US modules short distance, IR better for long distances but requires warm bodies to detect, not best say, for machine motion. Typically $20 complete ... need to write uC code to interpret results in some variants, others have analog outputs in voltage, choose your interface.
Sure. For example see the spec sheet of:
http://www.maxbotix.com/products/LV.htm
You can detect distance as analog output voltage of ~ 0.01Vdc per inch from the sensor. This gives a maximum range, within the sensor envelope of the example detector, of about 1 inch to 41 feet, in 1 inch increments. Below are the detection envelopes for various models of this vendor.
You can also use the module to take a digital PWM output to be interpreted by a uC of your choice, rather than using your uC internal ADC to interpret the Vdc, and avoid conversion errors.
To detect from 90, 180, and 360 degrees, simply add as many modules needed to 'broaden' the envelope or find a specific US detector with such a field. The graphic shows samples of the different dispersion patterns.
For longer distance ranging, laser ranging can interpret distance farther than US, but at higher cost.
http://www.bhphotovideo.com/c/product/611165-REG/Newcon_LRF_MOD2CI_LRF_MOD_2CI_Laser.html
The complete modules do a similar thing, depending on maker, but typically they output serial data that requires a uC or laptop to interpret the data and convert to range.
My error, I suggested IR detects farther I think IR is nearest, US intermediate, and laser the farthest.
Sure. For example see the spec sheet of:
http://www.maxbotix.com/products/LV.htm
You can detect distance as analog output voltage of ~ 0.01Vdc per inch from the sensor. This gives a maximum range, within the sensor envelope of the example detector, of about 1 inch to 41 feet, in 1 inch increments. Below are the detection envelopes for various models of this vendor.
You can also use the module to take a digital PWM output to be interpreted by a uC of your choice, rather than using your uC internal ADC to interpret the Vdc, and avoid conversion errors.
To detect from 90, 180, and 360 degrees, simply add as many modules needed to 'broaden' the envelope or find a specific US detector with such a field. The graphic shows samples of the different dispersion patterns.
For longer distance ranging, laser ranging can interpret distance farther than US, but at higher cost.
http://www.bhphotovideo.com/c/product/611165-REG/Newcon_LRF_MOD2CI_LRF_MOD_2CI_Laser.html
The complete modules do a similar thing, depending on maker, but typically they output serial data that requires a uC or laptop to interpret the data and convert to range.
My error, I suggested IR detects farther I think IR is nearest, US intermediate, and laser the farthest.
