Show Posts
Pages: [1] 2
1  Using Arduino / Project Guidance / Re: Help required in washing machine project on: June 12, 2013, 07:56:23 am
Hi Pylon,

I have done some basics projects. I have done some home automation stuff that can be controlled from PC software / Mobile with an Arduino as well . so just thought of doing a washing machine since my commercial washing machine is always giving me problems . The service technician says that the 'PCB is gone'  . Since this is a frequent issue, I thought of doing one.   I am more eager to know about the mechanical advantage of gear. If any of the member has taken the mechanical advantage with gears ( I am sure it is possible with pulley) then it should be possible to drive the load with small DC motors.
2  Using Arduino / Project Guidance / Help required in washing machine project on: June 11, 2013, 09:04:19 am
Hello All,
I am from software background and new to electronics and Hardware world. I recently bought an Arduino just for learning. I am starting a new project - to  build a washing machine.  Basically I am looking for suggestions on  - selection of motor and its drivers, other required circuits. what would be the motor if the required load to drive is about 10Kg? Any links? Do I need to use any gear boxes so that I can use a low powered motor ?

Thanks
Aby
3  Forum 2005-2010 (read only) / Bugs & Suggestions / Re:  Duemilanove Restarts Automatically?! on: October 05, 2009, 12:00:16 pm
At last I found a solution from the software side. FYI, I use .Net platform to talk to Serial port. So here is the code which does not restart Arduino .
Serialport sp = new new SerialPort("COM1", 9600, Parity.None);//Paramters does not matter.

_sPort.DtrEnable = false; // ** Here is the Key!

_sPort.Open();

Hope it will be helpful for some one .

4  Forum 2005-2010 (read only) / Bugs & Suggestions / Re:  Duemilanove Restarts Automatically?! on: September 23, 2009, 12:48:21 pm
Thanks Guys! . It was very helpful. smiley
5  Forum 2005-2010 (read only) / Bugs & Suggestions / Re:  Duemilanove Restarts Automatically?! on: September 23, 2009, 01:03:59 am
ah..hard to believe!.. bye the way, is there anything that I can do in the software side to bypass this issue?

And yes..I am running data logger in the board ...so I can no way loose the data!.
6  Forum 2005-2010 (read only) / Bugs & Suggestions / Re:  Duemilanove Restarts Automatically?! on: September 22, 2009, 07:46:27 am
ah.. did you mean to say that my program will restart  **whenever ** a serial Monitor or similar program is opened.
7  Forum 2005-2010 (read only) / Bugs & Suggestions / Duemilanove Restarts Automatically?! on: September 22, 2009, 03:36:46 am
Hi,

I have got my Duemilanove recenlty. I wrote a simple program to print the data to the Serial Port. The problem is that my program restarts whenever the Serial Moniotr or any such tool is opened(Hyper terminal or any custom application that uses the same COM port).

Steps to reproduce the issue:
 
Get a Duemilanove which is connected to the PC through USB Cable.

1. Run the given program(below)

2. Open the serial monitor -> you will see the LED goes HIGH and then LOW and then printing values 1, 2, 3 etc

3. Close serial monitor and reopen it

Expected result:
a) Serial Monitor should display the values from somewhere 7 , 8 ,9 and then go on.
b) The LED on pin 13 should not blink.

Actual result:
a)Serial Monitor displays the values AGAIN FROM 1,2,3...
b) LED on13 blinks again.

My questions:
a) is it intented behavior?
b) can I make it NOT to restart my application whenever Serial Monitor(or any app that opens the same COM port) is invoked/ ?



Here is the program that tried with:

int ledpin = 13;
int counter = 0;
void setup()
{
Serial.begin(9600);
digitalWrite(ledpin,HIGH);
delay(100);
digitalWrite(ledpin,LOW);
delay(100);
}
void loop()
{
counter++;
Serial.println(counter);
if(counter >=255)
counter =0;
delay(1000);
}

8  Forum 2005-2010 (read only) / Interfacing / Re: Best way to measure water level? on: September 23, 2009, 11:54:02 pm
one more question, water would be the good solution if I plan for going for 'Non contact' based senors to measure the level?
As "Spinlock" suggested, any such cheap sensors are available?
9  Forum 2005-2010 (read only) / Interfacing / Re: Best way to measure water level? on: September 23, 2009, 11:43:31 pm
Hi pluggy

Quote
You'd be struggling getting an led to light directly from it and it may be a bit iffy in distilled water
I am perfectly happy if I can read it with the Arduino's analog pin. I am okay to drive the LEDs with the board . And I am NOT planning to connect an LED directly to the pin which is dipped in water.

but one question: If an LED cannot work when the wire is connected to it, will I able to measure it from Arduino as well?

