the segments are wired oddly making software a bit wonky for the 2 rows. The segments are ….
0123
7654
#include <LedControl.h> int p; byte x, y, s; byte z[65] = {}; LedControl lc = LedControl(11, 13, 7, 8); // DIN,CLK,CS,SEGS void setup() { int devices = lc.getDeviceCount(); for (int address = 0; address < devices; address++) {lc.shutdown(address, false); lc.setIntensity(address, 0); lc.clearDisplay(address);} for (s = 0; s < 8; s++) {lc.clearDisplay(s);} for (p=0;p<65;p++) {z[p]=random(0,255);} } void loop() {x = 0; s = 0; p = 0; while (s < 4) { z[p] = z[p + 1]; lc.setColumn(s, 7 - x, z[p]); z[p + 32] = z[p + 33]; lc.setColumn(7 - s, x, z[p + 32]); x++;p++; if (x == 8) {x = 0; s++;}} z[32] = random(0, 255); z[64] = random(0, 255); lc.setColumn(0, 7, z[32]); lc.setColumn(7, 0, z[64]); }