I’m sure a lot of you have seen my previous post “My Humble Homelab (With Raspberry Pi Rack)”.
I’ve made a few big changes to my server rack since that post so I thought I’d share. Most notably, I’ve gotten rid of my 2 Dell R710 enterprise servers and replaced them with…10 Raspberry Pi 4 Model B.
Below is a table explaining in order, exactly what I’ve got in the rack now.
Users of the Raspberry Pi 4 mini computer are puzzling over an issue where setting some display resolutions have the side-effect of killing the Wi-Fi connection.
The problem was noticed by developer Enrico Zini, who is working on a digital signage box using the Raspberry Pi 4. “One full day of crazy debugging, and the result is that if the Raspberry Pi 4 outputs HDMI at a resolution of 2560×1440, the Wi-Fi stops working,” he reported.
If you’ve been looking for a robot chassis that can accommodate a wide range of computing and sensor hardware, then look no further than the TurtleBot. As explained here, while this TurtleBot3 can be purchased in both a “Burger” or “Waffle” configuration, it’s entirely possible for you to build this open source device yourself.
Raspberry Pi is definitely the world’s most popular single-board computer brand, and that popularity is primarily a result of their low cost and small size. Those factors make Raspberry Pi boards ideal for compact projects, and for portable devices in particular. Oracle, however, has taken the complete opposite approach and built a supercomputer made from a cluster of 1,060 Raspberry Pis.
In 1997 a sophisticated PC CD-ROM anti tamper software was introduced by Sony DADC known as SecuROM. SecuROM did much to frustrate paying customers but very little to stop piracy. Here is the story of the most pointless and frustrating DRM in the PC world.
Engineers from NASA’s Jet Propulsion Laboratory and CalTech have developed a quadcopter drone that can be fired from a cannon as a method of safe deployment in crowded and wind-driven environments.
Known as SQUID (Streamlined Quick Unfolding Investigation Drone), the drone is a football-shaped quadcopter that is launched from a tube, deploys its rotors, and stabilizes itself before flying to its objective. The design offers minimal risk during takeoff (avoiding obstacles, debris, people, etc.), and becomes airborne faster than conventional drones.
Today we are going to look at the somewhat mundane but absolutely essential subject of supplying power for your electronic projects. Trust me, this stuff is important! Electronic devices typically require either 5 or 3.3 volts, sometimes both.
Other common voltage requirements include 6 and 12 volts for motors and displays. Some complex designs (ie. a robot) require several different supplies with different current capabilities.
When you build your latest robot or IoT device you’ll need to consider how you’ll supply these voltages in the real world. On the workbench you can use a bench power supply if you have one, a USB adapter or even the USB port on a computer (just like with the Arduino).
Test Results Spreadsheet: https://docs.google.com/spreadsheets/…
Quick Reference Guide: https://github.com/thehookup/Holiday_…
Pretty Power Consumption Guide: https://github.com/thehookup/Holiday_…
Bluetooth mesh connected and motion detected lighting solution for better mobility and accessibility.