Hi to all on the forum,

I've had a gen3 endstop fail on my printer. Looks like the emitter blew.

I've taken a look at the wiki which said that with appropriate wiring, a gen 7 endstop can be used in place. It looks to have the same components as the 2.1 opto but I don't want to fry anything else whilst changing it over.

I can't find any details on what the appropriate wiring is.

can anyone point me towards where this information can be found.

Thanks,

Raj

Not quite what you wanted but it might help.

I just replaced my mechanical stop on the Z axis with an opto one.
I couldn't source the 2.1 parts (not at the prices I was prepared to pay anyway) so I got an opto interrupter from ebay.
Anyway attached is my circuit which works ok.
The out wire goes to the signal input on the sanguinololu, the +5v goes to the +5v line not the +v on the board.
Also attached is sketchup file of housing, I have since modified the clamp part.

Hi Glyn,

Thanks for the information. I'm not the best electronics person out there so it will take a while for me to interpret the circuit diagram you attached.

I placed a post on the electronics forum (http://forums.reprap.org/read.php?13,134236) and just updated it with some findings.

With the help of anouther RepRapper (Traumflug), it was confirmed the Gen6/7 opto can be used in place of the v2.1 opto.

There are some changes to wirinng which are needed, nothing major but i have placed some details on the post.

Thanks

Raj