Techopolis sends our warmest congratulations to the Syrian people on the occasion of their liberation. We wish them a bright and prosperous future and we hope Assad is the first of many tyrants to...
This is Part 3 of the #LoRa series. If you didn’t read the previous post, check out Part 1 and Part 2. This is not the final draft. I will come back and keep this draft updated. Feel free t...
Yes, you’re right. The last article I wrote was in October 2023. Why did it take so long? Am I broke now from running this blog? If you follow ThePrimeagen and Fireship, you should be aware of the...
While doing research for the upcoming LoRa: Writing our own Protocol - Part 3 - Protocol Draft I discovered some issues that will be a huge headache in the future. The LoRaWAN Semtech Packet Forwar...
Is it possible to erase the firmware of an ESP32 from within itself? Let’s try to find out. You might ask yourself: why do you even need a function like that? - I mean… why not? If you want to er...
This is Part 2 of the #LoRa series. If you didn’t read the previous post, check it out here. Requirements Before we start, you should have basic knowledge in ESP32 and be familiar with the “A...
So, I was planing to write about some #LoRa projects in the future after I was done with the #MAVLink series. However I stumbled few days ago over a tweet from @sulfuroid. Here is some kind of m...
Quick MAVLink Introduction MAVLink (Micro Air Vehicle Link) is a very lightweight and awesome messaging protocol for communication between unmanned vehicle and Ground Control Station (GCS). MAVLink...
TL;DR Pull RST pin 11 HIGH before Ethernet.begin(). Optionally pull SS pin 10 LOW before Ethernet.begin() and HIGH afterwards. Prevously I wrote about the madness I had with several Ethernet M...
This blog post is a tribute to all those out there that resist and fight against tyranny. Skip to RNode LoRa TNC installation. AirChat and Fldigi Around nine years ago I stumbled over a Vice ...
Yes, this is another of those “a friend of mine asked me” stories. A friend needed help in auditing his (self build) RFID credit system. He contacted me and another researcher friend of mine. My f...
Yes, I know. Air-Gap means that a network should be physically isolated from any unsecure networks. But, what if I need to reach a database via internet or VPN Tunnel? Some kind of semi Air-Gap per...
TL;DR Open a LAN game with a demo account, kick yourself out, join a self-hosted minecraft server. Spoof your player name to join with multiple demo accounts. Update Unfortunately, this “Bu...
TL;DR Simply, just add a RC circuit to the RST and GND pins of your Arduino Ethernet Shield Clone. Resistor and Capacitor values are in the last chapter. The Arduino Ethernet Shield is the per...
Hello and welcome to Technopolis, I am very happy to announce my new Blog and upcoming YouTube channel. In the coming weeks, I will try my best to publish some real cool tutorials about some inter...
