Hi. I’m trying to build what I thought was a simple circuit, but it didn’t work the way I thought it would. I could use some advice please.
I want to use a digital output pin with two transistors to switch the power from one direction to another.
ie: I have two 10 led bar graphs. When the output pin is high, the power would flow to the green LED set. When the pin is low, power will stop going to green, and start going to red led set.
My attached schematic didn’t work though. I only have power going to green.
I’m guessing I need to add a resistor or two to help the transistors switch.
Don’t worry about resistors for the LED’s. They are irrelevant due to the constant current display driver chip I’m using to control the LED themselves. I just need this bit in order to get the power flowing to the correct set.
Thanks. I hope you understand what I’m asking.