| ??? 07/11/04 10:06 Read: times |
#73975 - RE: Opto-isolators on external interrupt Responding to: ???'s previous message |
How HAVE you connected them ? They need at the very least a resistor in the collector lead, or the emitter lead. Then they MUST be passed through a schmitt trigger, like a 74HC14 to clean them up and generate a good edge.
Steve |
| Topic | Author | Date |
| Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| We have too little information!! | 01/01/70 00:00 | |
RE: Opto-isolators on external interrupt | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 | |
| RE: Opto-isolators on external interrupts | 01/01/70 00:00 |