diff --git a/README.md b/README.md
index 51062b41..85e67dca 100644
--- a/README.md
+++ b/README.md
@@ -223,7 +223,7 @@ Bluetooth low energy service UUID 0xFD6F, used by Google/Apple COVID-19 Exposure
 	#define COUNT_ENS		1	// enable ENS monitoring function
 	#define BLECOUNTER		1	// enable bluetooth sniffing
 	#define WIFICOUNTER		0	// disable wifi sniffing (improves BLE scan speed)
-	#define HAS_SENSOR_1		1	// optional: transmit ENS counter data to server
+	#define HAS_SENSOR_1		1	// optional, in board's hal file: transmit ENS counter data to server
 
 # SD-card
 
@@ -372,9 +372,9 @@ Hereafter described is the default *plain* format, which uses MSB bit numbering.
 
 The device listenes for remote control commands on LoRaWAN Port 2. Multiple commands per downlink are possible by concatenating them, but must not exceed a maximum of 10 bytes per downlink.
 
-Note: settings can be stored in NVRAM to make them persistant (reloaded during device startup / restart). To store settings, use command 0x20. 
+Note: settings can be stored in NVRAM to make them persistant (reloaded during device startup / restart). To store settings, use command 0x21. 
 
-Send for example `8386` as Downlink on Port 2 to get battery status and time/date from the device.
+Send for example `83` `86` as Downlink on Port 2 to get battery status and time/date from the device.
 <img src="img/paxcounter_downlink_example.png">
 
 0x01 set scan RSSI limit
diff --git a/include/payload.h b/include/payload.h
index 7ddbe1af..bf6a4577 100644
--- a/include/payload.h
+++ b/include/payload.h
@@ -1,6 +1,7 @@
 #ifndef _PAYLOAD_H_
 #define _PAYLOAD_H_
 
+#include "sensor.h"
 #include "sds011read.h"
 
 // MyDevices CayenneLPP 1.0 channels for Synamic sensor payload format
diff --git a/platformio_orig.ini b/platformio_orig.ini
index 980261c4..48d42c5c 100644
--- a/platformio_orig.ini
+++ b/platformio_orig.ini
@@ -57,7 +57,7 @@ extra_scripts = pre:build.py
 otakeyfile = ota.conf
 lorakeyfile = loraconf.h
 lmicconfigfile = lmic_config.h
-platform_espressif32 = espressif32@3.1.1
+platform_espressif32 = espressif32@3.2.0
 monitor_speed = 115200
 upload_speed = 115200 ; set by build.py and taken from hal file
 display_library = ; set by build.py and taken from hal file
diff --git a/src/paxcounter_orig.conf b/src/paxcounter_orig.conf
index 3ce74821..a21ace1f 100644
--- a/src/paxcounter_orig.conf
+++ b/src/paxcounter_orig.conf
@@ -31,11 +31,6 @@
 #define COUNT_ENS                       1       // count found number of devices which advertise Exposure Notification Service
                                                 // set to 1 if you want to enable this function [default=0]
 
-// for additional sensors (added by some user)
-#define HAS_SENSOR_1                    1       // set to 1 to enable data transfer of user sensor #1 (also used as ENS counter) [default=0]
-#define HAS_SENSOR_2                    0       // set to 1 to enable data transfer of user sensor #2 [default=0]
-#define HAS_SENSOR_3                    0       // set to 1 to enable data transfer of user sensor #3 [default=0]
-
 /* Note: guide for setting bluetooth parameters
 *
 * |< Scan Window >       |< Scan Window >       | ... |< Scan Window >       |