diff --git a/README.md b/README.md
index a3fb586b..ba287d48 100644
--- a/README.md
+++ b/README.md
@@ -9,6 +9,7 @@ Tutorial (in german language): https://www.heise.de/select/make/2019/1/155109923
 <img src="img/Paxcounter-Screen.png">
 <img src="img/TTGO-case.jpg">
 <img src="img/TTGO-curves.jpg">
+<img src="img/Paxcounter-LEDmatrix.jpg">
 
 # Use case
 
@@ -54,7 +55,7 @@ Depending on board hardware following features are supported:
 - Real Time Clock (Maxim DS3231 I2C)
 - IF482 (serial) and DCF77 (gpio) time telegram generator
 - Switch external power / battery
-- 64x16 pixel LED Matrix display (similar to [this model](https://www.instructables.com/id/64x16-RED-LED-Marquee/))
+- 64x16 pixel LED Matrix display (similar to [this model](https://www.instructables.com/id/64x16-RED-LED-Marquee/), can be ordered on [Aliexpress](https://www.aliexpress.com/item/P3-75-dot-matrix-led-module-3-75mm-high-clear-top1-for-text-display-304-60mm/32616683948.html))
 
 Target platform must be selected in [platformio.ini](https://github.com/cyberman54/ESP32-Paxcounter/blob/master/platformio.ini).<br>
 Hardware dependent settings (pinout etc.) are stored in board files in /hal directory. If you want to use a ESP32 board which is not yet supported, use hal file generic.h and tailor pin mappings to your needs. Pull requests for new boards welcome.<br>
@@ -93,7 +94,7 @@ If your device has a **real time clock** it can be updated bei either LoRaWAN ne
 
 # Building
 
-Use <A HREF="https://platformio.org/">PlatformIO</A> with your preferred IDE for development and building this code. Make sure you have latest PlatformIO version, **at least v4.0.0a15**.
+Use <A HREF="https://platformio.org/">PlatformIO</A> with your preferred IDE for development and building this code. Make sure you have latest PlatformIO version.
 
 # Uploading
 
diff --git a/build.py b/build.py
index e8f3d009..f7cf7e79 100644
--- a/build.py
+++ b/build.py
@@ -8,16 +8,22 @@ import requests
 from os.path import basename
 from platformio import util
 
+try:
+    import configparser
+except ImportError:
+    import ConfigParser as configparser
+
 Import("env")
 
 # get platformio environment variables
-project_config = util.load_project_config()
+config = configparser.ConfigParser()
+config.read("platformio.ini")
 
 # get platformio source path
-srcdir = env.get("PROJECTSRC_DIR").replace("\\", "/")
+srcdir = env.get("PROJECTSRC_DIR")
 
 # check if lmic config file is present in source directory
-lmicconfig = project_config.get("common", "lmicconfigfile")
+lmicconfig = config.get("common", "lmicconfigfile")
 lmicconfigfile = os.path.join (srcdir, lmicconfig)
 if os.path.isfile(lmicconfigfile) and os.access(lmicconfigfile, os.R_OK):
     print "Parsing LMIC configuration from " + lmicconfigfile
@@ -25,14 +31,14 @@ else:
     sys.exit("Missing file " + lmicconfigfile + ", please create it! Aborting.")
 
 # check if lora key file is present in source directory
-lorakeyfile = os.path.join (srcdir, project_config.get("common", "lorakeyfile"))
+lorakeyfile = os.path.join (srcdir, config.get("common", "lorakeyfile"))
 if os.path.isfile(lorakeyfile) and os.access(lorakeyfile, os.R_OK):
     print "Parsing LORAWAN keys from " + lorakeyfile
 else:
     sys.exit("Missing file " + lorakeyfile + ", please create it! Aborting.")
 
 # check if ota key file is present in source directory
-otakeyfile = os.path.join (srcdir, project_config.get("common", "otakeyfile"))
+otakeyfile = os.path.join (srcdir, config.get("common", "otakeyfile"))
 if os.path.isfile(otakeyfile) and os.access(otakeyfile, os.R_OK):
     print "Parsing OTA keys from " + otakeyfile
 else:
@@ -51,7 +57,7 @@ repository = mykeys["BINTRAY_REPO"]
 apitoken = mykeys["BINTRAY_API_TOKEN"]
 
 # get bintray upload parameters from platformio environment
-version = project_config.get("common", "release_version")
+version = config.get("common", "release_version")
 package = str(env.get("PIOENV"))
 
