Have to read some more about UART on arduino.

Propably MAX2323 is needed for TTL conversion.

ARDUINO_NANO_CONTROLL/platformio.ini

@@ -0,0 +1,18 @@
+; PlatformIO Project Configuration File
+;
+;   Build options: build flags, source filter
+;   Upload options: custom upload port, speed and extra flags
+;   Library options: dependencies, extra library storages
+;   Advanced options: extra scripting
+;
+; Please visit documentation for the other options and examples
+; https://docs.platformio.org/page/projectconf.html
+
+[env:nanoatmega328]
+platform = atmelavr
+board = nanoatmega328
+framework = arduino
+lib_deps = 
+	adafruit/DHT sensor library@^1.4.6
+	featherfly/SoftwareSerial@^1.0
+board_build.mcu = atmega328p