Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Dave Cole
On 1/24/2018 7:38 PM, Chris Albertson wrote: On Wed, Jan 24, 2018 at 4:06 PM, Dave Cole wrote: That is likely an unshielded prox switch. That means that the sensing pattern is a blob that sits right at the base of the plastic tip, not above it. That means that they can also sense to the side

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Chris Albertson
On Wed, Jan 24, 2018 at 4:06 PM, Dave Cole wrote: > That is likely an unshielded prox switch. That means that the sensing > pattern is a blob that sits right at the base of the plastic tip, not > above it. > That means that they can also sense to the side of that plastic tip as > well. You ne

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Dave Cole
That is likely an unshielded prox switch.  That means that the sensing pattern is  a blob that sits right at the base of the plastic tip, not above it. That means that they can also sense to the side of that plastic tip as well.   You need to be careful that you don't have any metal next to the

Re: [Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread John Alexander Stewart
Interesting - thanks, and tell us how you get on with them. John. -- Check out the vibrant tech community on one of the world's most engaging tech sites, Slashdot.org! http://sdm.link/slashdot _

[Emc-users] non-contact position sensors, surprisingly good performance.

2018-01-24 Thread Chris Albertson
An interesting you tube video by "Tom's 3D". He talks about 3D printers but much of the technology applies to machine tools. After all they both run G-code. In this video he measures the accuracy of end-stop or "home" sensors and compare microswitches, with and without levers and also varies kin