| ??? 12/03/11 00:50 Read: times |
#184999 - Parallel port |
Trying to construct a pc controlled home automation system. Is it posible to power the opto-coupler (4n35) from the data pins n what value of limiting resistor can be used to limit the current being drawn from the port? Also for connection to the opto coupler a output, is 4.7k a safe value? |
| Topic | Author | Date |
| Parallel port | 01/01/70 00:00 | |
| Can you show a schematic? | 01/01/70 00:00 | |
| Why the parallel port? | 01/01/70 00:00 | |
Parallel IO from USB | 01/01/70 00:00 |