I am making an Arduino Stopwatch, I have researched about this and found a circuit diagram that i could use on youtube. i have connected my Arduino up to how that diagram looks and I have programmed it witht the code the video gave me. The problem is that it doesnt work so I got in touch with someone that knows a lot of technical information. This is what i got back from him "Quiet A bit of info via our morning net.. (1) The voltage from the 10k pot to the screen in very critical and needs careful setting. (2) It’s possible an I2C bus is used between the arduino and the lcd in which case you need to get the correct lcd address to make it receive the arduino output. (3) It is possible to fit a link that gives 3 addresses to chose from.(4) if the back light LED switches on and off during the switch on boot up it’s an indication that the software is working. Note some backlight LEDs are wired from the 5v supple so won’t flash. Hope this helps." I have checked this email with my product. There is nothing wrong with (1) because when the potentionometer is turned or the button is pressed there is a change in display. (4) also works. I am not sure about (2) and (3). I am using the arduino starter kit to make this. Would anyone be able to give me any information on an LCD address?
