|Copyright Rob Versluis and Peter Giling|
The total WIO idea has been spread out so far into a nice assortiment of modules.
But hat was all based on the Arduino family.
The new development of he Raspberry Zero, proves, that other producers can do the same
This unit uses the Raspberry Pi Zero as base, which makes it very compatible with the Arduino boards.
The unit was in principle developed to be used in G-track locs.
But doing that there is one thing that should be different.
The Zero takes a few seconds to start up, and a not very solid contact from the rails would cause
the loc to stop for a few seconds.
To avoid that , and also to avoid needing to really seriously clean the rails before we can play outside.
the decision was made to use a chargeable battery inside the loc
But a loc needs more than just motordrive.
The WIOPi-0 has several other controls on board.
This unit is one of the first that also needs SMD components.
WE tried to avoid that as much as possible, but speceially the A/D convertewr is
no longer in the market in DIL-16, so there was no choice at all.
But this type SO-16 is rather easy to solder with a steady hand and a good quality soldertool.