| ??? 02/29/08 18:20 Read: times |
#151685 - 485 will be fine, I suggest LT1785 Responding to: ???'s previous message |
on all wires I get square waves from 0 to 5 VDC
485 will be fine, I suggest LT1785, that is the "industrial strength" 485 transciever, It will take a lot of abuse. Remember that a, and a' or whatever are used in any way anyone want make sure you get the polarities right, sepecially if you connect to an interrupt pin. Coming to think of it, I do not think it matters, I believe the only effect of a reversed polarity (as long as it is for both) will be a reversal the fwd/reverse bit in the code and any uC can handle that. If the distance is more than a few meters, DO terminate the bus. Erik |
| Topic | Author | Date |
| Quadrature Encoder interfacing | 01/01/70 00:00 | |
| Use interrupt | 01/01/70 00:00 | |
| it does NOT work | 01/01/70 00:00 | |
| 'differential' is more than obe thing | 01/01/70 00:00 | |
| Why does clock/direction fail ? | 01/01/70 00:00 | |
| I got it ..... | 01/01/70 00:00 | |
| a quadrature detector .... | 01/01/70 00:00 | |
| Possibly differential | 01/01/70 00:00 | |
| if so, then datasheet would be needed or | 01/01/70 00:00 | |
| Datametrics | 01/01/70 00:00 | |
| need that scope picture (description) | 01/01/70 00:00 | |
| Decoder timing diagram | 01/01/70 00:00 | |
| Scope Waveforms | 01/01/70 00:00 | |
| 485 will be fine, I suggest LT1785 | 01/01/70 00:00 | |
| My original question | 01/01/70 00:00 | |
| Encoders With Differential Outputs | 01/01/70 00:00 | |
| IC Chip Decoder Solutions | 01/01/70 00:00 | |
Project details | 01/01/70 00:00 |