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This is an approach to having a wiper on the DO probe, as n
This is an approach to having a wiper on the DO probe, as none of the stand-alone DO probes have a wiper (unlike Turbidity, Chlorophyl and Blue-Green Algal stand-alone sensors, which have models with built-in brushes).
Also, as with all YosemiTech sensors, you need to power the DO sensors with 6-12 V (5V only works if you have in-line capacitors and no brushes) and you need an RS485-to-TTL serial converter. See https://github.com/EnviroDIY/YosemitechModbus#suggested-setup-with-an-envirodiy-mayfly and https://github.com/EnviroDIY/SensorModbusMaster/tree/master/hardware/Modbus-Mayfly_WingShield for details on that.
