Asked
— Edited
the signal ports on the ez-b4 ,does that give volt?.when i see the tutorial from the leds, i see they are connected to gnd and to signal ports. blush
the signal ports on the ez-b4 ,does that give volt?.when i see the tutorial from the leds, i see they are connected to gnd and to signal ports. blush
@nomad here is the topic
@Purple, by all means run your LEDs without resistor however I will always advise to correctly calculate the resistor for driving LEDs which have forward voltage of less than +5V.
The reason I always advise a resistor is purely and simply because I have burnt up some LEDs which were powered via the signal pin of the EZ-B V3. Nothing says more about requiring a resistor than a burnt out LED in my opinion. On the flip side, I have also run LEDs from the signal pin without issue. To save burning out any more LEDs I have since used and advised the use of a resistor, the cost of the resistor is next to nothing (literally, it's less than 1p for a resistor!).
yes i understand the tutorial.but i will use some 20 leds for my project. 5 volt leds are great good link.
thanks averyone.