Follow along with the video below to see how to install our site as a web app on your home screen.
Note: This feature may not be available in some browsers.
Hi all,
I need your advice on something. May I know why do we need a 1kOhm resistor between a transistor and the output pin from a PIC? can it be any value?
The max allowed output current from a PIC is 25mA.
The PIC is made with High Speed Cmos (74HCxxx) so it will try to drive 60mA and blow up with out current-limiting.
There is a Mood Light project where the author did not use current-limiting resistors from the PIC to LEDs. The PIC got so hot that it failed or stopped.