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| OLED voltage levels... |
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| alank2:
--- Quote from: Fungus on October 02, 2015, 06:26:21 pm ---In the datasheet they mention three different brightness levels, FWIW. --- End quote --- I missed that which datasheet and where? I've seen something about 256 levels in a few sheets. |
| alank2:
It is working now. I tried a loop with all 256 steps and it kept increasing smoothly until rolling over and then I tried 8 steps from low to high and you can see each of those steps too. Pretty cool little displays to play with. I love that they emit light like a LED, but with fairly low power consumption. |
| Fungus:
--- Quote from: alank2 on October 02, 2015, 06:39:10 pm --- --- Quote from: Fungus on October 02, 2015, 06:26:21 pm ---In the datasheet they mention three different brightness levels, FWIW. --- End quote --- I missed that which datasheet and where? --- End quote --- The one you posted, page 7: http://www.buydisplay.com/download/manual/ER-OLED0.49-1_Series_Datasheet.pdf --- Quote from: alank2 on October 02, 2015, 06:39:10 pm ---I've seen something about 256 levels in a few sheets. --- End quote --- 256 possible values in a register doesn't always mean they use all 8 the bits in hardware. eg They might only use 2 of them. |
| amyk:
Those are just a sample of the lifetime vs contrast graph. The controller has true 256-level gradation. |
| Fungus:
--- Quote from: amyk on October 03, 2015, 01:55:27 pm ---Those are just a sample of the lifetime vs contrast graph. The controller has true 256-level gradation. --- End quote --- Apparently so. But when I wrote the original post the OP was saying: "I made it step from 0x00, to 0x8F, to 0xFF, but I only see two brightness steps and only see two distinct steps when monitoring current." |
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