Installation of EmonCMS

Download offical EmonCmd Raspberry PI image
Burn the image to and sd-card (min. 12GB)
Enable SSH-Access

Create a file called "ssh" on "boot". (no file extension!)
Configure WiFi

Create a file "wpa_supplicant.conf" on "boot" with: ''' country=DE trl_interface=DIR=/var/run/wpa_supplicant GROUP=netdev update_config=1

network={ ssid="your-ssid" psk="your-password" } '''
Create a User Account Open your Web-Browser and connect with emonpi.local or your Rapsp's ip-address Click and Register and create your first account.

SBFspot installation and configuration

Open "/boot/config.txt" and remove "dtoverlay=pi3-disable-bt" and reboot.
Reinstall pi-bluetooth

sudo apt-get purge pi-bluetooth sudo apt-get install pi-bluetooth
Enable bluetooth

Increase size of /var/temp/

sudo umount -l /var/tmp sudo mount -t tmpfs -o size=104857600,mode=1777 overflow /var/tmp

Command "df" shows partitions and their size
Install SBFspot

curl -s https://raw.githubusercontent.com/sbfspot/sbfspot-config/master/sbfspot-config | sudo bash In Config-Dialog select Connection->Bluetooth and select your SMA-Inverter(s)
MQTT Publishung

sudo apt install python3-pip

Install CircuitPython

sudo pip3 install --upgrade adafruit-python-shell wget https://raw.githubusercontent.com/adafruit/Raspberry-Pi-Installer-Scripts/master/raspi-blinka.py sudo python3 raspi-blinka.py

Accept, if you've been asked to update the default python installation to Version 3
Install ADS1x15 Library

pip3 install adafruit-circuitpython-ads1x15
Install PAHO-MQTT Library

pip3 install paho-mqtt
Download Python script to Raspberry Pi
Register new service