Measure pH or ORP
An I2C sensor device that can read any voltage based sensor such as a pH or ORP probe. The hardware is the same, the only difference between measuring pH and ORP is the API. There is a connector available to use a waterproof DS18B20 temperature sensor for temperature compensation. The firmware on the device provides two calibration options, single or dual point.
The board uses the Qwiic Connect System for wiring, it’s an easy-to-use, polarized, push-to-fit connector. No more mistaken connections or soldering header pins. Adafruit calls these connectors STEMMA QT.
All boards have a conformal coating to help protect against moisture, corrosion, and short circuits.
You would use this sensor device if you want to easily add pH or ORP measurements to your device.
When different probes are connected to the same controlling device, they can cause interference. The environment also causes interference due to ground-loops or other electrical noise like pumps. Electrically isolating the probe can help to prevent these problems.
All μFire probe interfaces come with electrical isolation hardware which provides a stable, isolated power supply and I2C-bus between the sensor and your controlling device.
The board can be purchased by itself, pH and ORP probes, and temperature sensors are also available separately.
The board by itself with one Qwiic wire. - $60.00
A DS18B20 temperature sensors enclosed in a waterproof housing. Measure from -55 to 125 C. It includes a convenient polarized connector and 1 meter of cable to easily attach it to uFire devices. - $7.00
The probe is gel-filled, single-junction, with a plastic body. Calibration powder in pH 4/7/10 that mixes with distilled water for a single use. - $20.00
A gel-filled, 245 mV potential ORP probe with a platinum disc electrode. - $40.00
Qwiic to Board - $1.50
Qwiic to Male - $1.50
Female to Qwiic - $1.50