Page 160 - Programming the Photon Getting Started With the Internet of Things
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power pin and turning the output to HIGH, giving an output of 3.3 V; this also gives us a
stable voltage reading because it does not fluctuate like the 3.3-V pin does sometimes.
The hardware for this experiment is shown in Table 8.1 and the breadboard layout
diagram in Figure 8.1.
Figure 8.1 Breadboard layout diagram for the photocell.
