Additional components are in transit, so I anticipate having some more boards built by Sunday (09/22/2019). What is it? This design is an isolated pH probe interface over I2C created by Roberto But...Read More…
Additional components are in transit, so I anticipate having some more boards built by Sunday (09/22/2019).
This design is an isolated pH probe interface over I2C created by Roberto Buti for reef-pi. It's powered by the ADS1119, a 4-Channel, 1-kSPS, 16-Bit, Delta-Sigma ADC With I2C Interface. Although it is designed for reef-pi, this board can be used with anything that can communicate over I2C (including Arduino).
Unlike other pH probe boards, this product integrates voltage and signal isolation to ensure reliable, consistent pH readings.
The address is configurable based on the 2 jumper caps.
The address 0x45 with both jumper caps attached.
write 0x45,0x06 //SW reset
write 0x45,0x40,0x06; //set config register for continuous conversion, 90SPS
write 0x45,0x08; // start conversion
-loop to read value periodically: write 0x45,0x10 then read two bytes
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Janos | July 29, 2019
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