This is my third topic about same project but different subjects.
I am stucked on my project which will e-mail me, when 10 200L barrels were not changed for a certain time.
Arduino Mega 2560+ethernet shield +SD+ DS1307 ----> Master
Arduino Uno+lcd keypad shield ----> Slave Which are connected to each other via i2c.
Overlapping pins were arranged. Every component works with no problem except retouches and delay settings.
Now i need to see them from lcd keypad on slave Uno.
Gammon Forum : Electronics : Microprocessors : I2C - Two-Wire Peripheral Interface - for Arduino was really educational, however i need datas FROM master TO slave for printing. I have a sensor array which holds states of 10 digital pins. I need to use those states on slave.
https://www.arduino.cc/en/Tutorial/MasterWriter was also good ref, however i need to carry 10 digital inputs to another.
Thank you for these codaghetties from now…
Master.ino (10.4 KB)
SLAVE.ino (2.83 KB)