Okay, I know this is a ridiculously newb question, you can be assured I am suitably embarrassed, but...
can someone please just confirm for me I'm connecting my bench supply correctly to my adafruit motor shield?
I'm using this supply:
I'm connecting the red positive post on the bench supply to the M+ marked screw terminal on the shield, and the black negative post on the supply to the shield screw terminal marked GND (next door to the M+). It all seems to be working fine, and my green power LED on the shield looks happy, and my motors are running okay so I think everything is hunky dory. But, I'm *very* new at this and would like to be sure...
Is that okay? I'm not supposed to be using the green GND post terminal there on the power supply? If not, why not, what's it for?
Thanks if you can help, apologies for the stupid question, I googled but couldn't turn up what I needed.
How to connect bench supply to motor shield (terminals)
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- Franklin97355
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Re: How to connect bench supply to motor shield (terminals)
http://www.ladyada.net/make/mshield/index.html
Mouse over the blue two pin connector in the lower left of the top picture.
Mouse over the blue two pin connector in the lower left of the top picture.
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Re: How to connect bench supply to motor shield (terminals)
Thanks for the reply. I've read the manual for the shield, I know those screw terminals are for the external power, it was the connection at my power supply that I was really asking about. Using the positive and negative post terminals and not the ground post.
- adafruit_support_bill
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Re: How to connect bench supply to motor shield (terminals)
You connections are correct. You also must make sure that the jumper next to the external power terminals is removed.
The green ground connection on your power supply is an earth ground. This may-or-may-not be the same ground as your Arduino, so you don't want to connect it. The negative terminal of the external power jumper is connected to the Arduino ground, so when you connect your bench supply, all voltages will be relative to the Arduino ground.
The green ground connection on your power supply is an earth ground. This may-or-may-not be the same ground as your Arduino, so you don't want to connect it. The negative terminal of the external power jumper is connected to the Arduino ground, so when you connect your bench supply, all voltages will be relative to the Arduino ground.
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Re: How to connect bench supply to motor shield (terminals)
That's great, thanks so much for the confirmation. Happy new year!
Please be positive and constructive with your questions and comments.