PIC countdown timer
PIC 16F84A elapsed time counter on 4, 7 segment LED's
Fashing LED program for 16f877
Driving multiple bicolor LEDs in a matrix from and embedded controller
Using lookup tables to convert numbers to seven segment LED display patterns
Driving 8 or 9 7 segment displays with 8 or 9 io pins (and no extra circuitry)
Driving a bar graph display (up to 30 LEDs)
Area lighting with LED lightbulbs
General LED interfaceing
From the CHEAPIC tutorial:
PICList post "How to matrix bicolor LEDs?"
Hardware - The pin has a 470 ohm resistor and (Smurf-) blue LED to ground. Also a pushbutton switch and 10k resistor to V+.
What should happen:
What does happen:
I use the inverse (LED to vcc, push button low) of your circuit (with the extra resistor) on my graphic LCD checker:- http://ourworld.compuserve.com/homepages/steve_lawther/t6963tst.gif with no problems.
|file: /Techref/io/led/pic.htm, 4KB, , updated: 2012/4/30 14:10, local time: 2017/7/24 03:29,
|©2017 These pages are served without commercial sponsorship. (No popup ads, etc...).Bandwidth abuse increases hosting cost forcing sponsorship or shutdown. This server aggressively defends against automated copying for any reason including offline viewing, duplication, etc... Please respect this requirement and DO NOT RIP THIS SITE. Questions?|
<A HREF="http://www.piclist.com/techref/io/led/pic.htm"> Interfacing LEDs to PIC microcontrolers</A>
|Did you find what you needed?|
PICList 2017 contributors:
o List host: MIT, Site host massmind.org, Top posters @20170724 RussellMc, Van Horn, David, IVP, James Cameron, Sean Breheny, alan.b.pearce, Neil, Bob Blick, David C Brown, Denny Esterline,
* Page Editors: James Newton, David Cary, and YOU!
* Roman Black of Black Robotics donates from sales of Linistep stepper controller kits.
* Ashley Roll of Digital Nemesis donates from sales of RCL-1 RS232 to TTL converters.
* Monthly Subscribers: Gregg Rew. on-going support is MOST appreciated!
* Contributors: Richard Seriani, Sr.
Welcome to www.piclist.com!