yoyojacky / 52pi Goto Github PK

Hi!

I'm very new to Rpi, gpio, etc.
I have this led 8x8 matrix and I was wondering what you'd recommend to use it as an audio visualizer.

Best

Hi @yoyojacky

I've seen your post on https://wiki.52pi.com/index.php/RPI-RGB-LED-Matrix_SKU:EP-0075

It's been very informative, and I'm trying to adapt your code to my use case. I was wondering if you could help me out.

First of all, I'm using an ESP8266 microcontroller with the MicroPython firmware. I have somewhat adapted your code to MicroPython and looks like this:

from machine import SPI, Pin
import time

spi = SPI(1, baudrate=500000)
ce = Pin(15, Pin.OUT, value=1)

rows = [0x00, 0x66, 0xFF, 0xFF, 0xFF, 0x7E, 0x3C, 0x18]
for j in range(8):
    ce.off()
    spi.write(bytearray([~rows[j], 0xFF, 0xFF, 0x01 << j]))
    ce.on()
    time.sleep(0.1)

For some reason, every time it draws a horizontal line, the previous line disappears. I've recorded a video: https://youtu.be/KMouz8hCJDg

I was wondering if you have an idea what I may need to change in my code in order to make the matrix display the full picture.

Thank you.

Hi,
How can i rotate the screen upside down? The standard Raspberry Pi config/cmdline.txt doesn't work.