2,5m cable too long for LCD connected to Arduino UNO? So i got that 2,5m cable wired with the LCD and the arduino, but i keep getting those weird characters showing up on the LCD. Clearly there is a signal loss between the components but there has to be a solution to the problem. Perhaps by connecting capacitors/resistors to the wires will help? Is there any solution other than not using this long cable?
If the interface you're using is I2C(only two cables from arduino to lcd, vice versa)you have a problem,you need to pull up the sda-scl channel with appropriate resistors, you could (maybe) boost the I2C signal using ti-p82b715 bus extender, I just assume you use I2C (2,5m length?), what interface do you use? SPI? I2C?