v1.1

Release of the AirGradient AlphaSense ADC module v1.1 — the interface board that digitizes the AlphaSense electrochemical gas sensors in the Open Air Max outdoor monitor.

A compact 2-layer board carrying two TI ADS1115 16-bit ADCs that read the AlphaSense NO₂ (A43F) and O₃ (A431) electrochemical sensors and report to the host over I²C, with a ferrite-filtered supply for clean analog readings.

Attached: alphasense-adc.zip — the Gerber production set (the Gerber filenames inside keep the design's Bitbucket-era alphasense-oa-pcb naming). BOM and pick-and-place CSVs are tracked in the repository under alphasense-adc/production/.

Design files are in KiCad 9 format.