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Power Supply: +5VDV, 15mA working current
Pins:
- VCC = +5VDC
- Trig = Trigger input of Sensor
- Echo = Echo output of Sensor
- GND = GND
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Minimum sensor recognition distance:> Sensor’s minimum-distance does not have to be much smaller than 20cm (8“). Infrared:
Pro: - Quality products comparatively cheap - In some cases very high resolution (up to 1 mm) Contra: - Problems with sun light - Problems with recognition of dark or black objects - Small range sizes
Recommendation after some research: Sharp GP2Y 0A02 (ca. $11, 20cm – 150cm Range, Analogue Output) http://acroname.com/products/SHARP-GP2Y0A02YK0F-IR-PACKAGE (see also: http://acroname.com/articles/sharp-infrared-ranger-comparison for comparison)
UltrasonicPro: - Not depending on optical properties of an object -> more reliable in common usage - Larger range sizes Contra: - Usually higher prize - Lower resolution (2-3 cm) - Problems detecting acoustic quieting objects
Recommendation after some research: Parallax PING Ultrasonic Sensor (ca. $29, 2cm – 300cm Range) https://www.parallax.com/product/28015 (maybe cheap replacement: http://www.dx.com/p/hc-sr04-ultrasonic-sensor-distance-measuring-module-133696?Utm_rid=37202148&Utm_source=affiliate#.VTsyqa3tmko) |
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