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Breadboard and Custom Interfaces
The extension board features a breadboard that can be used to realize simple interfaces to
custom sensors and/or other peripherals that may be controlled by the TinyNode module. It is
a field of pads with standard 2.54mm pitch that has on one side 14 pads connected to
different TinyNode I/O’s and on the other side 12 pads connected to the 20-pin extension
connector. Simple interface electronics can be soldered on the unconnected pads between
those rows. The 8 remaining pins on the extension connector are “hardwired” to realize a
simple interface without soldering any components. Depending on the number of pins used, a
smaller connector can be soldered instead of the 20-pin connector.
Since some of the pins are shared with other electronics (see diagram below), care must be
taken in order to ensure that the additional electronics does not interfere.
14 pads routed to
TinyNode
unconneted
12 pads routed to
extension connector
Pin[9..20] from breadboard
Pin[1..8] from TinyNode
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