pH Featherwing

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Blog posts featuring the pH FeatherWing

Assembly of the pH FeatherWing

The pH FeatherWing is sold as an unassembled kit. The kit includes the pH FeatherWing v0.2 board (PCB with all of the smt components), and a set of through-hole components. These are i) 3-pin screw terminal connector (blue), ii) 12-pin and 16-pin headers and iii) BNC connector. pH FeatherWing

pH Featherwing

The pH FeatherWing hardware guide

The pH FeatherWing is a single channel pH electrode amplifier based on Texas Instrument's LMP7721 ultra low input bias current (3 fA) precision operational amplifier. The design of the pH electrode amplifier closely follows Texas Instrument's "AN-1852 Designing With pH Electrodes" application note. It is compatible with Adafruit's

pH Featherwing

Creating a pH meter using the pH FeatherWing

In this blog post we demonstrate how to create a pH meter using the pH FeatherWing, an Adafruit Feather M4 Express and a few additional components. The meter will display a continuous readout of the current pH and can be calibrated, via button press, at pH values of 4, 7