Flash Radiolink RC6GS v2 Firmware Using Linux

I’ve done this with my own RC6GS v2 and it worked. It may work with other radios from Radiolink, too. Do this at your own risk! — If unsure, don’t do it! It seems that the device will always present a mass storage device on the USB port – even if the firmware isn’t installed…

Edifier Remote Control RC10 Wrong Battery

A while ago, I got some stereo speakers named “R1280T” from Edifier. These came with a simple, three button, remote control labeled “RC10“. I always had problems using this remote, the range was poor and I needed to hold it directly in front of the left speaker to work (because that’s the one with the…

USB 3.0 PCIe Extension Cards

When it comes to USB 3.0 extension cards, using the PCI Express bus, only some come with an additional header, that allows connecting a power plug from the power supply (PSU). Why is that? There are several reasons, actually. Usually a x1 PCIe slot (the small ones) only delivers up to 25 W, per specification….

Override systemd unit files

Sometimes you may want to change one or a few values in a existing systemd unit or timer file, that has been installed by the package manager of your Linux distribution. Here is how. Finding the right place The systemd files that come with the software packages, usually get installed in a path like /usr/lib/systemd/system/…

Manjaro with systemd-boot (sd-boot)

This article describes how to remove the grub boot manager and use systemd-boot as boot loader/manager on an (U)EFI system with Manjaro being the only operating system installed. Usually, the ArchWiki is a very good source of information, when it comes to Linux in general and Manjaro in particular, since it is based on Arch….

Make a 24 V power supply from two 12 V supplies

Server power supplies, like the HP DPS-750RB, are available for a low price, especially if they have been used before. This makes them ideal for powering chargers that allow for or even require a DC input voltage. The downside is, that they only produce 12 V output voltage. Most chargers claim to be able to…

Make a floating ground 12 V server power supply

This article describes how to make a power supply with a so called floating ground from a regular server power supply. This is needed for example when connection multiple DC power sources in series to reach a higher voltage. To understand why this is necessary, please check out my other article about making a floating…

Turning on a HP DPS-750RB server power supply

There are many tutorials and how-tos on the web, that use a resistor or wire to connect two pads on the top of the rear edge, to turn on the power supply. I found this a little bit odd, since regularly, one needs to pull a certain pin to ground (GND), to turn on the…

Creating Named Devices Using udev

Many devices use USB to serial bridge ICs like the FT232, CH340 or CP2102. Not only micro-controller developer boards like the Arduino, but 3D printers or RC remotes and some flight controllers as well. Some µCs have even integrated USB interfaces and don’t need these chips at all. All these devices use a serial interface…

Powering the TS100 Soldering Iron Using a 18 V Power Tool Battery

The portable, STM32-powered TS100 soldering iron has a wide input voltage range from 12 V to 24 V. Since the resistance of the soldering tips doesn’t change, the power consumption will vary from about 17 W at 12 V to about 65 W at 24 V. To power the iron from a Lithium polymer (LiPo)…