Author: raspberryfield
Enterprise Data Warehouse – Backend vs. Frontend
Enterprise Data Warehouse Waste
What is Business Intelligence? — A Brief Look at the Definition
My Take on Business Intelligence This is my view on Business Intelligence: Definition Business Intelligence (BI) is the work with Information technology (IT) to gather, structure, and present information that will support an organization’s intelligence (OI). Goal The goal with BI is to provide the right information, in the right format to the right user […]
Is it wrong to teach children that hard work pays off?
We are still in a very long period of low-interest rate and there’s cheap money everywhere. Banks basically give money away. With a lot of fresh money in the system, that leads eventually to inflation. That means that savings from years of hard work won’t buy you as much as they once could. Why don’t […]
The Overuse of Pie Charts – the Abuse of Data Visualization
With self-service BI-tools like Power BI, Tableau and Qlik, it has never been easier to visualize data. Now when every office clerk can make astonishing beautiful dashboards, there is one thing I rather not see on those visualizations…pie charts. If you don’t understand why, I recommend you to read “Save the Pies for Dessert” by […]
IT recruiters that don’t know their domain….
About IT recruiters that don’t know their domain…. Interesting reading: https://www.quora.com/Why-are-software-developers-rude-to-recruiters-who-are-trying-to-get-them-a-job [2020-08-09]
Getting started with Home Assistant Core – Installing
This is my notes about how I installed Home assistant Core on a Raspberry Pi 3. Things are changing extremely fast in this community driven open source world of home automation. I don’t expect this to be relevant for very long… Index Introduction Prerequisites Install Home Assistant Core Onboarding Make Home Assistant run automatically Conclusion […]
MQTT Mosquitto – Raspberry Pi
Let’s get serious about sending messages between Raspberry Pis on your home network! Info. The code presented in this blogpost is now maintained here: https://github.com/raspberryfield/python-mqtt-examples-git. Index Prerequisites Introduction Install Mosquitto Testing Mosquitto Installing MQTT Python Library – Paho Write a Test Publisher Client Write a Test Subscriber Client Test the Publisher Client from another Device […]
Stickers on a Laptop? — It’s probably a Developer!
Stickers on a Laptop? — It’s probably a Developer!
DS18B20 Temperature Probe – Raspberry Pi
Let’s read the temperature with a DS18B20 Temperature Probe, connected to a Raspberry Pi! Index Introduction Prerequisites Hardware Setup Software Approach Using ‘w1thermsensor’ python library Conclusion Resources Introduction Recently I bought a DS18B20 Temperature Probe from my local electronic store. I want to do some temperature measures and this probe works outdoors, indoors, is waterproof, […]
Headless Raspberry Pi
Sometimes you want to use and be able to configure a single board computer (like the Raspberry Pi) without a monitor, keyboard, and mouse. Such a setup is called headless setup. This post will teach you how to do this. Index Introduction Prerequisites Configure Wi-Fi and ssh Get the IP address Connect via ssh using […]