i will try to allow you to understand my problem.
A couple of months ago all was well with my ide 1.8.5
Code would compile and of course upload to pro mini.
Firstly, all code had errors to the effect my 'LiquidCrystal_i2c.h ' file seemed corrupt as it returned the message 'POSITIVE was not declared in this scope", so researched and found a new liquidcrystal library and got that solved.
Going ahead I get this error code,
Arduino: 1.8.5 (Windows 10), Board: "Arduino Pro or Pro Mini, ATmega328P (5V, 16 MHz)"
c:\program files (x86)\arduino\hardware\tools\avr\bin../lib/gcc/avr/4.9.2/../../../../avr/bin/ar.exe: unable to rename 'core\core.a'; reason: File exists
Multiple libraries were found for "Wire.h"
Used: C:\Program Files (x86)\Arduino\hardware\arduino\avr\libraries\Wire
Not used: C:\Users\Carolyn & Doug\Documents\Arduino\libraries\Wire
Multiple libraries were found for "RTClib.h"
Used: C:\Users\Carolyn & Doug\Documents\Arduino\libraries\RTClib
Not used: C:\Users\Carolyn & Doug\Documents\Arduino\libraries\RTClib-master
exit status 1
Error compiling for board Arduino Pro or Pro Mini.
This report would have more information with
"Show verbose output during compilation"
option enabled in File -> Preferences.
I followed the trail down \tools\avr\bin..and i get lost
following attachment is the code I am using.
thanks Doug
aug_16_1307_hot_water_timer.ino (7.82 KB)