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Topic: 7x20 Led Rgb Matrix Help (Read 1 time) previous topic - next topic

CrossRoads

What LEDs are you using that need 80mA?

How about this - only turn a small group of cathodes at a time so you don't such big current (and hefty wiring)?
Treat is as dual  multiplexing - across each row, and then down the multiple rows.
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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Arduin0N00B

i just want the pulsecurrent to be 80mA so the leds are bright. the normal current they need is 20mA, but they are only on 1/7 of the time.. so i thought it would be good to go up to 80mA, the maximum the leds can handle.
you are suggesting that i only power 1 led at a time? wont it flicker if i do so?

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