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--- projects:farmrobot:batteriemanagement [2021/03/21 18:44]
jonas
+++ projects:farmrobot:batteriemanagement [2021/03/21 19:02] (current)
jonas [Modbus Python and Watson-IoT MQTT publish on Raspberry Pi 4B]
@@ Line 104: / Line 104: @@
 ===== Modbus Python and Watson-IoT MQTT publish on Raspberry Pi 4B =====
-Using FTDI USB adapter which can be interfaced on /dev/ttyUSB0
+Using FTDI USB adapter which can be interfaced on /dev/ttyUSB0\\
+Adding the current user to the "dialout" user group to access serial interfaces without root permissions:
     sudo adduser pi dialout
+Installing prerequisites:\\
     sudo apt install python3
     wget https://bootstrap.pypa.io/get-pip.py
     sudo python3 get-pip.py
-    sudo pip install pymodbus
+    sudo pip install pymodbus\\
-\\
+ModbusSerialClient is the Modbus client that is used to interface the registers on the BMS:
     from pymodbus.client.sync import ModbusSerialClient
-Using IBM Watson IoT platform
+=== IBM Watson IoT platform ===
 Creating a new device and gathering credentials: https://q74k3e.internetofthings.ibmcloud.com/dashboard/devices/browse/
@@ Line 129: / Line 131: @@
     pip install wiotp-sdk
-Modbus communication implementation based on: https://github.com/clarkni5/tinybms/blob/master/python/tinybms.py
+Modbus communication implementation based on: https://github.com/clarkni5/tinybms/blob/master/python/tinybms.py\\
+=== Code: ===
 <file py pc_bms_modbus_mqtt.py>
 import numpy as np
@@ Line 234: / Line 237: @@
 ===== Web Interface to view and graph the data =====
+An easy way to set up a web interface is to host a node-red instance on a server, for example on a stationary Raspberry Pi 4, which can be accesses via network or can be made accessible with port forwarding from the internet.\\
 Setting up a Raspberry Pi 4B with docker and docker run portainer.
 Create a new Node-Red Stack with a compose file, which creates a node-red web instance on the device on port 1880.
@@ Line 256: / Line 261: @@
 networks:
   node-red-net:
-<\file>
+</file>
-The node-red webapp can then be accessed via "http://'ip-adress':1880"
+The node-red webapp can then be accessed via [[http://ip-adress:1880]]\\
+The Node-RED Dashboard module is needed to display the data with node-red\\
+To install, click the Menu Button and choose "Manage palette". Click the "Install" tab and search for "node-red-dashboard".\\
+Then click on install and install in the pop-up window. Then return to the main view.\\
+{{:projects:farmrobot:node-red-palette.png?600|}}

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