In the figure we have a basic shield circuit with TTL to TTL optical isolator. For the emitting LED the voltage can be different from 5 V.
This traditional configuration, found in other articles on the site, was published in a Poptronics of...
Found in American documentation from the 1980s, this circuit uses an ADC from that time, which is...
August 2016 - It can be obtained from Mouser Electronics the new temperature and humidity sensors from...