From fb4d112d324b63c0e325c393aded7754a8203fdc Mon Sep 17 00:00:00 2001
From: Guruprasadpguru928
 <87633769+Guruprasadpguru928@users.noreply.github.com>
Date: Mon, 19 Jul 2021 11:50:13 +0530
Subject: [PATCH] Update MQ135.h

---
 MQ135.h | 2 +-
 1 file changed, 1 insertion(+), 1 deletion(-)

diff --git a/MQ135.h b/MQ135.h
index 22cefec..3cb5bc5 100755
--- a/MQ135.h
+++ b/MQ135.h
@@ -24,7 +24,7 @@ v1.0 - First release
 /// The load resistance on the board
 #define RLOAD 10.0
 /// Calibration resistance at atmospheric CO2 level
-#define RZERO 76.63
+#define RZERO 75.63
 /// Parameters for calculating ppm of CO2 from sensor resistance
 #define PARA 116.6020682
 #define PARB 2.769034857