I'm working on a prototype with a Particle Photon, but I've realized the required number of pins is bigger than the number of pins on my photon.
I thought I could have an Arduino Uno wired to some sensors, and link the Arduino to the photon via a Software Serial from the Arduino (as its serial pins will already be busy) to the Serial pins of the photon.
Is it possible, and is there a better way to solve my problem?