Problem With CNC SHIELD V3.51 and 4 Module Relay for Spindle

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Andrez
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Joined: Tue Jun 13, 2017 3:23 am

Problem With CNC SHIELD V3.51 and 4 Module Relay for Spindle

Post by Andrez » Tue Jun 13, 2017 4:06 am

Hi, I have a problem With Spindle ON (M3) and Spindle OFF (M5)

Firsth the command is Spindle ON (M5) and Spindle OFF is (M3)
Second When I conect Arduino the relays is ON (SPINDLE ON), my Spindle is ON :(

How can solve this problem?

Relay type: https://www.sainsmart.com/4-channel-5v- ... logic.html
Arduino type: https://ae01.alicdn.com/kf/HTB1s8cgNXXX ... rduino.jpg
Link for video: https://youtu.be/t4C6V7Mc5vo

Bertus Kruger
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Location: Wellington , New Zealand
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Re: Problem With CNC SHIELD V3.51 and 4 Module Relay for Spindle

Post by Bertus Kruger » Thu Jun 15, 2017 7:03 pm

The latest version of GRBL uses PWM. This is to control spindle speed.

To enable the spindle, use the M5/M3 commands and then set the speed with S1000.

As for the relay, the relay has two options. Normally open and normally closed.

From the image below the centre wire to the relay is the common wire and all you need to do is swap the other wire the NO to work.

Image

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