A MAX232 level shifter: Unterschied zwischen den Versionen
Dl8rds (Diskussion | Beiträge) |
Dl8rds (Diskussion | Beiträge) |
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| (16 dazwischenliegende Versionen desselben Benutzers werden nicht angezeigt) | |||
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| − | + | [[Image:LevelShifter.jpg|400px|right]] | |
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| + | I have built a level shifter...: | ||
* http://www.amateurfunkbasteln.de/rs232level_shifter/rs232level_shifter.html | * http://www.amateurfunkbasteln.de/rs232level_shifter/rs232level_shifter.html | ||
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| + | Some more information on similar projects: | ||
* http://www.compsys1.com/workbench/On_top_of_the_Bench/Max233_Adapter/max233_adapter.html | * http://www.compsys1.com/workbench/On_top_of_the_Bench/Max233_Adapter/max233_adapter.html | ||
* http://www.digisolutions.de/c5umbau/pegelwandler.html | * http://www.digisolutions.de/c5umbau/pegelwandler.html | ||
| Zeile 7: | Zeile 11: | ||
* http://www.digisolutions.de/c5umbau/pictures/Pegelwandler.png | * http://www.digisolutions.de/c5umbau/pictures/Pegelwandler.png | ||
| − | The building of the little device is finished, | + | '''ATTENTION''': The building of the little device is finished. Important: The pumping of the level shifter consumes a lot of energy, so it is definitely necessary to provide 3.3 V. There are MAX232 chips which work with 5V. They are not suited for this kind of project even if they are cheaper (1 Euro). The [http://produkt.conrad.de/45973183/max-3232-cse-16-so.htm 3.3V version chip (MAX3232)] costs about 5 Euro. Make sure you buy the 3.3V variant!! Thanks to Thomas Schäfer who gave this hint! |
| + | |||
| + | Credits: Michael Wöste, DL1DMW (find him at qrz.com), who has [http://www.amateurfunkbasteln.de/platinenservice.html provided the PCB for a very reasonable and fair price]. | ||
| + | |||
| + | The level shifter was meant to allow me to [[Flashing OpenWRT to the WRTSL54GS|flash my WRTSL54GS]]. See how the [[Connections between the MAX232 Level Shifter and the WRTSL54GS|level shifter is connected to the WRTSL54GS]] | ||
| + | |||
| + | BTW, here's an interesting alternative: | ||
| + | |||
| + | * http://www.lefinnois.net/wpen/index.php/2007/04/07/ | ||
| + | |||
| + | And I found that people sell these devices readily built at Ebay: | ||
| + | |||
| + | * http://stores.ebay.de/Electronic-Boards-and-Systems respectively, ask here: http://www.rss-systems.de/ | ||
| + | |||
| + | The level shifter [[Turn a Fonera router into a link station|has become part of my Fonera Link server]] | ||
Aktuelle Version vom 5. September 2008, 01:47 Uhr
I have built a level shifter...:
Some more information on similar projects:
- http://www.compsys1.com/workbench/On_top_of_the_Bench/Max233_Adapter/max233_adapter.html
- http://www.digisolutions.de/c5umbau/pegelwandler.html
- http://www.digisolutions.de/schaltungen/RS232_DL2RCG.pdf
- http://www.digisolutions.de/c5umbau/pictures/Pegelwandler.png
ATTENTION: The building of the little device is finished. Important: The pumping of the level shifter consumes a lot of energy, so it is definitely necessary to provide 3.3 V. There are MAX232 chips which work with 5V. They are not suited for this kind of project even if they are cheaper (1 Euro). The 3.3V version chip (MAX3232) costs about 5 Euro. Make sure you buy the 3.3V variant!! Thanks to Thomas Schäfer who gave this hint!
Credits: Michael Wöste, DL1DMW (find him at qrz.com), who has provided the PCB for a very reasonable and fair price.
The level shifter was meant to allow me to flash my WRTSL54GS. See how the level shifter is connected to the WRTSL54GS
BTW, here's an interesting alternative:
And I found that people sell these devices readily built at Ebay:
- http://stores.ebay.de/Electronic-Boards-and-Systems respectively, ask here: http://www.rss-systems.de/
The level shifter has become part of my Fonera Link server
