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Thank you for this ( all these years later ). You made this so easy to assemble and studying the code is fun as well. I'm having trouble combining this with a shift register (74hc595) to save on a few pins if anyone has accomplished this could you please provide a fritz or drawing or schematic of how? I'd be forever grateful. Again thank you for this it was as fun to assemble as it was for you to create it I'm sure. =)
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