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931  Using Arduino / Project Guidance / Re: Hey, need some help on where to start programming! (Balancing Bot) on: October 05, 2013, 03:58:33 pm
You cant use those pins (2,4,7,8) for your motors and analogWrite together. AnalogWrite uses the PWM pins (3,5,6,9,10,11), so what you have now will at best give you full forward and full reverse.

Just pointing that out.
932  Using Arduino / Project Guidance / Re: Mosfet getting hot and motor vibrating using a 3.6v motor. on: October 05, 2013, 12:51:42 am
Hi, change the layout on the protoboard, where you have the 3.3V battery connected is a long way from the motor through small conductors.

Move the positive battery connection up to next to the positive motor wire, and the negative battery to the source lead of the MOSFET. This way you minimize the length of fine gauge conductors under the board.

Do you have  digital multimeter to measure around the circuit?

Tom... smiley

It's 4 inches away! It's not going to make a difference. The problem is current.
933  Using Arduino / Project Guidance / Re: Mosfet getting hot and motor vibrating using a 3.6v motor. on: October 04, 2013, 05:24:07 pm
The motor looks fine, I've used many of those in the past, but that battery does look a little too small to supply the necessary current needed for this to work correctly. Try to get a 9V, and see if it makes a difference. If anything, you will rule out the power source and if that still doesn't solve the problem, then it could just be a bad Mosfet.

Keep us posted.
934  Using Arduino / Project Guidance / Re: Mosfet getting hot and motor vibrating using a 3.6v motor. on: October 03, 2013, 10:17:57 pm
Either the MOSFET is backwards or the diode is backwards. Does it still get hot when not connected to the arduino?
935  Using Arduino / Project Guidance / Re: Mosfet getting hot and motor vibrating using a 3.6v motor. on: October 03, 2013, 09:38:42 pm
Can you show us your schematic? Either hand drawn or picture will do.
936  Using Arduino / Project Guidance / Re: Touch screen keypad value input help on: October 03, 2013, 08:51:03 pm
I made a keypad password screen that works. You may be able to store the characters in an array and then use atof(), make sure you include a null terminator. That is of course, if atof() is a recognized Arduino function, if not, you may need to take the long way around.

Added:
atof does work.

Code:
char number[] = "12.34";

void setup() {
  Serial.begin(9600);
  delay(1);
  Serial.print(atof(number));
}

void loop() {
 
}

937  Using Arduino / Audio / Re: Arduino library for WTV020-SD-16P audio module on: October 03, 2013, 12:52:51 pm
Not saying that's wrong to do, but some of the older sketches don't know to look for either Wprogram.h or Arduino.h, some are just set for Wprogram.h.

I always check anyways.
938  Using Arduino / Programming Questions / Re: Welcome Please help is simple on: October 03, 2013, 01:19:23 am
SensorRead and SensorValue are two different variables.
939  Community / Gigs and Collaborations / Re: PLEASE HELP! URGENT DEADLINE! on: October 01, 2013, 09:42:42 pm
Look at the addresses, and what each one contains.
940  Using Arduino / Project Guidance / Re: 10 12vdc motors with limit switches for both directions on: October 01, 2013, 09:10:16 pm
There is and that's with the Arduino, but you will only have fully open or fully closed unless YOU actually tell it to stop mid way or something. Without any other sensors, its time based. So technically you could have it to stop mid way, you'll just need to tell it where mid way is. It takes time to fully open and fully close, so find the calculate the time of the midpoint.
941  Using Arduino / Project Guidance / Re: 10 12vdc motors with limit switches for both directions on: October 01, 2013, 08:46:34 pm
Quote
Being able to stop the blinds in various positions is required also

Well that will be kinda hard with only two limit switches.
942  Using Arduino / Project Guidance / Re: 10 12vdc motors with limit switches for both directions on: October 01, 2013, 06:05:19 pm
Get 5 of these or something simular. Dual motor controller

What brand of smart phone Android, Apple, Blackberry...? Android can sync to quite a bunch of Bluetooth modules, wifi may be a little harder. Apple can only sync with Bluetooth 4.0 modules, again wifi will be harder. Blackberry, Im not sure the difficulty of either BT or wifi.
943  Using Arduino / Project Guidance / Re: Servos not working properly and being weird on: October 01, 2013, 05:51:22 pm
Then your gear is bad, and you need a new servo.
Do what Paul__B said, and swap the gears. If that same servo still does not work then there is another problem, but it the problem transfers to the other servo then you know for certain that it is a bad gear.
944  Using Arduino / Project Guidance / Re: 10 12vdc motors with limit switches for both directions on: October 01, 2013, 05:47:08 pm
The Arduino can, yes, but depending on how you want to do this will tell you which Arduino to get. Each motor will need a minimum of two pins, either use both to control the motor, or use one to control the direction it rotates and the other as an enable.

Now being that you have ten motors, that means you need 20 pins, not including the pins needed for a possible Bluetooth or Wifi module. However if you tie all the enable wires together, then you will save 9 pins. Not sure how effective it will be, but it is one way to do it. Another way is to use the Demux to select which motor to drive, but that will only allow one motor to run at a time. The third method would be to get an Arduino Mega, that way you can control each motor individually.

One other thing to address, your using DC motors, so getting exact position will be difficult without any kind of limit switch or rotary encoder to tell it where it is and how much further it still needs to go.
945  Using Arduino / Project Guidance / Re: Servos not working properly and being weird on: October 01, 2013, 05:21:07 pm
With that gear off, does everything else spin freely? If you rotate the gear by hand while the servo is spinning, does it move?
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