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Author Topic: Schematic for Word-Clock using Arduino UNO  (Read 1024 times)
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Hi guys,
I am making a wordclock with an LED matrix, please check the schematics for any mistakes.
Thanks!!

Max


* Schematic for Word-Clock using Arduino UNO.jpg (170.2 KB, 1920x1080 - viewed 138 times.)
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I don't see why it wouldn't work.
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Created Libraries:
NPV2 (NewPasswordV2),  TFT_Extension, OneWireKeypad, SerialServo.
Will provide libraries if asked in PM or forum.

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alright, thanks!
I just wanted to get sure because the board will already be etched on friday
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WAIT, did you test it first? Just because I don't see anything wrong with it, does not mean there is nothing wrong. You always need to test and re-test first, before you make a board.
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Created Libraries:
NPV2 (NewPasswordV2),  TFT_Extension, OneWireKeypad, SerialServo.
Will provide libraries if asked in PM or forum.

nr Bundaberg, Australia
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I'd be e bit worried about the current-sourcing ability of the '595s, they really aren't designed to drive LED statically and if you're multiplexing you need more current than usual. IIRC they can source maybe 6-7mA, check it out.

You may find the LEDs won't be bright enough.

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Rob
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Rob Gray aka the GRAYnomad www.robgray.com

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That's why I have the Darlington Arrays
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Quote
I have the Darlington Arrays
For sinking the rows, it's sourcing the columns I'm on about.

You know there are single chips that do this and more, for example the AS1130.

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Rob
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Rob Gray aka the GRAYnomad www.robgray.com

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