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Difference: Rs232Converter (r2 vs. r1)
This is an RS232 converter for interfacing a PC with an Archos Jukebox (or any other device with a 3.3V serial port). It converts the PC serial port signals to 3.3V levels. The design is very straightforward, using a standard MAX3232 transceiver.
It takes its power from the DTR signal in the serial port, so the communication software in the PC must set the DTR signal ACTIVE for this to work. It might still not work on some laptops, that may have a weak driver for the DTR signal.
If your PC is a laptop or otherwise might risk having too little power in the serial port, it is also possible to take power from the USB port or another 5-10V source. Just remove the D1 diode and connect the power to the +5V and GND pads.
Schematic (big PNG 33kb) (PDF)
To make your life complete, here is are Linus' complete schematicscomplete schematics made in Eagle 4.08r2.
Archive: Rs232.zip Length Date Time Name -------- ---- ---- ---- 14175 03-26-02 11:13 eagle.epf 7588 03-06-02 16:28 gerber.cam 10271 03-06-02 15:32 linus.lbr 848 03-26-02 13:50 README 570 03-26-02 13:18 RS232 Converter.bom 13443 03-26-02 10:57 RS232 Converter.brd 187210 03-06-02 16:18 RS232 Converter.sch -------- ------- 234105 7 files
r2 - 22 Sep 2005 - 05:53:33 - LinusNielsenFeltzingRevision r2 - 22 Sep 2005 - 05:53 - LinusNielsenFeltzing
Revision r1 - 20 Sep 2005 - 16:17 - JonasHaeggqvist
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