From 568c4d29e2210af8def2bad0b3a6936287408303 Mon Sep 17 00:00:00 2001
From: cctweaker <>
Date: Thu, 18 Jun 2020 12:25:04 +0300
Subject: [PATCH] update
---
README.md | 12 ++++++++++--
1 file changed, 10 insertions(+), 2 deletions(-)
diff --git a/README.md b/README.md
index b52627c..ebc986c 100644
--- a/README.md
+++ b/README.md
@@ -1,9 +1,13 @@
# ESPsensor
is covering a need for low power, cheap, battery operated sensors that you can place throughout your house.
-It is designed to use an ESP-01 / ESP-01S and a SI7021 temperature and humidity sensor.
+It is designed to use an ESP-01 / ESP-01S and a SI7021 temperature and humidity sensor. BME280 sensors are also supported and add air pressure readings (real and normalized).
Communication is done through ESP-Now protocol to save a huge amount of power compared to regular WiFi.
It needs a ESP-Now Gateway to receive its output.
+# Sensors supported
+- SI7021 for temperature, humidity and dew point
+- BME280 for temperature, humidity, dew point, pressure, normalized pressure
+
# Features
- perfect for infrequent small data transmissions
- no need for full blown WiFi, connects and transmits data instantly
@@ -30,16 +34,20 @@ ESP-01 and ESP-01S do not have GPIO 16 available. To use them for deepsleep a sm
Pictures are available in the project's hardware folder.
# Message format
-ESPsensor sends a message with the following format: {"t":"sensor","n":"attic","ID":"abcdef","tmp":25.12,"hum":41.66","vin":3.30}
+ESPsensor sends a message with the following format: {"t":"sensor","n":"attic","ID":"abcdef","tmp":27.02,"hum":54.74,"dew":17.14,"prs":998.08,"prn":1008.54,"vin":3.31}
- t: device type. Value can be sensor, switch or anything else you define.
- n: device name. Value can be room name or any other name you give to the device.
- ID: ESPid, last 4 bytes of the ESP's mac address.
- tmp: temperature reading
- hum: humidity reading
+- dew: dew point estimation
+- prs: air pressure reading (only for BME280 sensor)
+- prn: normalized (sea level) air pressure reading as reported in North America (only for BME280 sensor)
- vin: ESP voltage. Good until about 2.9V. Best to change batteries when voltage falls below 3.00V
# Libraries
Si7021 by Felix Rusu
+BME280_Light by zen
# Plans
- add more sensor types
\ No newline at end of file