I would like to control 50 LEDs using uC. LEDs are designed to show 5 different symbols each used 10 LEDs.
The uC output is 5V but the external battery that I wanna use it 12V. So I need something in between to control.
1)What should I use in between?
I have tried to use 2N3904 BJT to control the LEDs, but I found out my connection is something wrong.
I have used the external 5V instead of uC output for testing.
Please Help.
--Rex--
The uC output is 5V but the external battery that I wanna use it 12V. So I need something in between to control.
1)What should I use in between?
I have tried to use 2N3904 BJT to control the LEDs, but I found out my connection is something wrong.
I have used the external 5V instead of uC output for testing.
Please Help.
--Rex--