| ??? 04/13/07 14:16 Read: times |
#137166 - About the 1-wire Christmas tree... Responding to: ???'s previous message |
Jan Waclawek said:
what was the 1-wire receiver at the tree end?
It's a DS2408 8-Channel Addressable Switch: http://www.maxim-ic.com/quick_view2.cfm/qv_pk/3818 Each channel of the DS2408 drives a ZTX300 transistor which, in turn, switches a string of 5 LEDs. Could you give more details? As previously mentioned, this is controlled by a Philips (now NXP) 'LPC932 - in fact, it's a Keil MCB900 dev board: http://www.keil.com/mcb900/ This has the 1-Wire master routines, and just sends random numbers to the Tree end - giving a pretty, multicoloured twinkly effect on the LEDs on the tree! Of course, it'd be a whole lot easier just to have the MCB900 at the tree, and drive the LEDs direct - but that's not the point. |
| Topic | Author | Date |
| dallas one wire : working range ? | 01/01/70 00:00 | |
| Nothing exact, but | 01/01/70 00:00 | |
| a rough translation from our local hw mailing list | 01/01/70 00:00 | |
| they quote 750 meters | 01/01/70 00:00 | |
| EMI | 01/01/70 00:00 | |
| Head end ? | 01/01/70 00:00 | |
| App Notes | 01/01/70 00:00 | |
| Specifically | 01/01/70 00:00 | |
| I had trouble with <3m! | 01/01/70 00:00 | |
| You must be doing it wrong! | 01/01/70 00:00 | |
| 1-wire Christmas tree? | 01/01/70 00:00 | |
| About the 1-wire Christmas tree... | 01/01/70 00:00 | |
| how fast? | 01/01/70 00:00 | |
| ZTX | 01/01/70 00:00 | |
| Funny you should say that... | 01/01/70 00:00 | |
| Relics | 01/01/70 00:00 | |
I've got some OC71s somewhere, too...! | 01/01/70 00:00 | |
| Tried the fet interface... | 01/01/70 00:00 |