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 Subject :Proposed low voltage colored tape standard.. 2013-08-20- 20:21:25 
K5KTF
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We need to address the quick setup and prevention of damage for multiple types of equipment in a deployment.

We wish to implement a standard practice of marking both the end of the power cord AND the input of any device.

This creates ease of setup even if you are unfamiliar with the equipment.

We propose to use Scotch 35 colored marking tape, and the colors available are:

Brown, Gray, red, white, violet, blue, yellow, orange. Green is suggested as use for grounding only.

Voltages needed to identify are:

3.3VDC, 5VDC, 6VDC, 12VDC, 24VDC, and 48VDC.

Please reply here and give your suggestions. If you know of a standard, please provide reference to it.


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 Subject :Re:Proposed low voltage colored tape standard.. 2013-08-20- 21:49:44 
KK6EOO
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The colors you have would work with the resistor color code matched to the first digit of each voltage.
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-08-21- 09:52:05 
KD7RYY
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therefor red would be 3V3, but most of us are using Red powerpoles for 12v.
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-08-21- 13:45:22 
KD4IYI
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here is a little page on electronics color coding... using the resistor color code would allow accurate coding, and fingernail polish would be another option, and pretty much any color could be gotten... http://www.zianet.com/ebear/colorcodes.html
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-08-21- 18:17:23 
AD7QF
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I am currently using black for common ground, red for +12V and yellow for +5v. Some devices I am finding are using yellow for +5v and the red is common for +12v already.  And the Anderson connectors have colors as well.  So I use a yellow Anderson connector for the +5v side.

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Last Edited On: 2013-08-21- 19:27:02 By AD7QF for the Reason
 Subject :Proposed low voltage colored tape standard.. 2013-08-22- 09:03:25 
wx5u
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I'll suggest

Save orange for something special, such as non standard or dangerous somehow.  Orange sticks out more.  

White gets used so often for labeling, it should probably be used last.

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I'm not part of the development team, so take what I say with a grain of salt. I'm also easily confused.

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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-12- 17:43:33 
KC8UFV
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Hmmm... 3.3, 5, and 12 have standards in ATX supplies - 3.3 is orange, 5 is red for switched, purple for always on, and 12 is yellow...
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-12- 19:09:49 
NG5V
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Several responses here and each points to different usage for the "standard". Therein lies the problem. Depending on your background, any color can mean almost anything. Based on the HUGE number of appliance operators that will need to become comfortable with multiple products used concurrently with different voltages, I have a very hard time recommending anything for ground besides black and anything for 12 besides red. The PC power supply example is quite widespread but several multiples of hams think of +12 and ground for each computer savvy operator who thinks in the 4 wire molex code. I was hoping for pointers to hard standards and widespread practice to guide us. Finding none, we just need to post something and begin to shape field practice into something users can expect. Any final thoughts???? NG5V
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-12- 19:21:44 
NG5V
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I had posted a sample on the mail list but neglected to do so here. This is my suggestion. Black ground/zero volts Yellow 3.3v Green 5v Blue 6v Grey 9v Red 12v Brown 24v Violet 48v NG5v
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-14- 21:40:39 
K5HMY
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We ran into a WRT54G V1 today that was 5VDC. When we tried to put a 12VDC power wart on it the plug would not go as the 5VDC center pin was larger than the hole in the 12VDC plug. I am not sure a color code is nessary, but will go along with what ever the group decides to implement.
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-15- 01:01:33 
ae5ae
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That is interesting! I'm not sure how "standard" it is but all my 5-VDC wall warts had the 2.5mm ID needed by the WRT54G v1.0. Also, the 12-VDC warts had the 2.1mm ID barrel connectors and would not fit the WRT54G, including the supplied connector on the Belkin supplies. I had always thought they'd fit each other. **BUT**, a number of 9-VAC and 9-VDC wall warts I have use a 2.5mm ID barrel connector and thus would zap the v1.0 model. Let's say using the color code would be the better part of valor. :) -Rusty-
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 Subject :Re:Proposed low voltage colored tape standard.. 2013-09-16- 23:16:44 
AD7QF
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There are other devices that are being attached to the nodes that need 5 v; ie Raspberry Pi, IP cameras, some external hard drives and others. So there is a need to keep from mixing up power voltages. In my case I am using for 12 v a standard Anderson Power Pole assembly of red (+) and black (-). For 5 v yellow (+) and black (-) assembled as a stacking set instead of a side by side set so as to not be able to interconnect the two. Yellow was choosen because some of the 5 v wires on commercial devices are yellow/black. This is not a hard a fast rule, but it was easy to adope for the devices that need it.
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 Subject :Re:Re:Proposed low voltage colored tape standard.. 2013-09-17- 10:28:17 
KC8UFV
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Be careful with connecting stacked powerpoles for power. Side by side makes them genderless, and maintains the same polarity. Stacked is good for signalling where you need have an out and an in that always pair up, because they will reverse the wires. For example, if I need a serial connection to go with power, I might put a standard red/black pair in the middle, and use a 3rd color above and below the black, with the outgoing data above the black, the incoming below, and they will always match up the signalling properly. This is how the old IBM token ring connectors worked, and is also how some fiber connections work. 





[AD7QF 2013-09-16- 18:16:44]:

There are other devices that are being attached to the nodes that need 5 v; ie Raspberry Pi, IP cameras, some external hard drives and others. So there is a need to keep from mixing up power voltages. In my case I am using for 12 v a standard Anderson Power Pole assembly of red (+) and black (-). For 5 v yellow (+) and black (-) assembled as a stacking set instead of a side by side set so as to not be able to interconnect the two. Yellow was choosen because some of the 5 v wires on commercial devices are yellow/black. This is not a hard a fast rule, but it was easy to adope for the devices that need it.

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 Subject :Re:Proposed low voltage colored tape standard.. 2020-08-13- 13:49:40 
K9UXW
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How can I recover a wrt54g v2 that got the power in reversed and is now dead?
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