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Author Topic: Demultiplexer(100 leds Arduino)  (Read 2141 times)
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Alicante
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Ando algo liado a la hora de conectar 100 leds al Arduino. Me he informado de todos los multiplexores. La mayoría están poco documentados, en cambio, los que mejor están son los de 8 salidas. 8 salidas hasta 100...pfff tengo que poner 13. Es un royo.
Hay de 16,¿alguien tiene experiencia en el asunto?
Un saludo y gracias
smiley-wink
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MAX7219, 64 LEDs x 2 = 128 LEDs
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Alicante
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Muchas gracias. Control el forma de matriz. Pero si necesito 100 leds y me sobran 28 salidas,¿no funcionrá mal?
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Si, uh, enable 13 digits, no problemo
http://datasheets.maxim-ic.com/en/ds/MAX7219-MAX7221.pdf
Table 8.
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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Alicante
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Ok. Thanks for your support.
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um, De Nada?

Been a while since  high school Spanish smiley
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

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Jajaj, i believe you!
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Malaga
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También podrías plantearte usar registros de desplazamiento. Probablemente sea más barato y fácil de encontrar.
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Yes, expand a circuit such as this.
Add a 2nd 74HC595 shift register & ULN2803 current driver for the cathodes.


* 74HC595-8x8LED.jpg (95.22 KB, 960x720 - viewed 37 times.)
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
Arduino for Teens available at Amazon.com.

Alicante
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Según tengo entendido Solo podría poner 64; además de muchísimo cable y soldador.¿Qué decís?
Gracias!
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Malaga
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¿Porqué dices lo de sólo 64?
¿Con cual de las aproximaciones?
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Expandir la matriz a la derecha. Agregue más columnas, y otro registro de desplazamiento (74HC595) y tampón actual (ULN2803) para encenderlos.
(google translation)
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Designing & building electrical circuits for over 25 years. Check out the ATMega1284P based Bobuino and other '328P & '1284P creations & offerings at  www.crossroadsfencing.com/BobuinoRev17.
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¿Porqué dices lo de sólo 64?
¿Con cual de las aproximaciones?
Es lo que he leído.
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Alicante
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Vuestra propuesta es:
Que ponga 13 registros(595) + 13 de potencia(2803)
¿Por qué?
Gracias!
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Malaga
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Es una opción, con sus ventajas, y sus inconvenientes.
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