| Ellappan Varadharaj 11/29/08 19:14 Read: 151 times Salem, Tamilnadu India Msg Score: -1 -1 Didn't Search First |
#160425 - doughts in Infra Red LEDs |
hai,
i want to do attendance system using IR with 8052 microcontroller. i dont know whether IR works at different frequency . but, how can i do that with IR LED and using photodiode. |
| Topic | Author | Date |
| doughts in Infra Red LEDs | Ellappan Varadharaj | 11/29/08 19:14 |
Research the field | Michael Karas | 11/29/08 20:05 |