added description of project

diff --git a/README b/README
new file mode 100644 (file)
index 0000000..bcfcc08
--- /dev/null
+++ b/README
@@ -0,0 +1,7 @@
+Capture 433 Mhz sensors using rtl-sdr emit json using mqtt and save to influx/PostgreSQL
+
+
+Example queryies:
+
+       select time,model,json->'temperature_C' as temp,((abs((json->>'temperature_C')::float) - 32)/(9/5)) as f2c,json->'humidity' as hum from rtl433 where (json->>'temperature_C')::float < 200 order by time desc limit 30 ;
+