I have a wishlist of design mods that I would like to see for the
Waysmall and Gumstix boards that would make it more useful for me. I
don't own one of these cool toys (yet), and I'm not an electronics
hardware expert, so if I ask for something that just isn't feasible,
please let me know why.
First, expose the serial ports on the board using a connector similar to
the Hirose DF14, or maybe as large as the horizontal version of the
DF3. Go with the larger one if the height of the connector would not
rise above the height of the parent Gumstick. In the Waysmall, use
short cables that run from the board connectors to case-mounted serial
Rationale: This provides more flexibility for re-purposing of the board
while eliminating insertion and removal stresses on the fragile
The USB and power plugs look secure enough to me that I'm not worried
about breaking those, but I'm pretty leery of the existing serial
Second, add proper screw-holes on the Gumstix board itself, and use
screws + standoff spacers to mount the system board to the Waysmall
portboard. Size the spacers such that they don't add extra normal
stresses on the existing connector (this might be a little hard :/ ).
Rationale: I could be wrong, but it looks to me like the only component
holding the two boards together in the Waysmall system is the 60-pin
connector. If so, adding these hard-points would ensure that insertion
and removal of the MMC card would not place shear stresses on that poor
little 60-pin connector. Also, I'd like to use something more sturdy
than rubber bands to hold my Gumstick into place on whatever I decide to
do with it later.
Third (and again, please correct me if I'm wrong), it looks like the
Waysmall board is masking the connections for the pins that it isn't
using. If this is the case, please add solderable contact pads for all
of the pins that the Waysmall board isn't actively using.
Rationale: This way, you don't have to build a whole new board that
re-implements things the Waysmall board already gives you if you want to
add more stuff.
Fourth, is there any reason that the BTUART pins are not exposed on the
200-f and 400-f (the non-Bluetooth) products? Can you add them to the
Gumstix board and add the extra thingamajig that makes it RS-232
compliant to the Waysmall board (exporting the interface with one of the
small flat connectors as requested above)? You could use a bank of
jumpers or some other disconnect on the Waysmall that safely disables
this serial port when used with a Bluetooth-enabled Gumstick.
Rationale: I _really_ want a third RS-232 interface.
Fifth: Similarly, can you create an RS-232 interface from the IRUART?
I note from the pin-outs that it is missing two lines that the FF and HW
UART's have. If it is reasonably achievable, would you pretty please
add a fourth RS-232 this way?
Rationale: A fourth RS-232 interface would be a nice, but not essential
addition. If using the BTUART is out of the question, this would
provide the third RS-232 i/o connection.