Guide

Science

Are Supercapacitors the better Batteries?

I have often wondered why use batteries and not supercapacitors. Supercapacitors are super like Superman or Superwoman. Otherwise, they only would be called “Capacitors.” Right? Where are they “super” and where not? Where can we use them, and how? And the most important question: Are they better than batteries?

Read More
Interesting

How to Create Fillable PDF Form for Free

Kevin Stratvert provides this step-by-step tutorial, learn how to create a fillable PDF form for free using LibreOffice. LibreOffice is free and open source software that allows you to create forms and export as a PDF form. When you distribute your form, others can fill out your form easily. Once they complete your form, they […]

Read More
Microsoft

How to use Microsoft PowerToys

In this step-by-step tutorial, Kevin Stratvert teaches us how to get and use Microsoft PowerToys. With Power Toys, use a color picker to get the HEX, RGB, etc. value for any color on your screen, snap windows using Fancy Zones, preview SVG and markdown files in File Explorer, resize images in bulk, rename files in […]

Read More
Power Apps

How to Use the New Approvals App in Microsoft Teams

In this step-by-step tutorial by Kevin Stratvert, learn how to use the NEW Approvals app in Microsoft Teams. The Approvals app is available as a personal app for all Microsoft Teams users. The Approvals app provides a simple way to bring auditing, compliance, accountability, and workflows to both structured and unstructured Approvals in Teams. Learn […]

Read More
Maker Solar

Should You Build or Buy a 5V USB Portable Solar Power Charger?

In this video, GreatScott! takes a closer look at a commercial 5V USB portable solar power charger. After measuring its output power and pretty much “short reviewing” the product, I will try to make my own DIY version that should cost around the same while outputting more power! Let’s get started!

Read More
Maker Raspberry Pi

Build an Off-the-Grid Wi-Fi System for Voice Communications

Null Byte explains how to Use Android & Raspberry Pi for Local Voice communications. It can be difficult to communicate off the grid when there’s no infrastructure. That’s also true when you’re in situations where there is no cellular service or reliable Wi-Fi hotspots, such as a convoy of vehicles that want to talk to […]

Read More
Containers Raspberry Pi

Raspberry Pi Server Based on Docker with VPN Remote Access and More

If you ever wanted to up your home networking game with backup to Dropbox and secure remote access from everywhere through your own VPN, all based on Docker containers, then check out what Andreas Spiess has done. In this video, he covers: Install Docker with many containers like Mosquitto, Node-Red, Grafana, influxDB, Postgres, Portainer, and […]

Read More