Enable pin

[animal14]

is there a enable pin on the Grblduino ? been staring at it for a while & don't see one
thanks
animal

[EccentricWorkshop]

What do you mean by enable pin? To enable what?

GRBL has a coolant enable which goes to the coolant terminal block. There is also a stepper enable/disable which is routed from the Arduino Uno pin to the stepper driver pin. It will controlled automatically by GRBL and your software. GRBL doesn't directly support a spindle enable function; if the spindle speed is set to 0, it is disabled by the nature of it.

See here for the pins GRBL uses: https://github.com/gnea/grbl/wiki/Connecting-Grbl

Edited to add: this is for the GRBLDuino Uno Shield. Six different products are available so it's important to get specific when asking questions and providing support.

[animal14]

I have the UNo shield , I'm trying to use TB6600 stepper drivers

[EccentricWorkshop]

The stepper enable pin is the top most pin on the left side of each stepper driver socket. It's shown on the schematic on the datasheet in each A4988 Carrier block.