Difference between revisions of "MultiSerial Shield"
From Hackstrich
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* The NXP SC16IS752 chip is used, which gives 2 channels for ~$7. It needs 3.3v I/O and talks 3.3v RS232, so level shifters are needed. The I2C level shifter is a PCA9306 ($0.95 qty. 1), and the RS232 level shifter is a second-sourced TI MAX3232 in a SOT16 package ($1.70 qty. 1). | * The NXP SC16IS752 chip is used, which gives 2 channels for ~$7. It needs 3.3v I/O and talks 3.3v RS232, so level shifters are needed. The I2C level shifter is a PCA9306 ($0.95 qty. 1), and the RS232 level shifter is a second-sourced TI MAX3232 in a SOT16 package ($1.70 qty. 1). | ||
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| + | [[Image:MultiSerial_Shield_Schematic.png|thumb|MultiSerial Shield Rev. 1 Schematic]] | ||
[[Category:Current Projects]] | [[Category:Current Projects]] | ||
Revision as of 03:14, 12 December 2009
The Arduino MultiSerial shield will let the Arduino access two RS232 serial ports via I2C. It will have switchable 3.3v or RS232 levels. This project exists mainly as a debugging tool for networks of BlinkieBits, as (at least during BlinkieNet design/prototyping) it would be extremely useful to be able to receive debugging information from a whole network of BlinkieBits, rather than just one at a time.
- The NXP SC16IS752 chip is used, which gives 2 channels for ~$7. It needs 3.3v I/O and talks 3.3v RS232, so level shifters are needed. The I2C level shifter is a PCA9306 ($0.95 qty. 1), and the RS232 level shifter is a second-sourced TI MAX3232 in a SOT16 package ($1.70 qty. 1).
