This shield can be used both to interface TTL circuits and microcontrollers. The resistor in series with the LED depends on the application, and the circuit can be used as both input and output shields, with the main feature being insulation.
This shield can be used both to interface TTL circuits and microcontrollers. The resistor in series with the LED depends on the application, and the circuit can be used as both input and output shields, with the main feature being insulation.
