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Topic: 43 Segment Display (Read 297 times) previous topic - next topic

bwinter88

I'm looking to drive a display with 43 separate segments, each drawing max 20mA. Perhaps by using latches, or daisy-chained 7-segment ICs, but I'm worried it will draw too much current for that. Any simple solutions?

PaulS

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I'm looking to drive a display with 43 separate segments, each drawing max 20mA.

All on at once?

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but I'm worried it will draw too much current for that.

You are right to be.

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Any simple solutions?

Separate power supply and 43 transistors. Well, maybe no so simple... 8)

Grumpy_Mike

Have a look at the MAX6954, that will be able to drive your display.

CrossRoads

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Any simple solutions?

Not without seeing the device. Is this a 5-digit 7-segment display with a couple more lights? 16 pins?
If so, or if similar, multplexing will be required.
Designing & building electrical circuits for over 25 years.  Screw Shield for Mega/Due/Uno,  Bobuino with ATMega1284P, & other '328P & '1284P creations & offerings at  my website.

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