I fixed it!
The Leonardo uses pins 2&3 for I2C and the standard 'Hello World' sketch uses those pins for the LCD.
I moved the LCD to some higher numbers and it all plays nicely!
Thanks, all for your advice.
John
I fixed it!
The Leonardo uses pins 2&3 for I2C and the standard 'Hello World' sketch uses those pins for the LCD.
I moved the LCD to some higher numbers and it all plays nicely!
Thanks, all for your advice.
John