Ultrasonic Distance Sensor: Difference between revisions
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*$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] | ||
=Links= | |||
*[[Ultrasonic Sensor Log]] | |||
Revision as of 01:32, 27 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
- Maxbotics - [1]. 2' has under 1% error.
- Sparkfun has them - [2]. Online chat at https://www.sparkfun.com/technical_assistance
- Banner Engineering - $121 - [3]
- Xenix - [4]
YouTube
- Ultrasonic sensor on plasma table - [5]
R&D
- From EMC list [6] - Banner Engineering sensor PDF - 1-11" range - [7]
- Making a better HC-SR04 distance sensor - Emil - [8]
Selection
- Maxbotics - 1 mm resolution options, not water protected - 12" minimum distance - $40 - [9]. Adafruit has it.
- Microptik - 3 mm resolution - http://www.micropik.com/PDF/HCSR04.pdf - 2-400 cm range - services@elecfreaks.com. Sample Arduino sketch - [10]
- HC-SR04 - appears to get 3 mm accuracy - [11]. Sparkfun has the sensor + code - [12]
- 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 - [13]
Sourcing
- VexIQ - sensor for robots - [14]
- 4-30 cm - $99 - [15]
- 1-100 inch - $25 - [16]
- $4 Sparkfun - 6"-10' - [17]
- $6 - .5 cm accuracy - [18]