updated doc

README.md

@@ -2,17 +2,17 @@
 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. 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 <a href="https://github.com/cctweaker/ESPGW-Now">ESP-Now Gateway</a> to receive its output.
+It needs a <a href="https://github.com/cctweaker/ESPGW-Now">ESP-Now Gateway</a> to receive the data and forward it to MQTT.
 
 # Sensors supported
-- SI7021 for temperature, humidity and dew point
+- SI7021 for temperature, humidity, 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 (50 - 100ms on time)
-- much faster than other solutions that rely on Wifi (secure MQTT takes about 15-20 seconds)
-- much faster trasnfer speed compared to other 2.4GHz protocols
+- no need for full blown WiFi, connects and transmits data instantly (172ms total wake time)
+- much faster than other solutions that rely on Wifi (about 8-10 seconds, while secure MQTT takes about 15-20 seconds)
+- much faster transfer speed compared to other 2.4GHz protocols
 - lower total power consumption, great for battery operated sensors/buttons
 - uses a parallel network for IoT without hoarding your DHCP leases in WiFi (just the gateway is connected)
 
@@ -35,7 +35,7 @@ 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: <code>{"t":"ESPsensor","v":2.01,"ID":"abcdef","tmp":27.02,"hum":54.74,"dew":17.14,"prs":998.08,"prn":1008.54,"vin":3.31}</code>
+ESPsensor sends a message with the following format: <code>{"t":"ESPsensor","v":2.01,"ID":"abcdef","vcc":3482,"tmp":27.02,"hum":54.74,"dew":17.14,"prs":998.08,"prn":1008.54}</code>
 - t: device type, value can be sensor, switch or anything else, depending on firmware
 - v: firmware version
 - ID: ESPid, last 3 bytes of the ESP's mac address in hex format, unique per ESP chip
@@ -44,7 +44,7 @@ ESPsensor sends a message with the following format: <code>{"t":"ESPsensor","v":
 - 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: raw value of ESP voltage
+- vcc: raw value of ESP voltage
 
 # Raw voltage
 To show correct ESP voltage, measure voltage after the regulator (should be 3.29 - 3.31) and calculate the correction factor.