In the Scheduling on Unrelated Parallel Machines problem, the goal is to find an jobs/machines assignment to minimize the overall makespan. In other words, the goal is to have the best balance between machines.
Continue reading Unrelated parallel machine scheduling problem heuristic : Genetic algorithm
Let’s say that we have just modified our filling process for our 1500ml soda bottles.
We do an extract from our measurement system on the last 200 bottles produced before the modification, and 50 after. Continue reading Did I improve my process ? The statistical way with Python
The automatic identification system (AIS) is an automatic tracking system that uses transponders on ships and is used by vessel traffic services (VTS). AIS information supplements marine radar, which continues to be the primary method of collision avoidance for water transport.
Continue reading AIS receiver on a Raspberry Pi with RTL-SDR
This is is a short demonstration of a co-simulation between Siemens PLCSIM Advanced and C#.
The goal is simple : have the ability to conditionally change inputs.
We’ll do a proof of concept with a small exemple for a safety relay monitored by a feedback.
Continue reading Automation virtual commissioning : PLCSIM advanced 2.0 with C#
The goal of the project is the integration of a Saunier Duval boiler with a Domoticz home automation system.
It’s possible to update a RFLink gateway from your Pi running Raspbian and Domoticz.
Before :
After :
Install Avrdude :
pi@pi:~ $ sudo apt-get install avrdude
Continue reading Update RFLink Gateway on Raspbian with Domoticz
Monitoring my Raspberry Pi network behind NAT is easy using OpenVPN and Zabbix agent/server.
In a few cases, I need to monitor hosts without any possibilities to install OpenVPN and Zabbix agent on it (switchs, routers, wemos, arduinos…).
Continue reading Monitor a host from a Zabbix Agent (ping / ICMP)
Once the server is ready, we can start to configure our agents.
Install the zabbix-agent :
sudo apt-get install zabbix-agent
Edit the configuration file :
sudo vi /etc/zabbix/zabbix_agentd.conf
Continue reading Monitor a Raspberry Pi using Zabbix Agent on Raspbian
Initial steps :
– OpenVPN server
– OpenVPN client
– Rsync server
Then we are ready for this step !
Create folders for our daily backups for “bart” :
sudo mkdir -p /var/backups/raspberry/bart/daily/{1..7}
Continue reading Raspberry pi backup using Rsync server and OpenVPN
Create/edit the Rsync server configuration file :
sudo vi /etc/rsyncd.conf
Here is my configuration file:
uid = nobody gid = nogroup max connections = 50 socket options = SO_KEEPALIVE address = 10.8.0.1 [raspberry] path = /var/backups/raspberry/ comment = Rpis backups read only = no