
Temperature Sensors
Page 30
TEMPERATURE SENSORS
1-W
IRE
B
US
The GEM reads temperature using a “1-Wire” bus network. This system requires only three wires to address many
temperature sensors connected to a common line (see diagram below). The GEM design accommodates up to eight
sensors.
C
OMPATIBLE
S
ENSORS
The GEM can accept the following two very common temperature sensors:
1.
DS18B20
2.
DS18S20
These are both very common and low cost. The DS18B20 is the most popular type.
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