Ultrasonic Distance Sensor: Difference between revisions
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=Tech Support= | =Tech Support= | ||
*Sparkfun has them - [https://www.sparkfun.com/categories/84]. Online chat at https://www.sparkfun.com/technical_assistance | *Sparkfun has them - [https://www.sparkfun.com/categories/84]. Online chat at https://www.sparkfun.com/technical_assistance | ||
*Banner Engineering - $121 - [http://www.plccenter.com/Shop/BANNER%20ENGINEERING/S18UBAQ/USPP?source=GoogleShopping&IgnoreRedirect=true&gclid=CO2y_4is3s4CFQuNaQod8TsBEw&kwid=productads-adid^113089519769-device^c-plaid^93272993125-sku^15000003399-adType^PLA] | |||
=YouTube= | =YouTube= | ||
Revision as of 05:28, 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
- Banner Engineering - $121 - [2]
YouTube
- Ultrasonic sensor on plasma table - [3]
R&D
- From EMC list [4] - Banner Engineering sensor PDF - 1-11" range - [5]
- Making a better HC-SR04 distance sensor - Emil - [6]
Selection
- Maxbotics - 1 mm resolution options, not water protected - 12" minimum distance - $40 - [7]. Adafruit has it.
- Microptik - 3 mm resolution - http://www.micropik.com/PDF/HCSR04.pdf - 2-400 cm range - services@elecfreaks.com. Sample Arduino sketch - [8]
- HC-SR04 - appears to get 3 mm accuracy - [9]. Sparkfun has the sensor + code - [10]
- 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 - [11]