Hi!
I have a board that connected to LCD (16x2) which I can control the backlight on and off. By pulling the white/red cable off from the board, I am no longer able to control the backlight but still able to display characters on the LCD screen.
Since I am not using the backlight of the LCD, I am thinking of adding other component such as 5V DC motor by utilizing the output voltage from the board (used to light up the backlight). However, the motor seems failed to function well. I am suspecting it could caused by low current supply from the board.
Thus, is there a way how I can amplify the current or should I add any component or circuit. Really appreciate if someone could share some advice. Thanks.