ChApTEr 2 ■ hArdwArE for IoT SoluTIonSBetter still, TinyCircuits (http://tiny-circuits.com/), the maker of the TinyDuino, offers a growing
selection of modules to add to your tiny Arduino kit. There are modules for LEDs, Bluetooth, WiFi, real-time
clock (RTC), accelerometer, audio, dual seven-segment display, GPS, and even a micro-sized OLED screen.
With so many modules available, you can build a really powerful Arduino solution in a fraction of the size of
the normal Arduino boards.
Thus, the TinyDuino represents an excellent choice for solutions that need to be as small as possible.
I’ve seen these boards used in wearables,^5 inside small toys, and even in wristwatch-sized Arduino devices.
The small size and lower power make it ideal for hiding in small places.
You can find specific documentation for the TinyDuino at http://tiny-circuits.com/
tinyduino_overview.
SpikenzieLabs Sippino
The Sippino from SpikenzieLabs (www.spikenzielabs.com) can be used on a solder-less breadboard. It costs
less because it has fewer components and a much smaller footprint. Fortunately, SpikenzieLabs also provides
a special adapter called a shield dock that allows you to use a Sippino with standard Arduino shields.
Figure 2-8. TinyDuino terminal board
(^5) TinyCircuits also makes a LilyPad-compatible module line the size of a U.S. dime (ten-cent piece) called the TinyLily
(http://tiny-circuits.com/products/tiny-lily.html).