Data Sheet
V1.1 – Initial release (Oct 30, 2014)
• Change output to mg/L, then percentage (was previously percentage, then mg/L).
V1.5 – Baud rate change (Nov 6, 2014)
• Change default baud rate to 9600
V1.6 – I
2
C bug (Dec 1, 2014)
• Fixed I
2
C bug where the circuit may inappropriately respond when other I
2
C devices
are connected.
V1.7 – Factory (April 14, 2015)
• Changed “X” command to “Factory”
V1.95 – Plock (March 31, 2016)
• Added protocol lock feature “Plock”
V1.96 – EEPROM (April 26, 2016)
• Fixed glitch where EEPROM would get erased if the circuit lost power 900ms
into startup.
V1.97 – EEPROM (Oct 10, 2016)
• Fixed glitch in the cal clear command, improves how it calculates the DO,
adds calibration saving and loading.
V1.98 – EEPROM (Nov 14, 2016)
• Updated rmware for new circuit design.
V1.99 – (Feb 2, 2017)
• Revised "O" command to accept mg.
V2.10 – (April 12, 2017)
• Added "Find" command.
• Added "Export/import" command.
• Modied continuous mode to be able to send readings every "n" seconds.
V2.11 – (Sept 28, 2017)
• Fixed glitch where the temperature would default to 0 on startup.
V2.12 – (Dec 19, 2017)
• Improved accuracy of dissolved oxygen equations.
Dissolved Oxygen circuit rmware changes
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