09-23-2018, 07:13 PM
Hi Fred, I started by searching the part numbers on the 3 large IC's, in 2nd image the top brown one appears to be the bluetooth but all datasheets were Chinese so not certain but think so. The 20 pin IC under it appears to be the MCU and reading the datasheet it does have 2, 10-bit PWM channels however I couldn't find anything saying which pins on the IC are for that purpose. Also I'm a little confused, if the PWM is coming from the MCU where is driver for the LED's? Do you see anything else in the light or just that board and board with LED's?
This is the datasheet I'm looking at.
http://ww1.microchip.com/downloads/en/De...01795E.pdf
The 3rd 8pin IC at bottom on image 2 appears to be a LP2951, in the datasheet it says the device markings is KY5133 so I think it's the same. The datasheet says this is an adjustable voltage regulator so can't see that being used for the LEDs.
http://www.ti.com/lit/ds/symlink/lp2951.pdf
This is the datasheet I'm looking at.
http://ww1.microchip.com/downloads/en/De...01795E.pdf
The 3rd 8pin IC at bottom on image 2 appears to be a LP2951, in the datasheet it says the device markings is KY5133 so I think it's the same. The datasheet says this is an adjustable voltage regulator so can't see that being used for the LEDs.
http://www.ti.com/lit/ds/symlink/lp2951.pdf
