T-ETH-Lite S3: LED intensity

Xinyuan-LilyGO / LilyGO-T-ETH-Series

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T-ETH-Lite S3: LED intensity #70

Open fplanque opened 1 month ago

fplanque commented 1 month ago

The Red Power led is on all the time (as expected) with a "normal" brightness/intensity (as expected)
The Yellow Link led is on when link is off and is very very faint. Almost impossible to see that it is on in bright daylight (but clearly visible at night).
The Green Activity led is on when NO Activity and turns OFF when there is activity. The bigger problem is that it is VERY VERY VERY BRIGHT! It almost hurts my eyes when in direct sight.

Is this normal or is my board defective? I expected all the LEDs to light up at the same intensity as the power led.

What are the current limiting resistors you used for each led? (It seems like you have used very different values).

Can you help me identify the resistors on the board so I can attempt to replace them with more appropriate values?

Thank you.

lewisxhe commented 1 month ago

The current limiting resistor of the early circuit board LED lamp was not set correctly, resulting in some being very bright and some being very weak. The resistor position is here. The figure below shows the resistor position. If you think the brightness is too high, you can replace it. The resistor size is shown in the figure.

fplanque commented 1 month ago

So I guess the 4K7 next to the power led is for the power led... But what about the other two? My guess is:

220R for the ACT led
4K7 for the LINK led Can you confirm?

Also, you say " resistor of the early circuit board LED lamp was not set correctly, " : does this mean I have an "early" board and there is already a "fixed" board available?

How do I check which board version I have?

Thank you.

lewisxhe commented 1 month ago

Check the date. If it is 2409, then the current limiting resistor has been replaced.

fplanque commented 1 month ago

Thank you for the clarifications.

What is 09 in 2409 ? Is it the week number?

(I ordered the one I have in week 20 of 2024 but I still got a 2333; will try again...)

lewisxhe commented 3 weeks ago

The correct answer is the week number. If you have the 2333 version, you don't need to mess with the LED because the LED connection method is wrong, but it does not affect the use.