Módulo matriz de puntos 8x8 MAX7219 para Arduino y Raspberry Pi

Les dimensions del mòdul són 32 mm d’alt, 129 mm de llarg i 14 mm de profunditat. A la caixa s’inclou la matriu muntada i els pins/connectors necessaris per a la seva integració. Normalment no s’hi inclouen cables jumper ni manual físic.

El mòdul està dissenyat per operar a 5 V, de manera que connectar senyals de 3,3 V directament pot ocasionar falta de reconeixement o funcionament inestable. Es recomana fer servir un conversor de nivell lògic. Els pins necessaris són: VCC (5V), GND (terra), DIN (dades), CS (chip select), CLK (rellotge).

Es recomana soldar els pins amb cura per evitar curtcircuits i connectar l’alimentació sempre al voltatge especificat. És bona pràctica afegir resistències de limitació si es combinen diversos mòduls i evitar exposar el circuit a la humitat o a sobreintensitat. La llum s’ha de limitar als valors especificats per prevenir sobreescalfament.

El MAX7219 permet una taxa de refresc de fins a 800 Hz, suficient per a imatges estables sense parpelleig visible a simple vista. El mòdul funciona òptimament entre 0–50 °C i no s’ha de superar el voltatge de 5V ni la intensitat total recomanada pel datasheet (generalment uns 320 mA per a 32 LEDs encesos simultàniament).

The module dimensions are 32 mm high, 129 mm long and 14 mm deep. The box includes the assembled matrix and the pins/connectors needed for integration. Jumper cables and a physical manual are usually not included.

The module is designed to operate at 5 V, so connecting 3.3 V signals directly may result in no detection or unstable operation. It is recommended to use a logic level converter. The required pins are: VCC (5V), GND (ground), DIN (data), CS (chip select), CLK (clock).

It is recommended to solder the pins carefully to avoid short circuits and to connect the power supply always at the specified voltage. Good practice is to add current-limiting resistors if several modules are combined and to avoid exposing the circuit to moisture or overcurrent. The light should be limited to the specified values to prevent overheating.

The MAX7219 allows a refresh rate of up to 800 Hz, sufficient for stable images with no visible flicker to the naked eye. The module works optimally between 0–50 °C and the 5V supply must not be exceeded, nor the total current recommended in the datasheet (generally around 320 mA for 32 LEDs lit simultaneously).

The module dimensions are 32 mm high, 129 mm long and 14 mm deep. The box includes the assembled matrix and the pins/connectors needed for integration. Jumper wires and a physical manual are not usually included.

The module is designed to operate at 5 V, so connecting 3.3 V signals directly may result in the device not being recognised or in unstable operation. A logic level converter is recommended. The required pins are: VCC (5V), GND (ground), DIN (data), CS (chip select), CLK (clock).