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Am colour blind, need help identifying bands

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JohanH:

--- Quote from: pcprogrammer on August 25, 2022, 11:03:55 am ---
Unless this was very very recent you should tell that to the French.

--- End quote ---

OK, that's laziness from their part. Most European countries are expected to adapt the standards. Let's check again in a few years... In my opinion things like these should be enforced within EU (relates to electrical safety etc.).

Zenith:
Tim88.

I am slightly red-green colour blind. For instance I can't tell the brown from the reds on some sets of snooker balls.

The resistor colour code is an invention of the Devil, especially when used with small 0.5W or 0.25W resistors. I usually use a DMM. I find I can usually use the colour code if I use a watchmaker's eye glass and good light. Maybe that's worth a try. Otherwise get an LCR meter.

pcprogrammer:
I zoomed in on L1 and my verdict is red red brown :)

Tim88:
Thanks for all the input, one post made me think to try reducing the colour depth so I reduced it to 16 colours. L1 and L2 look red, red, brown to me, much easier to see. Colour blindness really doesn't bother me in everyday life except for daggum resistor/inductor stripes and finding specific wire colours. Red-green-brown-grey and blue-purple both look similiar depending on the shade.

On a funny sidebar, when I joined the Navy years ago, I had to identify 3 red, 3 brown and 3 green yarn balls of out a box when I failed the Colorblind test. I thought, well, that shouldn't be too bad, just have to separate the red, brown and green. However... There was not just one shade of each colour, there was 50 million shades of each! To this day, I don't know how I passed that test. I found out in kindergarten I was colour blind when I drew a crayon pic of a house on a hill and coloured the grass grey! |O

Will desolder those when I get time, still taking bets on the right value!

tautech:

--- Quote from: Tim88 on August 25, 2022, 07:42:09 pm ---Thanks for all the input, one post made me think to try reducing the colour depth so I reduced it to 16 colours. L1 and L2 look red, red, brown to me, much easier to see. Colour blindness really doesn't bother me in everyday life except for daggum resistor/inductor stripes and finding specific wire colours. Red-green-brown-grey and blue-purple both look similiar depending on the shade.

On a funny sidebar, when I joined the Navy years ago, I had to identify 3 red, 3 brown and 3 green yarn balls of out a box when I failed the Colorblind test. I thought, well, that shouldn't be too bad, just have to separate the red, brown and green. However... There was not just one shade of each colour, there was 50 million shades of each! To this day, I don't know how I passed that test. I found out in kindergarten I was colour blind when I drew a crayon pic of a house on a hill and coloured the grass grey! |O

Will desolder those when I get time, still taking bets on the right value!

(Attachment Link)

--- End quote ---
Yes often we need lift a leg to get a sensible measurement however there are other ways, a very old one called the razor blade technique. These days we would instead use a scalpel or snap off blade knife to break a nearby trace, get the measurement and later apply a solder bridge over the cut.

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