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“Introduction Though there are many Instructables on some aspect of how to make circuit boards, this one is different. It’s an instructable on how to make the things you need to make circuit boards, specifically, a flamboyant business card …

“This circuit was developed as a offshoot of our local Rabbit hole hackerspace pumpkin carving night.There was interest in using LED candles to illuminate the pumpkins. Did not think that the cheep little tea lights would put out enough …

“Embedded systems frequently use HD44780-type LCD displays as it is considered the most popular alphanumeric display controller. The interface comprises at least 14 pins: eight for data, three for control (EN, WR, RS), two for power supply (Vdd, Vss …