Recent content by Exengprof

Specific to the img2927 pic question, the other side of the board had no electronics, only the surface mount RGB leds. Try as I could, the ic number is not present on the ic. Not sure if it’s cleaned off with something (acid?), or never there. the controller does have an IR inputting, but...

Aha. I’m learning!

Thanks. With multiple colors, it’s not using the reverse polarity approach. Simply for my understanding, is a variable dc voltage (via PWM) used by any 2-wire system to control color?

Thanks, all. The WS2811/12 is a three-wire scheme, with a data wire addressing individual pixels in the string. The system I am trying to reverse engineer is a 2-wire system, where all LEDs are the same color. Are these (older?) 2-wire systems controlled by the average voltage at the pins...

Between controller board from WeiXin Electronics and the LED board, the IC's labels are not visible. Not sure if erased, removed, or not present at the build. Attached are photos of front side/back side of board. I guess the 4-pin IC is an opto, and the 8-pin is the smart controller. The...

Some answers to help ... 1. All lamps have the same color. 2. End goal: I want to set the color of the LEDs to a color of my choosing, and to have that color as a constant color. My plan is to program up a small micro to control the fixed color. I am assuming the control is a I^2C signal...

I’m working to build a replacement controller for a U.S. color changing LED string. Store brand from Lowe’s, named “Portfolio”. Controller damaged beyond recognition! Here is a link to what I believe is where the store gets this from. It’s a 2-wire system...