Comments on: The controversial RJ45 power connectors and some big wheels http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/ drawing by robot Mon, 14 May 2018 00:33:14 +0000 hourly 1 https://wordpress.org/?v=4.9.7 By: sandy http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/#comment-912 Thu, 08 Mar 2012 15:08:15 +0000 http://www.polargraph.co.uk/?p=329#comment-912 The spools are inside this: http://www.argos.co.uk/static/Product/partNumber/8501240.htm and the brackets for the spools are made from http://www.thingiverse.com/thing:18801 and a bit of 10mm aluminium tubing from B&Q.

]]> By: Jonathan http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/#comment-908 Thu, 08 Mar 2012 13:24:24 +0000 http://www.polargraph.co.uk/?p=329#comment-908 Where’d you get the new counterweight replacements?

]]> By: SnyperBob http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/#comment-889 Tue, 06 Mar 2012 14:40:34 +0000 http://www.polargraph.co.uk/?p=329#comment-889 I will admit, I’ll probably go this route once I can figure out my stepper glitch problem. I really need something that I can pack up in a hurry if I want. Or, I may go the route of a 4 conductor remote control car style connector.

I do like the ability to use any old Cat5/6, and be able to scale it to any length if/when needed. Perhaps I’ll put a meter on my leads and actually measure the max current draw, just to ease my mind

Nice job!

]]> By: sandy http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/#comment-885 Mon, 05 Mar 2012 21:24:00 +0000 http://www.polargraph.co.uk/?p=329#comment-885 Yes it is a bit close to the knuckle for that (that was the controversial aspect to the post that I forgot to mention), for all it’s neatness I don’t think it’s a one-stop solution for new kits. So sad.

–Edit
I forgot until just now, that the reason I’d decided that the network cables would be ok was that the leads that come out of the stepper motors are 26AWG anyway. I don’t know an awful lot about EE, but I think this might be an issue for longer runs of cabling. My calculations suggest a voltage drop of just over a tenth of a volt over a four foot cable, and I don’t think that represents enough power dissipation in the wire to be concerned with. The dream is back on!

]]> By: SnyperBob http://www.polargraph.co.uk/2012/03/the-controversial-rj45-power-connectors-and-some-big-wheels/#comment-883 Mon, 05 Mar 2012 14:11:20 +0000 http://www.polargraph.co.uk/?p=329#comment-883 Awesome, I was trying to come up with a similar idea of my own to make my machine more portable.

My only problem with that, is usually Cat5 or Cat6 cables have 24 AWG wire. I think that’s too close to the draw rating on the stepper motors. You should be fine, but I didn’t want to chance anything, especially if I leave my machine unattended for hours on end

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