Hi Jason,

I think this Oomlout circuit would be a good starting point for you: http://www.oomlout.com/oom.php/products/ardx/circ-03

It shows how to run a motor using one pin on the Arduino. An Arduino Uno or Nano can easily handle 5 pumps separately this way.

To run bigger motors, you would need to use a transistor with higher ratings, or a relay. And in either case you can use a separate power source to run the motors. Arduino has 5 volts available, but you could hook the motor up to a 12 volt source, for example (hook the grounds together).

Cheers,

-Nico

ps, I have no affiliation with Oomlout. I mention Oomlout a lot in these forums, but that's because they have a great tutorial that is open source and freely available and very easy to understand

Hello,

I want to make time lapse fotography. I need to be able to control a DSLR and a stepper motor. Please tell me if this modules are the right choise:

- Arduino Leonardo

- http://dx.com/p/lcd-keypad-shield-for-arduino-duemilanove-lcd-1602-118059  - LCD with buttons

- http://dx.com/p/arduino-compatible-2-channel-relay-shield-module-138600  - for the stepper motor

- http://dx.com/p/jy-mcu-sensor-shield-v4-0-arduino-uno-2009-123623  - for the photocamera and 2 switches (limiters at the end of the "track")

So there is a 4 modules sandwich!!

Thank you in advance!

How can i read a sound frequency with Arduino?

Can you show me an example schematics and code?

i have Arduino Uno R3.

Thank you

http://www.instructables.com/id/Arduino-Frequency-Detection/

Thank you too much. This is what i want. I'm searching for something like that for about 2-3 months.

My avr is an arduino uno v2

Hey Jeremy,

I live out where we don't have city water and rely on a cistern for our water supply.  I am looking at using an arduino and an ultrasonic sensor to keep track of our water level/usage.  I have no programming or electronics background at all....but have started to catch on to the arduino.  Just curious if you have heard of any similar projects?  I have found a good sketch to give me a reliable meausurement but would like to send a daily email to myself and my wife.  I am struggling with that side of it.  Any help would be greatly appreciated.  Thanks.

Regards,

Jeff

Hi,

I am interested in picking up an Arduino board for a specific project but I would first like to know if it can be done with Arduino. What I would like to build is a Binery Coded Decimal Clock. Is this possible with Arduino and if so, where would I look for instructions on how to do this?

Thanks.

Hi John,

I think this is what you're looking for: http://www.instructables.com/id/Arduino-Binary-Alarm-Clock/

Cheers,

-Nico

I CANNOT ASSIGN COMM PORTS SO THAT I CAN UPLOAD CODE TO THE ARDUINO UNO, HOW CAN I ACCESS THE UUNO WITH CODE?

ROD1932@YAHOO.COM

Hi jeremy,

I am completely new to arduino. I am looking into writing a script that will vary the speed and frequency modulation of a micro vibrating motor. The coin motor and the arduino will be placed into a small object with sensors to activate the modulations. Do you know which arduino will be the correct one? Do they all work the same way? I am leaning towards a nano, but am not sure what i would need to connect it to my computer for configuration and sketching. Also,  this may be a silly question, what is the difference between an arduino and and the PIC10F200 microchip. I read on another thread that this chip can be used to drive a vibrating motor. Ive looked into it and as well cant see how one might configure it, it being so small. At the end of the day, i just need to know which arduino is the smallest, which will require the smallest battery to run (3volts), and what components i will need to buy in order to drive a vibrating motor with sensors to activate the haptic signal.

Please correct me if i am wrong:

1- the nano

2- a vibrating motor

3- a 3 volt battery to power the nano and motor

4- a computer with connection cables (ie. usb) to write the sketch

5- a sensor to activate the sketch

Have i missed something?

Any help will be a great help.

Kind regards,

Dave

Option A: http://arduino.cc/en/Guide/windows

Option B: ICSP

Thanks for that Billabott,

I ve seen the site and read a bit on the various Arduinos. however, I still dont know if they all function the same way. It seems as tho the LilyPad has no port to connect to a computer by usb like the larger arduinos. Would i need an extra external port to connect it. Alos, will the Lilypad run with a simple 3 volt lithium disc battery?...

any help will be perfect

cheers,

db

Yes Nico,  very similar to that except the one that I am looking to build would have 20 LEDs.

Like this:

I will take a look at that instructable and see if I can figure out how to modify it to achieve the 20 LED version.

Then I'll pick up my Arduino and parts.  Can you recommend a version of the Arduino board that I should use?

Thanks for your help.  Much appreciated.

John

I can show you how to do that with 1 microprocessor and using 12  8 i/o pins if using zener current limiting diodes to limit current into and out of the control pin.

Nico:  will that work?  Might have to use two control pins if CLDs will not be happy in parallel (and working cathodes and anodes hetero-paired) but, I think they will, since the ones I found allow 20 volt peak reverse(max.).