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I have an Arduino with a motor shield and I use it to power 4 different DC motors.
Motors are connected to the shield through a screw terminal.
Since I am in the prototyping step, I am moving them around a lot, connecting and disconnecting them all the time, which means screwing and unscrewing the wires every time.

I was looking for a jack, so I can easily plug in-out. I was going to use the standard 2.1 X 5.5 mm coaxial power connector, however I'm wandering if there is anything smaller.
The flowing power shouldn't be very intense, it's a 12v with a peak usage just little above 1A.

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    \$\begingroup\$ "clamp that tights the wires" sounds like a description of a screw terminal \$\endgroup\$ – Nick Alexeev Nov 18 '14 at 22:44
  • \$\begingroup\$ the standard 2.1mm jack is actually perfect for multiple insertions and 1A. What's not right about it? \$\endgroup\$ – Bryan Boettcher Nov 18 '14 at 23:01
  • \$\begingroup\$ they are big, or better, very long! the whole shield has the size of a credit card, female + male connector are the same size of 50% of the shield. there isn't anything smaller? \$\endgroup\$ – tampe125 Nov 19 '14 at 7:28
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You could try using spade terminals along with a spade terminal block (or better yet, make one using the reciprocal of your spade pairs)


(source: electronicplus.com)

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(source: alibaba.com)

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  • \$\begingroup\$ @Glorfindel Thank you for adding the citations for the images. That courtesy (and sometimes legal obligation) is often overlooked here. \$\endgroup\$ – Elliot Alderson Jan 16 at 17:48

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