Jump to content
Search In
  • More options...
Find results that contain...
Find results in...

current from gio pins on stm32 discovery and digtal pwm

Recommended Posts

hi was was looking at a raspberry pi gio pins

with a single led on the gnd and gio + pin

and was thinking we get red leds light up only when we dont use any 5volt

power pack plus the led that flashes when you flash the firmware

also makes the leds on the panels blink slighty dim

wondering i resistors could of been used to take down the red pwm


  • Resistor for Red: (3.3v – 2.0v) / .02A = 65Ω
  • Resistor for Blue: (3.3v – 3.2v) / .02A = 5Ω
  • Resistor for Green: (3.3v – 3.2v) / .02A = 5Ω




Edited by psmmacker
New update

Share this post

Link to post
Share on other sites

Create an account or sign in to comment

You need to be a member in order to leave a comment

Create an account

Sign up for a new account in our community. It's easy!

Register a new account

Sign in

Already have an account? Sign in here.

Sign In Now

  • Create New...