315  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Arduino digital out --> audio interface digita on: November 07, 2007, 06:59:52 am
Do you mean sending from more than one digital out on one Arduini to more than one digital in's on another Arduino ?
2316  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Spot LED on: November 05, 2007, 05:19:44 pm
The Arduino does not know what time it is. But you can do 2 things :

Use a computer with some software to send a signal to the Arduino on the correct times.

Or use a real time clock IC, example here : http://www.arduino.cc/cgi-bin/yabb2/YaBB.pl?num=1191209057/15

MikMo
http://HTTP://www.mikmo.dk
2317  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: Solder Fumes on: November 05, 2007, 03:24:51 am
Just remember that a fan will do nothing but spread the fumes in the room. The fumes should really be extracted out of the room to make a difference-
2318  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: motorized faders in arduino? on: November 02, 2007, 05:14:18 am
To control a DC motor you would typically use a PWM output NOT a digital pin.

You could use a digital pin (+ something more) if you just want to turn the motor on / of, but this would not allow you to control the speed or direction af the motor. You would al least need to control direction since the faders must be able to go both up and down.

so as a minimu you would need some way to turn the motor on and off, and a way to switch polarity on the supply voltage to th motor to enable it to forward / reverse. This would still not give you control over speed.
2319  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: motorized faders in arduino? on: November 01, 2007, 03:02:10 pm
The "raw" ones i have seen was just a potentiometer with a small dc motor with a spindle moving the pot. wiper, so i think you just apply a voltage to the motor to drive it. I think that some fadeers built into mixers can be controlled with some kind of external signal, maybe MIDI but i'm nor sure.
2320  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: motorized faders in arduino? on: November 01, 2007, 01:19:57 pm
Do you want to control the motor or read the fader (potentiometer) with Arduino ?

I think that both is possible. Motorized faders are just slide potentiometers where the wiper is moved by a motor. Arduino can both control a DC (or stepper) motor, and read the value of the potentiometer.
2321  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: web streaming analog radio receiver on: November 02, 2007, 05:24:22 am
.......and then stream them to the web via Arduino.

I don't think that this is possible. Arduino has no built in capability for handeling neither audio signals nor web streaming.

And no built in WIFI.

I think yhat you would need a PC in the box to achieve this.
2322  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: buying arduino on: October 31, 2007, 02:15:59 pm
That depends on what you order  smiley-razz

Arduino is a low cost open source project.

Most places sell the arduino board (or compatible board) alone, but some places sell the board as a package with other stuff, power supply USB cable electronics components etc...

My two boards arrived in an antistatic bag with nothing else but the boards - just as i ordered them.

MikMo
http://www.mikmo.dk
2323  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: robotic drum? on: October 31, 2007, 01:30:56 pm
You can probably achieve this by using a solenoid.

Solenoids are electromagnets that can move an arm or a lever when a current is passing throug it.
You can find info on how to do this in the playground here:

http://www.arduino.cc/playground/Main/SolenoidTutorial

MikMo
http://www.mikmo.dk

EDIT: Check this YouTube video
2324  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: analog multiplexing and sensors on: October 30, 2007, 01:32:33 pm
I have now made som more tests.

I have written a small program on my PC and i have setup Arduino to read the 16 potentiometers send their values to the PC program. I read the potentiometers and send the values every 10 ms and it doesen't seem to be a problem.

If the sensors you were thinking about using are the kind that send out a voltage (like my potentiometers do) i can't see why you shouldn't be able to read them just as fast.

One thing to note is that right now i don't do anything with the values on the Arduino, i just send them. In a real life situaton some processing would probably take place in the Arduino program, using a little more time.

MikMo

http://www.mikmo.dk

EDIT: I tried at serial speeds of both 9600, 19200 and 38400. The PC program seemd to be a little less responsive at 9600. 19200 and 38400 worked fine.
2325  Forum 2005-2010 (read only) / Frequently-Asked Questions / Re: analog multiplexing and sensors on: October 23, 2007, 02:11:43 am
I use 16 slide potentiometers. I haven't done any serious stress testing to see how fast you can change the potentiometers and still get reliable readings. My project is only in the initial phase. The multiplexer is the first submodule i build. I made a small PCB for it. I will post a complete step by step "how to" as soon as i get some time. But it is basically just two CD4051 IC's, and some kode based on the 4051 example in the Playground.

MikMo
http://www.mikmo.dk
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