LED Matrix and Pro mini

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so bought led matrix ( https://www.sparkfun.com/products/11861) , got work fine arduino uno project work on pro mini. however, when tried hook promini entire screen goes on , off little bit on. how fix this? there power regulation missing? promini 5v , using vcc pin on promini.

what voltage (and amps) power supply hooking pro mini? , hooking power supply "raw" pin?

you using vcc pin, i'm assuming hooking matrix pin.

the spec sheet matrix says:
operating voltage: dc 4.7v - 5.3v
    typical voltage: 5v
    operating current: 320ma
    max operating current: 2a

2 amps lot. doubt maxing out though.

anyhow, easy way test hook separate 5v power supply matrix.


Arduino Forum > Using Arduino > Displays > LED Matrix and Pro mini


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