yay, i eventually found a short on the bottom of my Max7219 chip...that only took hours to find

Out of curiosity how do i tell the chip to only scan the first six digits,

thanks
Bod

It does look like, when you try to display a glyph with no central segment, that entire digit does not illuminate. I cannot think of an obvious wiring mistake that would give that result, but what happens if you unhook the segment g wire from the display? Are you using exactly the same code with th...

LTolledo wrote: ↑

Thu Aug 06, 2020 11:13 am

dont get power from RPiZ,
split the input power
one for the RPiZ
and one for the MAX7219

for your reference:
RPi1A Max7219 x 6 Matrix display.jpg

Thanks, I just tried that and unfortunately i get the same results, im wondering do i need to change something when only using 6 digits instead of 8

So My Problem, if i run and power this from my Pi Zero i can display nearly all numbers apart from 0, 1 or 7, What happens when you try! Does it make a difference how many digits you display, and in which slots? Those glyphs are not the most power hungry; 1 is actually the least. Those glyphs are t...

Hi all, I have been experimenting with a MAX7219CNG and 7 Segment displays and had some success. I am now scaling it up and made a custom 6 Digit 7 Seg prototype using vero board (strip board) - see attachement and 5mm LED's (2 in Parallel per seg). I worked out that the LED Segments of a standard 7...

Hi All, I am successfully using a ZeroSeg with the included 7 Segment display, however id like to scale the display up. My plan is to build a display using 5mm LEDs (14 per digit) but i am aware that a 5mm LED pulls around 10-15mA each (and i want around 6 Digits). can anyone point me in the right d...