Hi all, is anyone else experiencing this? I have 2 waveshare 64*32 P3 panels which work great. I use them with with both rpi-rgb-led-matrix and pixelpusher and LED Lab. I recently received 2 more and they are very dim when used in exactly the same setup.
I noticed that the latest ones use a different chipset. The first pair that work well seem to be populated with a JXI JXI5020GP LED driver chip. The second pair that are dim use the superchip FM6047 LED driver. I’ve enquired with Waveshare and they are investigating, but no response so far so I thought I would ask here.
I am using an Adafruit bonnet modified for PWM to drive the boards from a Pi Zero 2 WH with a 50W high quality power supply. Same result without PWM. Same results with 1,2 or 4 boards.
Example command used is:
sudo /home/pi/rpi-rgb-led-matrix/examples-api-use/demo -D 4 --led-cols=64 --led-rows=32 --led-gpio-mapping=adafruit-hat-pwm --led-chain=4 --led-parallel=1 --led-pixel-mapper U-mapper --led-pwm-bits=11 --led-brightness=100 --led-show-refresh --led-limit-refresh=120
I have played with different settings for PWM bits, LSB… audio is off. And in all cases 2 of the boards are bright and the other 2 are dim.