Thor, or should that be Zeus?

**m_c** · 12-08-2017

What probe did you buy?

One thing you'll need to check, is what voltage/current the probe is designed to work with. I made up a small interface board for my probe, so it was only switching the designed 5V, so I could use it to switch a 24V opto. Details can be found in this post over on the mach forum - http://www.machsupport.com/forum/ind...html#msg195436

**Chaz** · 12-08-2017

Originally Posted by m_c

What probe did you buy?

One thing you'll need to check, is what voltage/current the probe is designed to work with. I made up a small interface board for my probe, so it was only switching the designed 5V, so I could use it to switch a 24V opto. Details can be found in this post over on the mach forum - http://www.machsupport.com/forum/ind...html#msg195436

Two of these, almost a year ago, lol.

https://www.machsupport.com/forum/in...ic,5004.0.html

**Chaz** · 29-08-2017

So Ive bit the bullet and bought a 'proper' probe. Its mechanical, not electrical and I want to make an arm for it like the Datron has that comes down, probes and I can then move it back in the 'up' position when not needed. Thinking to use some form of offsets to make this work.

How do I manage with an arm to rotate 180 degrees? Arduino Uno and servo? Id need a fairly strong servo me thinks ....

Thoughts?

Click image for larger version.

Name: ProbeArm.PNG
Views: 481
Size: 68.2 KB
ID: 22695

**routercnc** · 29-08-2017

Originally Posted by Chaz

So Ive bit the bullet and bought a 'proper' probe. Its mechanical, not electrical and I want to make an arm for it like the Datron has that comes down, probes and I can then move it back in the 'up' position when not needed. Thinking to use some form of offsets to make this work.

How do I manage with an arm to rotate 180 degrees? Arduino Uno and servo? Id need a fairly strong servo me thinks ....

Thoughts?

Do you think it is possible to rotate about a hole/pin and get the repeatability ? How about sliding the arm up and down with a piece of spring steel to hold it against a ground edge? Could have a slot in the middle with a fixed dowel pin to give top and bottom end stops. Then add detents for top and bottom position. Manually move it up and down as required or drive it via a motor with a cam?

**Chaz** · 29-08-2017

Originally Posted by routercnc

Do you think it is possible to rotate about a hole/pin and get the repeatability ? How about sliding the arm up and down with a piece of spring steel to hold it against a ground edge? Could have a slot in the middle with a fixed dowel pin to give top and bottom end stops. Then add detents for top and bottom position. Manually move it up and down as required or drive it via a motor with a cam?

Well, I'm bad with this type of thinking. Datron have this on their machines (it pivots 180 down), so there must be a way but im not against it going up / down instead, anything I can look at on Youtube for inspiration?