Ultrasonic Distance Sensor: Difference between revisions
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*VexIQ - sensor for robots - [http://www.robotmesh.com/vexiq-distance-sensor?gclid=CMKUrNml3s4CFYGHaQoduNsEEw] | |||
*4-30 cm - $99 - [http://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Ultrasonic_Proximity_Sensors/18mm_Round,_400mm_Maximum_Sensing_Distance_(UK_Series)/UK6A-D1-0A?utm_source=google&utm_medium=product-search&gclid=CNHMntmD3s4CFQuLaQod-MkCMw] | *4-30 cm - $99 - [http://www.automationdirect.com/adc/Shopping/Catalog/Sensors_-z-_Encoders/Ultrasonic_Proximity_Sensors/18mm_Round,_400mm_Maximum_Sensing_Distance_(UK_Series)/UK6A-D1-0A?utm_source=google&utm_medium=product-search&gclid=CNHMntmD3s4CFQuLaQod-MkCMw] | ||
*1-100 inch - $25 - [http://www.robotmesh.com/vexiq-distance-sensor?gclid=COfEnNiD3s4CFQGsaQodUHsC1A] | *1-100 inch - $25 - [http://www.robotmesh.com/vexiq-distance-sensor?gclid=COfEnNiD3s4CFQGsaQodUHsC1A] | ||
*$4 Sparkfun - 6"-10' - [https://www.sparkfun.com/products/13959] | *$4 Sparkfun - 6"-10' - [https://www.sparkfun.com/products/13959] | ||
*$6 - .5 cm accuracy - [https://www.amazon.com/Arrela%C2%AE-Hc-sr04-Ultrasonic-Distance-Measuring/dp/B00KKKT7YK] | *$6 - .5 cm accuracy - [https://www.amazon.com/Arrela%C2%AE-Hc-sr04-Ultrasonic-Distance-Measuring/dp/B00KKKT7YK] | ||
Revision as of 05:03, 26 August 2016
Requirements
- 1mm accuracy optimal, 3 mm is absolute max
- Open source version of http://www.cnccontrols.com/thcontrol.asp - 20-250 mm range for pointing to metal, with no obstructions
Tech Support
- Sparkfun has them - [1]. Online chat at https://www.sparkfun.com/technical_assistance
YouTube
- Ultrasonic sensor on plasma table - [2]
R&D
- Making a better HC-SR04 distance sensor - Emil - [3]
Selection
- Maxbotics - 1 mm resolution options, not water protected - 12" minimum distance - $40 - [4]. Adafruit has it.
- Microptik - 3 mm resolution - http://www.micropik.com/PDF/HCSR04.pdf - 2-400 cm range - services@elecfreaks.com. Sample Arduino sketch - [5]
- HC-SR04 - appears to get 3 mm accuracy - [6]. Sparkfun has the sensor + code - [7]
- Video shows 15 cm measurement, with oscillation +- 1mm - and text says well within 2% accuracy. 2% of 15 cm is 3 mm - so this would do for measurements of torch height for 1/2" steel easily (12 mm thickness).
Comparisons
Explanation
- Nice video - [8]