1-Wire tester, shows ROM code and temperature on an LCD screen
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# 1-Wire tester
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Uses Arduino Pro Mini, Arduino Nano or similar, with ATmega328P.
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LCD is HD44780, 2-line.
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## Pinout
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- D2 - RS
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- D3 - R/W
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- D4 - E
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- D5..D8 - DATA4..7
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- D9 - 1-Wire data, 4k7 pullup to 5V
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## HD44780 connection
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- GND
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- +5
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- contrast (potentiometer +5 - GND)
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- RS
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- R/W
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- E
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- D0-D3 ... to GND
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- D4-D7 ... communication
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## Usage
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Everything is automatic, just connect 1-Wire devices to the data pin.
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ROM code reading works in parasitic mode, but temperature measurement
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is implemented only in 3-wire mode.
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