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691  Using Arduino / Programming Questions / Re: Using TFT button for dual purposes on: April 05, 2014, 03:28:05 am
Your welcome.  smiley
692  Using Arduino / Project Guidance / Re: Robotic arm from scratch on: April 05, 2014, 03:14:51 am
?
Quote
omega
The Arduino Mega or your power supply? The arduino does have a built in regulator both 5V and 3.3V but the current is tiny, only about 200 mA and 40 mA on the digital pins. Your power supply may have a regulator too, I don't know.
693  Using Arduino / Project Guidance / Re: What is this?? on: April 05, 2014, 02:58:19 am
That small board is a stepper motor, driver, but 2 regular DC motors will work too.
694  Using Arduino / Project Guidance / Re: Robotic arm from scratch on: April 05, 2014, 02:41:27 am
The servos need 6 volts to work properly so you may need a voltage regulator to bring down the voltage.
695  Using Arduino / Project Guidance / Re: Robotic arm from scratch on: April 05, 2014, 02:16:55 am
Well you would need some good torque motors, that is if you don't want to use servos. Or you could also use hydraulic pistons to move the arm.

Servos are good to start with, especially with a kit but for better stronger applications worm gears and hydraulics are the way to go.
One other thing, servos can not run off the 5 volts from the arduino, so you will need an external power supply that can output about 6 volts and decent current ~1 - 2 amps.
696  Using Arduino / Displays / Re: 16x2 LCD nearly works - but has a few strange characters. Why??? on: April 05, 2014, 02:07:06 am
It's possible your screen is getting the ASCII codes for the carriage return and new line. When you see what is printed on the serial monitor see if they are 10 & 13.
697  Using Arduino / Project Guidance / Re: Robotic arm from scratch on: April 05, 2014, 01:58:24 am
If you want your arm to be strong, then use metal worm gears. What is the arm going to be made from and how big will it be?
698  Using Arduino / Project Guidance / Re: need help with judge dredd lawgiver lights and sound [IMAGES] on: April 04, 2014, 09:18:13 pm
I want one.
699  Using Arduino / Displays / Re: Can't get my LCD screen to work. Help? on: April 04, 2014, 09:14:13 pm
Well what does it do? Does anything at all happen, does the backlight come on, do you see black boxes on the screen. Did you remember to have a pot connected to the contrast pin?

Post some pictures of your setup. Please try to make the pictures a reasonable size.
700  Using Arduino / Project Guidance / Re: Bee Hive Scale on: April 04, 2014, 08:38:22 pm
Why not just hang the hive from a digital scale? Or you can make your own scale that way you can have whatever alarms your want.
701  Using Arduino / Programming Questions / Re: Variable Counting on: April 04, 2014, 05:31:46 pm
Make sure you declare all the variables at the top.

if( someVar == 0)
  counter++;
else
  counter = 0;

Its not rocket science.
702  Using Arduino / Project Guidance / Re: Robot wireless mode select on: April 04, 2014, 01:26:50 am
Try this.
Quote
boolean state = digitalRead(Stay) ; // make state boolean at the top of your code
 if( state != lastState )
 {
   if( state == HIGH )
      s = !s;

   lastState = state; // <- this had to be taken out of "if( state == HIGH )"
 }
703  Using Arduino / Project Guidance / Re: Sumobot project on: April 03, 2014, 11:58:15 pm
Backlash, Nightmare and Minion were my favorites.
704  Using Arduino / Project Guidance / Re: Sumobot project on: April 03, 2014, 11:41:19 pm
Basically.
I miss Battlebots
705  Using Arduino / Project Guidance / Re: Sumobot project on: April 03, 2014, 11:13:17 pm
The rules are the same, each component must abide by a certain set of guidelines or rules according to their class to ensure a fair match.

As I said, they will not allow something as small as a toaster to go up against something as big as a lawnmower.
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