Page 199 - Robots Androids and Animatrons : 12 Incredible Projects You Can Build

brackets
Wire Upper
Brass
6-32 nut
6-32 nuts
Robot
Base base

Plastic 6-32
machine
screw
8.11 Side dimensional detail (robot base side of the tilt switch) of
plastic screw with top brass nut

178

8.12 Close-up photograph, detailing tilt switch and spring mounting
of upper bracket

shelf for mounting the photoresistor (see Fig. 8.13). I used a small
piece of plastic to mount the photoresistors at a 45 degree angle up
with an opaque vane mounted in between the photoresistors (see
Fig. 8.14). Mounting the photoresistors on the drive wheel assembly
keeps the sensors pointing in the same direction as the drive wheel.
This replicates the function of the original tortoise robots.
Using two CdS photosensors in this configuration alleviates much
of the computation needed to track a light source. This is the same
Team LRN
Chapter eight