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Printed Circuit Board
The TinyTrak3 printed circuit board (PCB) is double sided, silk-screened, and solder masked. There are 4 mounting holes
in the corners, and another mounting hole in the center.
If desired, 0.15 inch can be cut or sheared off each end of the PCB to allow an alternate case fitting.
Upgrading from an older TinyTrak
TinyTrak3 can run on the same circuit board as TinyTrak and TinyTrakII. Owners of these can upgrade to TinyTrak3
functionality by simply replacing the microcontroller with a TinyTrak3 chip, and using the TinyTrak3Config program.
Case
TinyTrak3 was designed to fit in a Serpac brand C6 plastic case (2 1/4" x 1 5/8" x 3/4"). Cases are available from
www.byonics.com, but the case must be cut by the owner. A nibbler, an Exacto knife, and a drill press all help with this
process. If 0.15 inch is cut off either end of the PCB before building, as shown above, the DB-9 connectors will fit inside
the case, as shown in the first and last images. If not, the DB-9 connectors will fit outside the case, as shown in the middle
image. If a non-transparent case is used, LED holes will need to be drilled, and the LEDs will need to be mounted a bit
higher on the PCB. There are 4 flanges on the case center post, which should be trimmed to allow the PCB to fit.