@by
10  Forum 2005-2010 (read only) / Interfacing / Re: Best way to measure water level? on: September 23, 2009, 02:30:02 pm
Hi Pluggy,
Excellant !. This is what I am looking. Two clarifications:
Quote
Your mileage may vary using an analogue pin and determining how far up the wires the water is.

Could you please explain this statement? Did you mean that I will be able read the analog value , how much water will be there in the tank based on the analogRead() value from this pin?

Also, the tank contains Water. So it is conductor (I guess !). Hence should be fine I guess.Correct?
11  Forum 2005-2010 (read only) / Interfacing / Re: Best way to measure water level? on: September 23, 2009, 01:35:41 pm
Quote
Really cheap is to stick wires in the water and use a voltage divider and an analogue pin

Sorry I dont understand electronics very well. Could you please let me know a link for this circuit diagram?
12  Forum 2005-2010 (read only) / Interfacing / Re: Best way to measure water level? on: September 23, 2009, 01:32:56 pm
Quote
Have you thought about load-cells?
Or a pressure switch

I am trying to measure the level of liquid in a  tank made up of concrete. So I think load cells or pressure switch may not be an option. is that correct?.
13  Forum 2005-2010 (read only) / Interfacing / Best way to measure water level? on: September 23, 2009, 07:17:44 am
I know it is already done by many people and many times.But just wanted to know the best way of measuring the water level in a Tank. I am looking for the moderatley cheap  & simplest solution available. what is the cheapest sensor available for this purpose?
Can I use a  Ultrasonic Transreceiver Transducer (
http://robokits.co.in/shop/index.php?main_page=product_info&products_id=238) like this for this purpose?

Please let me know if there are any cheap sensors are available.

14  Forum 2005-2010 (read only) / Interfacing / Re: Sparkfun Motion Sensor on: September 23, 2009, 01:56:12 pm
Quote
Where are you putting the alarm pin in your USB setup?

Mitch: I meant , I powered the Arduino board from the USB rather than from an external power supply. This was actually two experiments. Let me explain
1st Experiment: Sensor alone
I connected the motion sensor to the external powersupply and found that it is bliking always(irrespective of the motion) - except in the night times.

2nd Experiment.
This has two parts:
 Part A: I Connected the Sensor to the Arduino board (connected the alarm pin to the digital pin 3) and powered the Arduino from the external power supply. I make use of the in built LED connected to pin 13 . I could see that the LED 13 is bliking always.

Part B: The same setup, I just removed the external power supply and connected the board to the computer USB port. And it started functioning properly. Meaning the LED 13 is blinking only when there is a motion.

Please note: If I connect my Arduino board to the external power supply in the night times(in night times the voltage will be higher than the day time ,because there is less usage by the industries around) it works perfectly fine.

As I mentioned earlier, increasing the voltage in the power supply did not fix the issue.
15  Forum 2005-2010 (read only) / Interfacing / Re: Sparkfun Motion Sensor on: September 23, 2009, 01:55:21 pm
Quote
Where are you putting the alarm pin in your USB setup?

Mitch: I meant , I powered the Arduino board from the USB rather than from an external power supply. This was actually two experiments. Let me explain
1st Experiment: Sensor alone
I connected the motion sensor to the external powersupply and found that it is bliking always(irrespective of the motion) - except in the night times.

2nd Experiment.
This has two parts:
 Part A: I Connected the Sensor to the Arduino board (connected the alarm pin to the digital pin 3) and powered the Arduino from the external power supply. I make use of the in built LED connected to pin 13 . I could see that the LED 13 is bliking always.

Part B: The same setup, I just removed the external power supply and connected the board to the computer USB port. And it started functioning properly. Meaning the LED 13 is blinking only when there is a motion.

Please note: If I connect my Arduino board to the external power supply in the night times(in night times the voltage will be higher than the day time ,because there is less usage by the industries around) it works perfectly fine.

As I mentioned earlier, increasing the voltage in the power supply did not fix the issue.
Pages: [1] 2