When I removed the resistor from the circuit the range is much better but I'm worried about having that as a permament solution
the nano doesn't even produce the ma's of the max ma on the LED.
Im not sure I quite understand how it is i risk frying either if the led is rated 50ma but the ardiuno only provides 40ma.
So, the led takes 50ma regardless, the arduino is only safely capable of providing 40ma and the resistor ensures that only 40ma is given to the led? Is that correct?If so, using another pin on the nano could i provide an extra 10ma to the led safely too? Also, that said should i be calculating the resistor value at 40ma and not 50ma? As that is the value i calculated the resistor at, but i think after this new info i may have calculated wrong too.Also, im not saying i dont believe anyones answers im just trying to wrap it around my head and asking about other possibilities i won't be using a second power supply so either i will just have to deal with low range or try alternative setups maybe the transistor idea if i can somehow split the power between 2 pins to provide the max power to the led.
I am trying to send IR signals using an arduino nano. I have got it all working, it sends signals fine, the device picks up the signals fine, my only issue is range.I had calculated the resistor I needed through a calculator site for it and everything works great, just the range is the issue. When I removed the resistor from the circuit the range is much better but I'm worried about having that as a permament solution as everywhere tells me I need to use one but then I looked at some of the outputs of the nano and checked against the LED and found that the nano doesn't even produce the ma's of the max ma on the LED. So I was hoping someone could confirm if I can use the LED without a resistor. Im using a nano, it also has a radio reciever module on it too and an IR LED with the following stats:- Forward Current: 50 mA- Forward Voltage: 1.2V- Max Forward Voltage: 1.6VI was hoping that the fact the duration of the LED being on would be milliseconds occasionally might be ok enough to run without a resistor too. Could someone please let me know on their thoughts of this or if there are any better LEDs to use for this with better range.Thanks
So, the led takes 50ma regardless, the arduino is only safely capable of providing 40ma and the resistor ensures that only 40ma is given to the led? Is that correct?