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Problems that arise when the I2C peripheral board is powered by 5 volts and the MCU to which it is connected is powered by 3.3 volts. Things become problematic if we have to connect a peripheral ...

Posted in clock hacks Tagged 16x2 LCD, arduino, character display, character lcd, digital clock, hd44780, i2c ← Retrocomputing With Modern Hardware, No Emulation Required The Wichinsky ...