after startup output a warning messages

[toast/airingbutler.git] / README.md

diff --git a/README.md b/README.md
index 527406b7e9bafa06f70ad8e93be7cca182313be2..216535bc905860c7e5b2d2303103ed82926559a8 100644 (file)
--- a/README.md
+++ b/README.md
@@ -5,6 +5,10 @@ MH-Z19b CO2 sensor
 
 * https://github.com/WifWaf/MH-Z19
 * https://en.ovcharov.me/2019/06/10/carbon-dioxide-sensor-mh-z19b-part-1/
-* https://github.com/crisap94/MHZ19
+* Selected [Arduino Library](https://github.com/crisap94/MHZ19)
 * http://ihormelnyk.com/mh-z19_co2_meter
 * [German Blog about how to use MH-Z19B with Arduino](https://www.blikk.it/forum/blog.php?bn=neuemedien_fb&lang=de&id=1575901160)
+
+* fancy LCD with buttons:
+  + https://www.adafruit.com/product/772
+  + https://learn.adafruit.com/rgb-lcd-shield