Hi guys I am working on a house number sign made out of LEDs I have blue LED's and according to the LED Calc. here **broken link removed** it says that I should be using 470 ohm resistors if my supply is 12 volts and the diode forward voltage is 3.3 (3.3 is just a guess because the help button on the calc says blue is 3.3 I don't have the spec to the LED). So I just wanted to know instead of using 470 ohms can I use 530 - 540 because I'm actually being kinda cheap and that's all I have is 530's. will it make a huge difference if I go with a higher ohm? your guys help will be greatly appreciated.
Oh and if anyone lives in western Canada what is the best and cheapest place to buy electronic components from, internet or retail store?
Thank You
Oh and if anyone lives in western Canada what is the best and cheapest place to buy electronic components from, internet or retail store?
Thank You