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4291  Using Arduino / Project Guidance / Re: LED Touch Instrument on: October 11, 2012, 10:41:52 pm
http://www.ginsingsound.com/tools

http://www.ginsingsound.com/download-banner
4292  Using Arduino / Project Guidance / Re: Lifting up to 100 pounds with motor on: October 11, 2012, 10:29:06 pm
I think your best bet is a "linear actuator" to lift the back side of the tilting platform.  It's a combination of a DC motor and a screw thread that acts like an electric piston.
4293  Using Arduino / Project Guidance / Re: Lifting up to 100 pounds with motor on: October 11, 2012, 05:26:26 pm
"619* oz-in." of torque.  That means to lift 105 pounds (1680 ounces) the load has to be less than 0.36" from the center of the axel.  I don't think that's going to work.

If you want to tilt a 2'x2' platform weighing 105 pounds (loaded) you will need at least a 105 foot-pounds (20,160 oz-in's) of torque.
4294  Using Arduino / Installation & Troubleshooting / Re: bricked arduinos on: October 11, 2012, 05:12:58 pm
Have you tried using manual reset when programming?  Hold down the Reset button, click on the upload button, release the Reset button when you see a blink of the receive LED.
4295  Using Arduino / Displays / Re: DIY HD TV on: October 11, 2012, 05:06:32 pm
Arduino doesn't really have the bandwidth for HDTV.

Perhaps the RaspberryPi could do it.  You'd ned a tuner input of some kind and a monitor with an HDMI input.

Where do you get a 60" OLED display that costs very little?
4296  Topics / Robotics / Re: RC reciever to analog 0-5 voltage on: October 11, 2012, 05:00:58 pm
And for two channels (with RC output pulses of 1000 to 3000 uS instead of 1000 to 2000):

Code:
const int inputPinA = 2;  // The pin connected to the RC receiver's servo output A
const int outputPinA = 3;  // Output PWM pin A
const int inputPinB = 4;  // The pin connected to the RC receiver's servo output B
const int outputPinB = 5;  // Output PWM pin B

void setup() {
    pinMode(inputPinA, INPUT);
    pinMode(inputPinB, INPUT);
}

void loop() {
    unsigned long pulseLength;

    pulseLength = constrain(pulseIn(inputPinA, HIGH), 1000, 3000);
    analogWrite(outputPinA, map(pulseLength, 1000, 3000, 0, 255));

    pulseLength = constrain(pulseIn(inputPinB, HIGH), 1000, 3000);
    analogWrite(outputPinB, map(pulseLength, 1000, 3000, 0, 255));
}
4297  Using Arduino / Project Guidance / Re: Square Wave manipulation on: October 11, 2012, 12:29:59 pm
0.0000079 seconds = 0.0079 milliseconds = 7.9 microseconds.  The arduino executes 16 instruction cycles per microsecond so that's  126 clock cycles for each 1/2 degree of timing at max RPM.  The Arduino is capable of generating pulses to that degree of accuracy.  It's just a small matter of programming. smiley
4298  Using Arduino / Networking, Protocols, and Devices / Re: WiFi shield help please on: October 11, 2012, 12:02:19 pm
IP Address: 192.xxx.2.27

except digits in place of 'x's - I just don't want to put the whole ip address up on the web.

Don't worry.  192.168.x.x is one of the "non-routable" Ip address ranges used by LANs.  Nobody can reach that address from outside your network unless you set up port forwarding on your router.  10.x.x.x is another such range.
4299  Using Arduino / Programming Questions / Re: Problem using String on: October 11, 2012, 11:10:20 am
You could do it "The Arduino Way".  smiley

Code:
#include <MemoryFree.h>
void setup() {
  Serial.begin(9600);
}
void loop() {
  for (int n = 0; n <=100; n++) {
    int u = 20*n;
    int v = 30*n;
    Serial.print(n, DEC);
    Serial.print(", ");
    Serial.print(u, DEC);
    Serial.print(", ");
    Serial.print(v, DEC);
    Serial.print(", ");
    Serial.println(freeMemory(), DEC);

    delay(500);
  }
  Serial.println("Done"); 
}
4300  Using Arduino / Networking, Protocols, and Devices / Re: WiFi shield help please on: October 11, 2012, 10:48:45 am
I changed the setup() to port 81, and then nothing works (even when the WiFiServer part is entirely commented out). It just hangs at "Connecting to server."

Of course it fails since Google.com is not serving on port 81.

What does it display for your "IP Address"?
4301  Community / Bar Sport / Re: What would you do? on: October 11, 2012, 10:38:44 am
I'd be nice to them.
4302  Using Arduino / Installation & Troubleshooting / Re: Programming Atmega8-16PU error (not in sync) on: October 11, 2012, 10:30:31 am
You can't burn the bootloader with a USB-to-Serial connection.  You need an ISP device.  If you have an Arduino you can use the ArduinoISP sketch as your ISP device.  You will need the 16 MHz crystal (and load caps) or 16 MHz resonator connected to your chip before you can burn the bootloader.
4303  International / India / Re: w5100 Ethernet shield on: October 11, 2012, 10:26:19 am
Can't you order one from China/Hong Kong?  Look on eBay.
4304  Using Arduino / Microcontrollers / Re: Which Arduino Board to use?? on: October 11, 2012, 10:24:45 am
http://www.makershed.com/2_8_TFT_Touch_Shield_For_Arduino_p/mkad36.htm

"Uses digital pins 5-13 and analog 0-3. That means you can use digital pins 2, 3 and analog 4 and 5. Pin 12 is available if not using the microSD"

"Works with any Arduino '328 "  (That would include the Arduino UNO.)
4305  Using Arduino / General Electronics / Re: Troubleshooting Piezoelectric element on: October 11, 2012, 10:14:36 am
Could your resistor be too low?  Could you have the disk backward?  Are you sure it's a raw disk and not a buzzer with active electronics?
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