From a4b50290fe94c7ef0af8b3ededa4f65a0057f81a Mon Sep 17 00:00:00 2001
From: Birte Kristina Friesel <derf@finalrewind.org>
Date: Sun, 7 Jan 2024 14:19:21 +0100
Subject: Application Example: influx_attr must start with a comma

---
 README.md | 5 +++--
 1 file changed, 3 insertions(+), 2 deletions(-)

diff --git a/README.md b/README.md
index 40be48f..b2b7d43 100644
--- a/README.md
+++ b/README.md
@@ -72,7 +72,7 @@ station_cfg.pwd = "..."
 mqtt_host = "..."
 ```
 
-Optionally, it can also publish readings to an InfluxDB.
+Optionally, it can also publish readings to InfluxDB.
 To do so, configure URL and attribute:
 
 ```lua
@@ -80,4 +80,5 @@ influx_url = "..."
 influx_attr = "..."
 ```
 
-Readings will be stored as `mh_z19,[influx_attr] co2_ppm=...`
+Readings will be stored as `mh_z19[influx_attr] co2_ppm=...`.
+So, unless `influx_attr = ''`, it must start with a comma, e.g. `influx_attr = ',device=' .. device_id`.
-- 
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