its cool and all but I dont see me using it.

I move my arduino's around constantly, using them for not much more than prototyping, then they go back in the bin, I also use other controllers and sometimes no controller

my pc on the other hand gets used for every single thing I do on the bench (at the minimum looking at datasheets) and has not moved in a couple years

I dont emulate, but I got a cheap 10$ tv tuner card which lets me have the output in a window

opto-isolator is the best bet, or a resister + zener diode

have the current come in and hit a resistor (1k?) so there is not much current, then use a 5 volt zener to drop the voltage to safe levels and feed into normal digital input

dont feed the arduino anything over 5 volts, especially the analog channels. There is the argument that the AVR has input protection diodes, but I made a device that sniffed 24 volt lines to see if they were on or off, and I grabbed the wrong diodes off the rack, got 24 volt zeners instead of 4.7 volt zeners (the part number on the reel was 1 number difference)

it lasted about 2 days before acting weird, then about a week later it was stone dead, kind of suprised it didnt sneak back up the ftdi cable and mess with the USB port

their toolset is not the worlds greatest and they like to nickel and dime you for hardware, but if your doing a TON of product it usually works out to be cheaper to use pic's

first you have to bootload it

http://arduino.cc/en/Tutorial/ArduinoISP

 lcd.print(x()/1000); //print x

is your problem

x() is not a function

or use minicom

 

Serial.print(F("your string here"));

you can run slow with 5 volts but you cant run fast with 3.3

what happens if you toss it in a loop and read back one char at a time without pcopy

not that it awnsers your question, but you could do

Serial.print(F(“Hello World”))

which is a function that puts its string into progmem

correct

if your timing was off a significant amount your monitor would not sync, or at least you would get wiggly text / pixels

the 25.175 is used as the dot clock and is divided by numbers for the sync, color is just an analog function that happens during the active video line and is not effected by timing

how much data we talking about here

its due to fire and flashover, I use it on occasion for low voltage stuff, but I am not going to trust some office tape on 220v