Max 7219 💻LED matrix basic counter fonts stopwatch md parola md max7219 0056

[@taewoochun2526]

Thanks for great videos! Really easy to follow and like your detail explanation! Can't stop to watch your videos. Really appreciate it! I am trying to make a stopwatch for my research purpose that could go up to 500~600 hours. Would it be possible to make it with MAX7219 led dot display? My experiment will be 400-500 hours long and I need a stopwatch like.... "HHH:MM:SS". Also, I am thinking about using 64x16 dot display (connect four 32x8 MAX7219 dot matrix) and wondering would it be possible and reliable (power source).

[@flixmyswitch]

yes for sure. you can use a smaller font, to make the matrix smaller. see my video on fonts

[@TimFuzail]

Is there anyway to make the font smaller so that more digits would fit on screen without scrolling?

[@flixmyswitch]

Hi look at my other video all about FONT number 11 i think

[@xrphobby1341]

Where do I save the font file? Thank you

[@flixmyswitch]

Save the font file in the same directory as the code file. When you then open the code file you will see an additional tab at the top just like in the video. Then it should compile 👍

[@xrphobby1341]

Many thanks for your quick reply. If keeps uploading maybe because there's not enough space storage, its says 96% of storage space has been used??

[@flixmyswitch]

@ronkeller154 the code link is now working, sorry about that

[@peterengland01]

Have you done the STOPWATCH sketch yet ?

[@flixmyswitch]

Hi Peter No, its not in my list of things to do at the moment

[@flixmyswitch]

I am working on a nice RGB led project. 1536 LEDs, lots of 3d printing. Still in the design phase but it's going to be very cool once I iron out the build problems.

[@ronkeller154]

Andy, I tried this code on a nano and an uno and couldn't get it to work. The counter would reach 32768 and turn into a negative number. Then it would count backwards to zero. I tried replacing g the int variable with long int, but that made no difference. Any thoughts?
Ps. The code works just fine on an esp8266.

[@flixmyswitch]

Hi. Yes code was made for an esp8266. I don't have a nano. May be a lack of memory that holds the counting number. The structure of the code should give you the base to amend it for a nano, it's only maths. Please let me know if you crack it and I will add a note to the video somehow

[@TimFuzail]

instead of making your variable an INTeger, make it a float

[@xrphobby1341]

I followed what you did but it didn't work. I'm using arduino uno and have installed LibPrint

[@flixmyswitch]

Have you install the libs listed in the top of the code

[@flixmyswitch]

Line 20 to 24 check your pins clk, cs etc are mapped to your pins that are called clk C's etc. I am away so can't check any more

[@xrphobby1341]

@@flixmyswitch yes all the libraries are installed

[@flixmyswitch]

Try loading the libprintf library

[@xrphobby1341]

@flixmyswitch thank you it's working. What I'm trying to learn now is to use your code to make a clock with my own customized fonts.