I asked a question about sinking and sourcing LEDs while using a darlington driver. The images were slightly unclear so i have redrawn it. I had too many LEDs in my circuit so i needed to create a relay. I am going to use a darlington driver and when i was testing it, i was fine with all other 7 outputs. However, I am unsure how to be able to sink and source LEDs from 1 output pin while using a Darlington driver
My project is a traffic light. I have 8 available outputs. I have 9 groups of LEDs. Currently there is 5v availible for the LEDs. The maximum number of leds per group is 8. I also have a loudspeaker and a motor in there. Please see comments for LEDs data sheet
That is the link for the Darlington Driver i am using which is represented by the 18 - DIL
Is it possible to sink and source at the same time with the driver?
I only have 8 outputs and i realised that either the green man or the red man can be on at the same time. So to maximise outputs i sunk the red LEDs and sourced the green LEDs. However, I realised i had too many LEDs to work with a 5v PIC, so i needed to create a relay