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Arduino + DS3231 + MAX7219


fratello
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Va salut ! Am luat de la prietenii incoronati un display (4x) MAX7219, in scopul realizarii unui ceas cu Arduino si DS3231. Am gasit ceva scheme pe net :

-https://arduinoplus.ru/arduino-elektronnie-chasi/

-https://vk.com/@club_arduino-chasy-na-arduino-nano-i-svetodiodnyh-matricah-4x64-led-matri

-https://www.instructables.com/id/Arduino-Matrix-Clock-1/

 

Nu stiu pe care sa-l pun in practica ... am vazut in pagina Aliexpress a lui MAX7219 o poza cu un ceas pe care mi-ar placea sa-l fac :

-U29b792fba05e4547b4a5b8288c3208e5Q.jpg

 

 

Aveti cumva idee unde as putea gasi schema + softul pentru acest model de ceas ? Poate l-ati vazut pe undeva, din intamplare ...

Multumesc anticipat !

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...matricea mea cred ca are o problema ! Am incercat toate tutorialele gasite PE NET (Hello World, MERT, etc, etc) cu Arduino Uno si Arduino Nano si nu am obtinut decat matrice stinsa sau matrice aprinsa complet !!! Uneori doar cate o matrice din cele 4 aprinsa ....In niciun caz ceva lizibil.

Cum as putea verifica daca este OK matricea ??? Multumesc.

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Incearca cu biblioteca MaxMatrix de aici: https://github.com/riyas-org/max7219 si cu primul sketch de aici: https://howtomechatronics.com/tutorials/arduino/8x8-led-matrix-max7219-tutorial-scrolling-text-android-control-via-bluetooth/

Nu cred ca ai probleme cu matricea, ci mai degraba cu modul de comunicatie cu ea.

Ai un analizor logic? Daca da, atunci poti verifica ce se transmite pe SPI si te poti lamuri mai bine.

 

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Am separat cele 4 module ale matricei. Am lipit conectori pentru fiecare. Am incarcat in Arduino UNO primul sketch .... Din pacate niciun display nu se aprinde corespunzator. Doua se aprind complet si asa raman ; doua nu se aprind deloc. Probabil am nimerit eu o matrice defecta :(

Este improbabil sa o fi defectat eu...dat fiind ca nu am facut "experimente" deosebite cu ea ; doar sketchuri testate.

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