From 72f87c5ae3889c637b285bfc449e78824a360cd7 Mon Sep 17 00:00:00 2001 From: Christian Lang Date: Sun, 28 Jan 2024 11:27:14 +0100 Subject: [PATCH] + add description for the usage of the CO2 auto calibration mode --- software/README.md | 11 +++++++++++ 1 file changed, 11 insertions(+) diff --git a/software/README.md b/software/README.md index 4a386c1..ed53b2d 100644 --- a/software/README.md +++ b/software/README.md @@ -185,6 +185,17 @@ Calibration parameters are stored in the sensor itself and not in the ESP. Therefore even after powerloss or flashing of new software no recalibration is needed. +### CO2 Autocalibration mode + +No manual calibration is needed if you operate the sensor in an environment with constant support of fresh air. +The sensor datasheet explains this further: + +> The correct application of ASC requires the SCD30 to be regularly exposed to air with CO2 concentration = 400 ppm, +> as is the case in well ventilated buildings over night without human presence. + +This `ASC` mode can be enabled by changing the parameter to the call of `setAutoSelfCalibration` to `true` (`src/sensors/scd30.cpp`). + + Development -----------