 # put bintray user credentials to platformio environment
@@ -89,17 +95,20 @@ def publish_bintray(source, target, env):
         "X-Bintray-Override": "1"
     }
 
-    r = requests.put(
-        url,
-        data=open(firmware_path, "rb"),
-        headers=headers,
-        auth=(user, apitoken))
+    r = None
+    
+    try:
+        r = requests.put(url,
+                         data=open(firmware_path, "rb"),
+                         headers=headers,
+                         auth=(user,apitoken))
+        r.raise_for_status()
+    except requests.exceptions.RequestException as e:
+        sys.stderr.write("Failed to submit package: %s\n" %
+                         ("%s\n%s" % (r.status_code, r.text) if r else str(e)))
+        env.Exit(1)
 
-    if r.status_code != 201:
-        print("Failed to submit package: {0}\n{1}".format(
-            r.status_code, r.text))
-    else:
-        print("The firmware has been successfuly published at Bintray.com!")
+    print("The firmware has been successfuly published at Bintray.com!")
 
 # put build file name and upload command to platformio environment
 env.Replace(
diff --git a/img/Paxcounter-LEDmatrix.jpg b/img/Paxcounter-LEDmatrix.jpg
new file mode 100644
index 00000000..cb69c9ce
Binary files /dev/null and b/img/Paxcounter-LEDmatrix.jpg differ
diff --git a/platformio.ini b/platformio.ini
index a413a17b..64e7fb1a 100644
--- a/platformio.ini
+++ b/platformio.ini
@@ -6,33 +6,33 @@
 
 ; ---> SELECT TARGET PLATFORM HERE! <---
 [platformio]
-env_default = generic
-;env_default = ebox
-;env_default = eboxtube
-;env_default = ecopower
-;env_default = heltec
-;env_default = heltecv2
-;env_default = ttgov1
-;env_default = ttgov2
-;env_default = ttgov21old
-;env_default = ttgov21new
-;env_default = ttgobeam
-;env_default = ttgofox
-;env_default = lopy
-;env_default = lopy4
-;env_default = fipy
-;env_default = lolin32litelora
-;env_default = lolin32lora
-;env_default = lolin32lite
-;env_default = wemos32oled
-;env_default = octopus32
-;env_default = ecopower, eboxtube, heltec, ttgobeam, lopy4, lopy, ttgov21old, ttgov21new, ttgofox
+default_envs = generic
+;default_envs = ebox
+;default_envs = eboxtube
+;default_envs = ecopower
+;default_envs = heltec
+;default_envs = heltecv2
+;default_envs = ttgov1
+;default_envs = ttgov2
+;default_envs = ttgov21old
+;default_envs = ttgov21new
+;default_envs = ttgobeam
+;default_envs = ttgofox
+;default_envs = lopy
+;default_envs = lopy4
+;default_envs = fipy
+;default_envs = lolin32litelora
+;default_envs = lolin32lora
+;default_envs = lolin32lite
+;default_envs = wemos32oled
+;default_envs = octopus32
+;default_envs = ecopower, eboxtube, heltec, ttgobeam, lopy4, lopy, ttgov21old, ttgov21new, ttgofox
 ;
 description = Paxcounter is a proof-of-concept ESP32 device for metering passenger flows in realtime. It counts how many mobile devices are around.
 
 [common]
 ; for release_version use max. 10 chars total, use any decimal format like "a.b.c"
-release_version = 1.7.61
+release_version = 1.7.62
 ; DEBUG LEVEL: For production run set to 0, otherwise device will leak RAM while running!
 ; 0=None, 1=Error, 2=Warn, 3=Info, 4=Debug, 5=Verbose
 debug_level = 3
@@ -51,7 +51,7 @@ lib_deps_lora =
     ;MCCI LoRaWAN LMIC library@2.3.2
     https://github.com/mcci-catena/arduino-lmic.git
 lib_deps_display =
-    U8g2@>=2.25.7
+    U8g2@>=2.26.13
 lib_deps_matrix_display =
     https://github.com/Seeed-Studio/Ultrathin_LED_Matrix.git
 lib_deps_rgbled =
@@ -63,8 +63,8 @@ lib_deps_sensors =
     Adafruit BME280 Library@1.0.8
 lib_deps_basic =
     ArduinoJson@^5.13.1
-    Timezone@^1.2.2
-    RTC@^2.3.3
+    76@^1.2.2 ;Timezone by Jack Christensen
+    274@^2.3.3 ;RTC by Michael Miller
     SimpleButton
 lib_deps_all =
     ${common.lib_deps_basic}