From 488180b8cb3ff52eebea03a5d5e4b5da70a06f39 Mon Sep 17 00:00:00 2001 From: Dobrica Pavlinusic Date: Thu, 9 May 2019 09:44:48 +0200 Subject: [PATCH] filter nosiy measurement from dht22 with diffrence > 10 from average --- rpi_promini/rpi_promini.ino | 6 ++++-- 1 file changed, 4 insertions(+), 2 deletions(-) diff --git a/rpi_promini/rpi_promini.ino b/rpi_promini/rpi_promini.ino index 5e98806..d767dd0 100644 --- a/rpi_promini/rpi_promini.ino +++ b/rpi_promini/rpi_promini.ino @@ -114,11 +114,13 @@ unsigned long time = millis(); void loop() { if ( millis() - time > 2000 ) { float t = dht.getTemperature(); - if ( dht.getStatus() == 0 ) + float delta_t = abs(t - temp_avg.getAverage()); + if ( dht.getStatus() == 0 && delta_t < 10 ) temp_avg.addValue( t ); else dht22_errors++; float h = dht.getHumidity(); - if ( dht.getStatus() == 0 ) + float delta_h = abs(h - hum_avg.getAverage()); + if ( dht.getStatus() == 0 && delta_h < 10 ) hum_avg.addValue( h ); else dht22_errors++; time = millis(); -- 2.20.1