Projekt IoT

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IoT - Internet of Things

some project ideas and notes regarding Arduino, ESP8266, ESP32 and other micro controllers

  • Arduino Nano with 433 MHz data transfer
  • ESP-01 for shutter control
  • ESP-12 for LED switch
  • ESP-12 for laundry room air control
  • SonOff with own firmware and tasmota devices
 https://github.com/arendst/Sonoff-Tasmota/wiki

Arduino IDE Inofficial Boards

look here for an overview:

ATTiny

Most ATTinys: https://github.com/SpenceKonde/ATTinyCore

Wiring

https://startingelectronics.org/tutorials/AVR-8-microcontrollers/ATtiny2313-tutorial/P8-TC0-polled-timer/ATTINY2313-TC0-polled.png

  • Vcc can also be 3.3V
  • C1 can have bigger capacity for unstable voltage
  • R1 can be higher values

Programmer

I have an USBasp. Program with avrdude. Works integrated in Arduino IDE. Ignore warning "avrdude: warning: cannot set sck period. please check for usbasp firmware update.".

Numbering of Connector is 

1 3 5 7 9
2 4 6 8 10

Need to connect Vcc, Gnd, Miso(1), Mosi, Reset and Sck

New chip needed 0.5MHz for correct timing with delay()

Needed to add this udev rule 

echo 'SUBSYSTEMS=="usb", ATTRS{idVendor}=="16c0", ATTRS{idProduct}=="05dc", GROUP="dialout", MODE="0660"' | sudo sh -c 'cat >/etc/udev/rules.d/50-USBasp.rules'

ESP8266

https://github.com/esp8266/Arduino

Domoticz

This is a home automation system that is natively supported by tasmota devices via mqtt

Installation

Old Repo
sudo /usr/sbin/useradd -U -g domoticz -m -r domoticz
  • Edit section Service in /usr/lib/systemd/system/domoticz.service (ports, logging, db)
[Service]
ExecStart=/opt/domoticz/domoticz -notimestamps -syslog -www 8888 -sslwww 4343 -dbase domoticz.db
WorkingDirectory=/home/domoticz
User=domoticz
Group=domoticz
Restart=always
  • Activate new service file, start domoticz and check status
sudo systemctl daemon-reload
sudo systemctl enable domoticz
sudo systemctl start domoticz
sudo systemctl status domoticz
Self Compiled

domoticz.service

[Unit] Description=Domoticz 4 (JoBa Edition) Wants=nss-lookup.target After=network.target [Service] PIDFile=/run/domoticz/domoticz.pid #ExecStart=/opt/domoticz/domoticz -daemon -syslog -log /var/log/domoticz.log -www 8080 -sslwww 8443 ExecStart=/opt/domoticz/domoticz -daemon -syslog -log /var/log/domoticz.log -pidfile /run/domoticz/domoticz.pid -www 8888 -sslwww 8443 ExecReload=/bin/kill -HUP $MAINPID ExecStop=/bin/kill -KILL $MAINPID User=domoticz Group=domoticz [Install] WantedBy=multi-user.target

In domoticz.spec adapt APPVERSION, APPHASH and Version prefix # # spec file for package domoticz # # Copyright (c) 2014 SUSE LINUX Products GmbH, Nuernberg, Germany. # Copyright (c) 2014-2016 Guillaume GARDET <guillaume@opensuse.org> # Copyright (c) 2018 Joachim Banzhaf <joachim.banzhaf@gmail.com> # # All modifications and additions to the file contributed by third parties # remain the property of their copyright owners, unless otherwise agreed # upon. The license for this file, and modifications and additions to the # file, is the same license as for the pristine package itself (unless the # license for the pristine package is not an Open Source License, in which # case the license is the MIT License). An "Open Source License" is a # license that conforms to the Open Source Definition (Version 1.9) # published by the Open Source Initiative. # Please submit bugfixes or comments via http://bugs.opensuse.org/ # # # Hash can be found on Github, select tag, look for "Last commit xxxx" under the Clone/Download button # %define APPVERSION 9700 %define APPHASH 2772d9f Name: domoticz Summary: Domoticz is a very light weight Home Automation System Version: 4.%{APPVERSION} Release: 0 License: GPL-3.0+ Group: Productivity/Other Url: http://www.domoticz.com/ Source0: %{name}-%{version}.tar.gz Source1: domoticz.service BuildRoot: %{_tmppath}/%{name}-%{version}-build BuildRequires: cmake BuildRequires: gcc-c++ BuildRequires: pkgconfig BuildRequires: fdupes BuildRequires: openssl-devel BuildRequires: python3-devel BuildRequires: boost-devel >= 1.55 BuildRequires: curl-devel BuildRequires: libusb-devel BuildRequires: openzwave BuildRequires: libopenzwave-devel BuildRequires: libudev-devel BuildRequires: git BuildRequires: sqlite BuildRequires: sqlite-devel BuildRequires: python3-devel Requires: sqlite Requires: python3-devel BuildRequires: systemd-rpm-macros %{?systemd_requires} %description Domoticz is a very light weight Home Automation System that lets you monitor and configure various devices like: Lights, Switches, various sensors/meters like Temperature, Rain, Wind, UV, Electra, Gas, Water and much more. Notifications/Alerts can be sent to any mobile device. Supported platforms: Package for openSUSE 42.2 by Joachim.Banzhaf@gmail.com Unix/Linux, (openSUSE, Raspberry Pi/Cubieboard recommended) Windows %prep %setup -q %build cat > appversion.default << EOL #define APPVERSION %{APPVERSION} #define APPHASH "%{APPHASH}" #define APPDATE `date +%s` EOL # mkdir build/ pushd build/ cmake .. \ -DCMAKE_BUILD_TYPE=Release \ -DUSE_STATIC_BOOST=OFF \ -DUSE_STATIC_OPENZWAVE=OFF make popd %install pushd build/ %make_install popd install -m 0644 -D %{SOURCE1} %{buildroot}/%{_unitdir}/%{name}.service # # Cleanup # rm -f %{buildroot}/opt/domoticz/scripts/dzVents/runtime/tests/scandir/.f3.lua.swp # %fdupes -s %{buildroot}/opt # # Setup system # mkdir -p %{buildroot}/run/domoticz mkdir -p %{buildroot}/var/log touch %{buildroot}/var/log/domoticz.log # install /usr/lib/tmpfiles.d/domoticz.conf mkdir -p %{buildroot}%{_tmpfilesdir} cat > %{buildroot}%{_tmpfilesdir}/domoticz.conf <<EOF # domoticz needs existing /run/domoticz/ to create domoticz.pid there # See tmpfiles.d(5) for details d /run/domoticz 0755 domoticz domoticz - EOF %pre getent group domoticz >/dev/null || groupadd -r domoticz getent passwd domoticz >/dev/null || \ useradd -r -g domoticz -d %{_sharedstatedir}/domoticz -s /sbin/nologin \ -c "domoticz daemon account" domoticz %if 0%{?_unitdir:1} %service_add_pre domoticz.service %endif %post %if 0%{?_unitdir:1} %service_add_post domoticz.service %endif %preun %if 0%{?_unitdir:1} %service_del_preun domoticz.service %endif %postun %if 0%{?_unitdir:1} %service_del_postun domoticz.service %endif %files %defattr(-,root,root) %dir %attr(0755,domoticz,domoticz) /opt/domoticz/ %dir %attr(0755,domoticz,domoticz) /run/domoticz/ %attr(-,domoticz,domoticz) /opt/domoticz/* %{_tmpfilesdir}/domoticz.conf %{_unitdir}/%{name}.service %attr(0644,domoticz,domoticz) /var/log/domoticz.log %changelog

