Altmill SLB Sensor Issue

I almost have my Altmill working, after numerous issues with the assembly. The latest issue is that the Y2 sensor isn’t working.

I have tested each sensor by putting a metal object in front, and every sensors works when plugged into either the X, Y1 or Z plug on the SLB. However none of the sensors work when plugged into the Y2 plug.

Sounds to me like a dodgy plug for the Y2 sensor, does anybody have any other suggestions?

Hey Harry,

Numerous problems suck. When overcome they can give a feeling of “I AM THE KING OF THE WOOOOOORLD” (q carrey)

The y2 lim switch sounds indeed like the actual switch doesn’t get powered via its connector. This can be a bad soldering on that connector or something else further down the line.
If you have a universal measuring device, it should be easy to determine if there is any voltage available on the connector. The savest way to determin if power gets to the connecor is to switch off the slb, switch your multi to diode measuring and connect your probes to:

Between gnd on y1 and y2 connector. If it beeps, that line is good.
Now measure between vcc on both connectors. When beep, there should be power when the slb is switched on. It would however surprise me if power is available on that connector.

There is however a secondairy connector to connect a limit switch to y2. P17 has all the lim switch inputs. When you would connect gnd to y2 input on P17, you should see the corresponding led light up. If it does not the y2 input is compromised. If it does, you have an option to wire up your sensor via some make shift wires. Do not cut off the connector of the lim switch, because you are prolly gonna need to open a ticket and get a replacement slb.

This is only a temp solution, to bridge the time it takes for your replacement to arrive. That could take some time, -tarrifs, border delays sometinsometin-
This is only to maybe help you along to at least get your machine running to keep going forward.

Hope it helps.

Thanks very much for your detailed response, I’ll give this a try.