# Emergency stop input, Suggested addition to future update

**URL:** <https://forums.maslowcnc.com/t/emergency-stop-input-suggested-addition-to-future-update/1721>\
**Category:** Software\
**Created:** [January 1, 2018, 4:49am UTC](https://forums.maslowcnc.com/t/emergency-stop-input-suggested-addition-to-future-update/1721 "2018-01-01T04:49:57Z")\
**Posts on this page:** 2\
**Page:** 1

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**Author:** ![dsfrobots](https://avatars.discourse-cdn.com/v4/letter/d/a3d4f5/32.png) [@dsfrobots](https://forums.maslowcnc.com/u/dsfrobots)\
**Post date:** [January 1, 2018, 4:49am UTC](https://forums.maslowcnc.com/t/emergency-stop-input-suggested-addition-to-future-update/1721/1 "2018-01-01T04:49:58Z")

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If this doesn’t exist yet,

Would be nice to include an input pin on the shield ( maybe a terminal connection on rev’d shields ) for an emergency stop button. I might even expand on that idea with my system to have certain limit type switches around workspace, or overforce type switch on sled chain connections.

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**Author:** ![Bee](https://yyz1.discourse-cdn.com/flex031/user_avatar/forums.maslowcnc.com/bee/32/2160_2.png) [@Bee](https://forums.maslowcnc.com/u/Bee)\
**Post date:** [January 1, 2018, 5:01am UTC](https://forums.maslowcnc.com/t/emergency-stop-input-suggested-addition-to-future-update/1721/2 "2018-01-01T05:01:51Z")

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@dsfrobots

See:

> [@Hardware "STOP NOW" button?](https://forums.maslowcnc.com/t/hardware-stop-now-button/444):
>
> Another suggestion for using one of the Aux pins. When my Maslow messes up, it’s usually because the chain fouled and gets tangled in itself. When this happens, I need to do three things. Stop the chain from getting worse hit the “Hold” button (but the machine keeps going until the end of the current command) Stop the router from cutting while it’s out of position. This requires me to be in three places at once. Could we wire up a hardware button (BIG RED button, preferably :P) to immediat…

> [@My Maslow control enclosure (with Pics)](https://forums.maslowcnc.com/t/my-maslow-control-enclosure-with-pics/1134):
>
> I have made a box to hold all the electronics for my Maslow. It contains 3 PSU’s (5V, 12V & 48V) Arduino & Maslow Board Raspberry Pi 3 with Touch screen LCD Spindle Controller with switches Emergency stop for Motors and Spindle Here are some pictures Please let me know if you would like a detailed write up with schematics and CAD? (No points spending a few hours if nobody is interested…)

I know there is a picture of a power cutoff button mounted on a Maslow in the upper left corner.

You are much better off killing power to everything then asking software to perform some function. You don’t know if the emergency is caused by a failure in the software.

Thank you