5.5.3 Rotary or wheel
A rotary is a set of contiguous capacitive electrodes.
Figure 10. Interlaced patterned rotary sensor with 3 channels / 3 electrodes
0.2 - 0.3 mm
0.2 - 0.3 mm
0.2 - 0.3 mm
Full band width 2.0 - 4.0 mm
Tooth pitch
2.0 - 4.0 mm
2 mm
LEGEND:
Via between layers
10 % meshed ground plane
Copper electrode
Table 9. Rotary sensor documentation gives a list of documents containing information about the rotary sensor.
Table 9. Rotary sensor documentation
Id
Title Chapters
UM1913
Developing applications on STM32Cube with
STMTouch® touch sensing library
Linear and rotary touch sensors
AN4312
Guidelines for designing touch sensing applications
with surface sensors
Rotary sensor
AN5105
Sensors
AN5105 - Rev 1
page 13/52
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