getConfig has been renamed to getControllerConfig List of files that need to be updated: https://github.com/mysensors/MySensorsArduinoExamples/search?utf8=%E2%9C%93&q=getConfig This problem was noticed in the following MySensors forum threads: https://forum.mysensors.org/topic/5841/getconfig-was-not-declared-in-this-scope-v2-1-1-fixed/2 https://forum.mysensors.org/topic/5865/could-use-a-bid-help-to-get-started/15 https://forum.mysensors.org/topic/4807/atmospheric-pressure-sensor/12