The transistors are driven by the output of a CD4094 which is 3-state. The easiest would be adding resistor common to all LEDs for sensing the current. But it has to be small.
What are the chances of a hang up in the PIC? The program is going to be quite simple. The PIC is going to be dedicated to the clock signal only.
What are the chances of a hang up in the PIC? The program is going to be quite simple. The PIC is going to be dedicated to the clock signal only.