Yesterday I almost finished my car monitoring system including a NetMedia 16*2 LCD (Blue) and tested it for a period of 10 minutes.
During testing suddenly the NetMedia LCD's backlight brightness dropped considerably. >:(
Anyone experienced this before with these kind of LCD's?
I can't think of any way to fix it. It seems I need to buy a new module (but this will fail to in time?)
How did you wire it up? Normally LCD back light LEDs need a current limiting resistor at least.
I'm using a "ready for use" LCD board so I hope the current limiting resistor is already on the board.
I wired the backlight + to 12V+ (according to specs it allows +5V-+14V)
The controller is wired to +5V from arduino.
The strange thing however is that the backlight still works albeit very dimmed. Could it be so that it originally lit the LCD with two LEDs from which one broke down?
Or could the dimmed backlight be a result of a possible high current?
I'm using a "ready for use" LCD board so I hope the current limiting resistor is already on the board.
They are not normally like this they normally need a current limiting device like a resistor of current regulator.
Could it be so that it originally lit the LCD with two LEDs from which one broke down
It is possible although some LCD backlights are LEDs in series, it is possible some of them broke down but in a high resistance mode. That would explain what you are seeing.
When you get a new one check the current it is actually drawing against what you expect it to draw.
When you get a new one check the current it is actually drawing against what you expect it to draw.
Thank for your help! Will do that.