I have a standalone Arduino using an ATTiny85 hooked up to a transmitter - see attached sketch.
On the data line (DAT) I don’t have a pull-down resistor (R3) installed at present.
So far it seems to work fine without R3 i.e. it only transmits when I trigger an input transmit signal.
What are the drawbacks, if any, of not installing R3?
Secondly, I want to add an LED.
I know option one will work, but to save a pin, is option 2 an acceptable method of connection? - the code will be adjusted accordingly of course.
Or will option 2 adversely affect transmissions?
I am open to any other suggestions for connecting the LED.