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