Add to /usr/share/cmake/Modules/FindOpenSSL.cmake after failing find_library() calls 

set(OPENSSL_SSL_LIBRARY "/usr/lib64/libssl.so")
set(OPENSSL_CRYPTO_LIBRARY "/usr/lib64/libcrypto.so")

v=4.9700
zypper in libopenzwave-devel libopenssl-devel libcrypto41
mkdir -p /home/joachim/rpmbuild/SPECS /home/joachim/rpmbuild/SOURCES
wget -O domoticz.zip https://github.com/domoticz/domoticz/archive/${v}.zip
unzip domoticz.zip
tar czf /home/joachim/rpmbuild/SOURCES/domoticz-$v.tar.gz domoticz-${v}/
rpmbuild -ba /home/joachim/rpmbuild/SPECS/domoticz.spec
sudo rpm -Uhv /home/joachim/rpmbuild/RPMS/x86_64/domoticz-${v}-0.x86_64.rpm
sudo systemctl start domoticz.service

Configuration

https://github.com/arendst/Sonoff-Tasmota/wiki/Domoticz

  • On setup/hardware page create mqtt connection (host job4, port 1883, option flat/out) and one Dummy device for virtual switches
  • For each tasmota device function (switch, temp/hum, ...) click on "virtual sensor" (on hardware page at dummy device entry)
  • On setup/devices page look at idx values for the virtual sensor devices and configure tasmota device with them.

Cura Build

Prerequisites

git clone https://github.com/Ultimaker/Cura.git
git clone https://github.com/Ultimaker/cura-build

Follow instructions for CentOS in cura-build/README.md and try to adapt for opensuse 42.2 

sudo zypper in gcc-fortran python3 python3-pyserial python3-numpy python3-opengl python3-setuptools libstdc++-devel openssl openblas-devel gtk3-devel webkit2gtk3-devel gstreamer-devel python-wxWidgets-3_0 python-wxWidgets-3_0-devel
# pip3 install F2PY

F2PY not found -> build may fail

Installation

cmake fails because it needs python 3.5 while opensuse 42.2 only has 3.4 - end of story for now :(

Use app container for now (but how to use core functions directly?)

Feinstaubsensor

https://luftdaten.info/feinstaubsensor-bauen/

  • NodeMCU
  • SDS011
  • optional: BME280 (probably needs code change since they use DHT22)
  • USB powersupply
  • USB cable
  • 2 x Marley HT DN75, 87°
  • Gaze als Insektenschutz
  • 3 x Kabelbinder lang (für Gaze an Marley, Fixierung an Pfosten o.ä.) und kurz (Kabel/NodeMCU/SDS011/BME280) fixieren
  • ~20cm Plastikröhrchen Innendurchmesser 6mm (dunkel)

Cost ~25€

RFID Demo

https://github.com/miguelbalboa/rfid/blob/master/examples/AccessControl/AccessControl.ino

What is needed for an access control demo (might send mqtt status):

  • ESP8266 as central unit
  • RFID reader/writer
  • 1 RFID Card (Master)
  • n RFID Tags (ID "Cards")
  • USB Cable MicroUSB
  • LED for access granted or added: green
  • LED for access denied or removed or error: red (red+green: master mode)
  • Dupont cabling for reader (~10 f-f)
  • Breadboard

Cost ~5€

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