d-diot Mood Lamp

franzunix

ph1lw21

Hi, just arrived at your page for the mood lamp and noticed that you had some issues getting the Data signal to the LED’s.

There is a board that has sold in the thousands that uses the same techniques as your V1 design, but uses 300 Ohm resistors instead of the 10K Ohm - The ESPixel Pops
See here: - https://www.doityourselfchristmas.com/wiki/index.php?title=ESPixel_Stick_%26_ESPixel_Pops

https://www.doityourselfchristmas.com/wiki/images/3/32/ESPixel_PopsSchematic.pdf

I have used the design myself and used BSS138 transitors.

Phil.

franzunix

ph1lw21 Welcome to the forum, you are the first ! 👍

Thanks for you feedback and reviewing the schematic of the v.1.0 of the board I think that I have done a huge mistake with the position of the pins in the JP1.

In fact, if you bridge the LLC pin (= pin 3) with the data pin (=pin 2) as reported in the documentation (config B), the D2 pin of the MCU that carries the signal is completely excluded from the logic level converter circuit and this is no good!

I have to retest the board bridging pin 1 and 3, maybe in this way the LLC circuit can work.

franzunix

Tested the board v.2.0 and it works perfectly. The use of the SN74AHCT125DR IC solves the problem with the logic level converter circuit and thanks to PCBWay, now is possible to order the board directly from here without downloading the Gerber file from the d-diot wiki