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here it is : C:\arduino-1.8.7\arduino-builder -dump-prefs -logger=machine -hardware C:\arduino-1.8.7\hardware -tools C:\arduino-1.8.7\tools-builder -tools C:\arduino-1.8.7\hardware\tools\avr -built-in-libraries C:\arduino-1.8.7\libraries -libraries C:\Users\kirikette\Documents\Arduino\libraries -fqb...

I use a third windows 7 PC (my daughter one) free of any software except avast and office to install Arduino IDE 1.8.7 from your link. I still have the same issue :( Nevertheless I'm starting a elearning course on C++ programming, I hope I will understand how to decode these fantastic libraries that...

It compiles with very less warnings, but LEDs are still always on. Here are the compile message : C:\Users\decraene\Google Drive\projets Arduino\7- heure & calendrier\HCDotMatrix_Example-v2\HCDotMatrix_Example-v2.ino: In function 'void loop()': C:\Users\decraene\Google Drive\projets Arduino\7- heure...

my Arduino IDE installations are basic from www.arduino.cc
May be it is missing a library to correctly decode yours ?

in fact it compiles but if the example program is running all leds are stuck bright. I know it's running because I put some Serial.println() to see. Nevertheless if it compiles in 1.6.13, I have the same kind of errors than in 1.8.6 which failed the compilation. Here are the 6 last lines of warnings...

Latest news :
I'm absolutely sure I have 'Arduino/Genuino Uno' selected as the board type
I confirm the program compiles right with Arduino IDE 1.6.13 on my windows 7 business PC, but failed with 1.8.6 on my windows 7 home PC.
Best regards

OK Andrew, surely you must be right, I will verify tonight as it was done on a home PC.

So I've just installed 1.6.13 Arduino IDE on my business PC - for an unknown reason 1.8.6 couldn't start - and it works.

Many thanks !

Hi Andrew, thank you for your help.
It is the 1.8.6 IDE version,
Arduino Uno,
Windows 7,

On the above message, I have only made a "verify" not a compilation with download to the board.
I will mostly use the setled function to build for instance an analog clock and a binary calendar.

Hi, what a fantastic way to be able to drive leds matrix easily without any max ic, but I have a problem, I would appreciate any help : In file included from C:\Users\isanaba-31\Documents\Arduino\libraries\HCDotMatrix\examples\HCDotMatrix_Example\HCDotMatrix_Example.ino:52:0: C:\Users\isanaba-31\Doc...