originally I opened a discussion here where there is the link and some details on my laser and on my first test.
Exactly I plus +, ground (red and black for instance) that provide 12v laser
and the TTL cable that consists of only one wire.
I in fact wondering why in the Leo69 guides the laser has TTL + and TTL-
Unfortunately I do not have schemes and the seller can not provide me more info on the laser.
If the guide is equal to the negative of the TTL- then I should fix fueling 12v the laser ramps (type D8 heated floor) … by doing so the negative is already common and I do not take it on board …
I do not know if I managed to make myself understood …