Just add a transistor or a mosfet to drive more current.
Most of these LCD1602 will draw around 25ma to drive the backlight LED.
Put the anode of the LCD1602 led light to 5V and the cathode to the collector/drain. For the transistor don't forget to limit the base current using a resistor.
It is possible to use I2c 3.3v to 5V mosfet converter to make thing simpler for you. These adapters use the mosfet.
check on the web for I2c 3.3V to 5V adapter.
Once it is done you just need to set PWM on the gpio.
Don't forget to limit the backlight current also using a resistor to not burn the LED backlight.
Most of these LCD1602 will draw around 25ma to drive the backlight LED.
Put the anode of the LCD1602 led light to 5V and the cathode to the collector/drain. For the transistor don't forget to limit the base current using a resistor.
It is possible to use I2c 3.3v to 5V mosfet converter to make thing simpler for you. These adapters use the mosfet.
check on the web for I2c 3.3V to 5V adapter.
Once it is done you just need to set PWM on the gpio.
Don't forget to limit the backlight current also using a resistor to not burn the LED backlight.
Statistics: Posted by danjperron — Mon Nov 11, 2024 4:50 pm