ChApTEr 2 ■ hArdwArE for IoT SoluTIonSWhat I like most about the Redboard is it is a bit cheaper than the Arduino-branded boards and is
readily available from Sparkfun. Better still, Sparkfun stocks a number of shields and accessories that
complement the Redboard. In fact, Sparkfun has an excellent kit called the Sparkfun Inventor’s Kit
(http://sparkfun.com/products/12060) that help you learn about Arduino programming and building
circuits.
■Tip If you have friends and family interested in learning more about Arduino, the Sparkfun Inventor’s Kit
would make an excellent gift.
You can find specific documentation for the Sparkfun Redboard at https://learn.sparkfun.com/
tutorials/redboard-hookup-guide.
TinyCircuits TinyDuino
The TinyDuino is an interesting diversion from the standard Uno physical layout. As the name suggests, it
is a small board. In fact, it is only slightly larger than a U.S. quarter!^4 As you can see in Figure 2-7, the main
board (center bottom) is about 21×21mm. That’s small.
Figure 2-6. Sparkfun Redboard
(^4) Or as my grandmother used to say, “A twenty-and-five-cent piece.”