All High

10 Responses to All High

1. Robert says:

   January 2, 2013 at 18:16

   does not work with leonardo …. some light’s not high. and not in correct order. 😦

   Reply
   • blinkenlightblog says:

     January 2, 2013 at 18:22

     I do not own a Leonardo. Can you please give a little bit more details such that I can investigate this? Maybe a picture?

     Reply
     • Robert says:

       January 2, 2013 at 18:28

       Sorry here! All lights high … https://twitter.com/hifigraz/status/286523857031012353
       and I think 16 and 15 are more 20 and 19 ….

       Reply
     • Robert says:

       January 2, 2013 at 18:47

       https://twitter.com/hifigraz/status/286528478252244992

       finally … counting from 1 to 20

       Reply
       • blinkenlightblog says:

         January 3, 2013 at 00:54

         Thanks for the video. This makes the issue crystal clear. I searched a little bit and found this one: http://provideyourown.com/2012/arduino-leonardo-versus-uno-whats-new/:

         The original 6 analog input pins have new digital pins mappings as well. They are:

         A0 – D18
         A1 – D19
         A2 – D20
         A3 – D21
         A4 – D22
         A5 – D23

         Since the original Arduino maps A0 to D14, A1 to D15 … A5 to D19 it follows that D14 … D17 are not connected to any LEDs of the shield. This explains the effect exhibited in your video. So you have to change your code to count 0, 1, 2, …, 12, 13, 18, 19, …, 23 instead of 0 … 19.

         Reply
     • Robert says:

       January 3, 2013 at 07:33

       hey thank you, that was fast 😉

       Reply
       • blinkenlightblog says:

         January 3, 2013 at 17:30

         Here is an example how such a mapping might be implemented. The led_to_pin() function does the trick.

         //
         //  www.blinkenlight.net
         //
         //  Copyright 2013 Udo Klein
         //
         //  This program is free software: you can redistribute it and/or modify
         //  it under the terms of the GNU General Public License as published by
         //  the Free Software Foundation, either version 3 of the License, or
         //  (at your option) any later version.
         //
         //  This program is distributed in the hope that it will be useful,
         //  but WITHOUT ANY WARRANTY; without even the implied warranty of
         //  MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
         //  GNU General Public License for more details.
         //
         //  You should have received a copy of the GNU General Public License
         //  along with this program. If not, see http://www.gnu.org/licenses/
         
         
         uint8_t led_to_pin(const uint8_t led) {
             return led<14? led: led-14 + A0;
         }
         
         void setup() {
             for (uint8_t pin=0; pin<20; ++pin) {
                 pinMode(led_to_pin(pin), OUTPUT);
             }
         }
         
         void blink(const uint8_t pos) {
             digitalWrite(led_to_pin(pos), HIGH);
             delay((sqrt(((float)20 - pos)/20) - sqrt((19.0 - pos)/20)) * 500);
             digitalWrite(led_to_pin(pos), LOW);
         }
         
         void loop() {
             for (uint8_t pos=0; pos<19; ++pos) {
                 blink(pos);
             }
             for (uint8_t pos=19; pos>0; --pos) {
                 blink(pos);
             }
         }
         

         Reply
2. Robert says:

   January 2, 2013 at 18:27

   Hi! Here https://twitter.com/hifigraz/status/286523857031012353 All Lights high example!

   Reply
3. Nickson says:

   February 16, 2013 at 12:03

   There was a little error in the comments of your code.
   Just right before the “setup()”

   Error:
   “// This sketch will set all outputs to low.”
   Should be:
   “// This sketch will set all outputs to high.”

   Made me confused for a moment.
   No big deal really. In fact, it’s a very small deal.
   But the correction makes your article more perfect! 🙂

   Reply
   • blinkenlightblog says:

     February 16, 2013 at 12:43

     Thanks for noticing this bug. I fixed it.

     Reply

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