Problema alimentación, funde cable

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hola! soy nuevo en el mundo de arduino, y estoy montando una motor shield  de adafruit, con alimentación externa.
batería li-po de 11.1 v, 3 celdas y 750ma, los motores funcionan perfectamente.
el problema surge cuando conecto otra  batería exactamente igual al jack de la placa arduino y en menos de un segundo me funde el cable positivo  de conexión , entre la batería y el jack.
¿alguien me podría decir por qué sucede esto?
evidentemente antes de conectar la batería comprobé que no existía corto alguno y que el centro del jack es el positivo.
muchas gracias

podrías poner un esquema de conexión, de como lo tienes??
una lipo en descarga, puede dar muchos "c" , igual no está en corto, pero un consumo muy elevado si que tienes ...


Arduino Forum > International > Español (Moderators: surbyte, Hector_A) > Problema alimentación, funde cable


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