7-SEGMENT LED DISPLAY MAX7219 & SHIFT REGISTERS - Arduino tutorial #21 

Great to hear, thanks! 😃

Thanks! 😃

Thanks! 😃

Thanks! 😃

Great to hear! Thanks! 😃

You're welcome! 😃

You're welcome! 😃

You can just connect the output of the first with the input for the next one. The max7219 are chainable 😃

Nice question! It is probably the easiest to just turn of every segment before changing to a new digit 😃

@@BasonTech I tried that first, but it doesn't work because i have rapidly changing numbers. However i found a solution: void printNumber3(long number) { // Array of 8 bytes for each postion on the LED display byte digits[8] = {0, 0, 0, 0, 0, 0, 0, 0}; // Loop over each position to determine the number to show for (int i; i < 8; i++) { digits[i] = number % 10; number = number / 10; } // True when we've found the first non-zero digit bool firstNonZeroFound = false; for (int i = 7; i >= 0; i--) { // If the number is not equal to 0 if(digits[i] != 0) { firstNonZeroFound = true; } // Here is the solution i found :) if (firstNonZeroFound) { lc.setDigit(0, i, digits[i], false);} else{ lc.setRow(0, i, B00000000) ;} } }

Great! Btw it is quite common to arrange the accolades in an if/else structure like: if (firstNonZeroFound) { lc.setDigit(0, i, digits[i], false); } else { lc.setRow(0, i, B00000000); } This makes it easier to see the "code blocks" 😃

@@BasonTech Oh i will keep that in mind :)

Je bedoelt dat je 7 losse LED's hebt en die dan apart aanstuurt? Via 7 uitgangen op je Arduino kun je 7 LED's aansturen een andere optie is om met een losse MAX7219 chip te werken, maar dan is het bordje uit deze video veel makkelijker. Wist je trouwens dat er ook een Nederlandse versie van de video is op ru-vid.com/video/%D0%B2%D0%B8%D0%B4%D0%B5%D0%BE-KFC_bQmroko.html

Bas on Tech ja maar ik heb een proefwerk waar ik alleen losse led mag gebruiken. En ik heb geen idee hoe ik moet beginnen. Dank u wel om te antwoorden en ik heb al alle video’s gezien van het Nederlands kanaal. Groetjes

Ik kan moeilijk je proefwerk gaan maken 😉 Kijk nog eens goed naar de les over hoe je 1 LED aanzet, probeer dan vervolgens deze uit te breiden naar 2 LED's en zo verder.

Thanks! :) Have you tried to use modulo to split a number into positions in an array?

​@@BasonTech No, not shure how to do it :)

Divide number by 1, 10, 100 etc and then you know which digit to draw on which position. More info about modulo at: en.wikipedia.org/wiki/Modulo_operation

Ok. I'll try it. Thank you very much. I look forward for your future videos

Born and raised! 😄 As long as you understand what I say I am happy 😃

Sorry, can you be a bit more specific?

Bas on Tech i mean isn’t the GND always connected with GND ( negative) ? And always the VCC connected with 5 Volt , how you connected from GND to 5Volt ?

Bas on Tech im sorry I didn’t notice it 😅

Sure! As long as you share the link and not download the video and re-upload it to Facebook. Thanks!

Thankyou@@BasonTech