JSimm
Backplane

Real Java
for the
real world
[Purchase JSimm Products]
JSimm is an open expansion system for
Systronix embedded Java and SimmStick systems

The JSimm backplane has six JSimm slots in a 100x100 mm (about 4 x4 inches) standard Euroboard form factor. JSimm is compatible with many versions of the SimmStick bus and can be used as a SimmStick backplane. The 100 x 100 mm size is compatible with common Lego® and Knex® structures, as well as many robotic platforms.

JSimm Backplane Documentation
JSimm Backplane schematic PDF (900 KBytes) The backplane provides six JSimm slots and an efficient switching power converter.
Description: The backplane is passive except for the switching regulator which provides 5 VDC to all six JSimm slots. The regulator accepts any 6-20 VDC unregulated or regulated input. For a raw power input we typically use our standard 12 VDC power cube as well as 12V sealed lead acid and 9.6 VDC R/C model NiMH battery packs. Paste jumpers (a blob of solder closes them) on the back of the board connect all the bussed signals together. These paste jumpers can be easily opened with a soldering iron and a bit of solder wick (use the 'no-clean' type) to isolate any signals on any JSimm slots from any others.

JSimm Backplane Photos
JSimm backplane top

Top photo. The power jack is in the center left with green screw terminals above it, also on the left edge.

Click the image to the left for a larger one.
JSimm backplane bottom

Bottom photo. Note the array of paste jumpers and silkscreen labels for everything. This much flexibility should enable you to do almost anything with a JSimm, JCX or SimmStick system.

Click the image to the left for a larger one.
 
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Java and all Java-based marks are trademarks or registered trademarks of Sun Microsystems, Inc. in the U.S. and other countries.
Systronix is independent of Sun Microsystems, Inc.
TStik, JStik, JCX, JStamp, JSimm, JDroid, and JRealTime are trademarks of Systronix, Inc.
1-Wire, iButton and TINI are trademarks of Dallas Semiconductor
Simmstick is a trademark of Dontronics
LEGO® is a trademark of Lego A/S, Denmark