lg 7seg will it work

369

03:25:05

Each led represents 3, 5mm-3v-20mA leds (per segment) in a large 7 segment display. There will be 4 digits being controlled with 1, 2n22XX pnp and 7, npn transistors each, a max7219 and arduino micro running all 4 digits. Will this circuit protect the max7219 and arduino? Will it even work?

published 7 years ago

lenzrulz

7 years ago

Just another idea: http://everycircuit.com/circuit/5226036764868608

pmoniz

7 years ago

too bad I can access this circuit. http://everycircuit.com/circuit/5226036764868608

hurz

7 years ago

No additional transistors/resistors needed MAX7219 does all for you. Just a three wire interface and upto 8 7seg displays connected with common cathode.

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