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+====== pHmeter with multiple probes  ======
+{{:cs:designs:img_20160303_025351.jpg?400|}}
+===== Software =====
+[[https://github.com/ODZ-UJF-AV-CR/pHmeter|Source code]]
+===== Connection =====
+==== 5V ==
+''+5V → ODROID C1/4''
+''GND → ODROID C1/6''
+==== I2C ====
+Jumper SLAVE OUT.
+Jumper MASTER OUT.
+Hub I2C GND and VDD to ADC GND and VDD.
+''ODROID C1/3 → I2CHOB02B/SDA''
+''ODROID C1/5 → I2CHOB02B/SCL''
+''I2CHOB02B/1/SDA → I2CADC01A/SDA''
+''I2CHOB02B/1/SCL → I2CADC01A/SCL''
+==== ADC ====
+Power +5V to I2CADC01A and OZDUAL02B.
+Jumper REF- GND.
+''I2CADC01A/Vref → OZDUAL02B/-in''
+''I2CADC01A/REF+ → OZDUAL02B/Vref''
+''I2CADC01A/IN+ → OZDUAL02B/out''
+''I2CADC01A/IN- → OZDUAL02B/-in''
+''OZDUAL02B/Vref → pH probe -''
+''OZDUAL02B/+in → pH probe +''
+==== OA ====
+{{:cs:designs:img_20160301_214420.jpg?400|}}
+{{:cs:designs:img-925133830.pdf|schematic of ADC}}