Posts in 2024
  • Router overclocking

    Sunday, March 24, 2024 in Hacks

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    Real gaming router This is part 2 of the “Real gaming router” series of blog posts. Read Part 1 / Real gaming router first. Why? If you’ve seen part 1 of the “Real gaming router”, you know that the game performance in …

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  • Real gaming router

    Sunday, March 03, 2024 in Hacks

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    Update, 18th March 2024 Read Part 2 / Router overclocking for an update on performance. What is it? A TP-Link wireless router, with an external AMD Radeon GPU connected via PCIe, running Debian Linux and playing games: What makes this router so …

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Posts in 2023
  • 20 port USB-C charger

    Sunday, November 26, 2023 in Tools

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    A 20 port USB-C charger in use What is it? The 20 port USB-C charger can charge up to 20 USB-C devices from a single USB-C supply. Each charging port can deliver up to 7.5W (5W if all ports are in use) and is individually current limited. The …

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  • NVMe BIOS Option ROM

    Tuesday, October 31, 2023 in Computing

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    What is it? The NVMe BIOS Option ROM is a heavily modified version of iPXE, which can be integrated into a computers BIOS (or provided via a PCI card, USB flash drive, SD card, etc.). It allows x86 computers to boot from NVMe devices attached via …

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  • 2.5GbE PCIe NIC mod board

    Monday, October 23, 2023 in Hacks

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    What is it? This tiny mod board can be used to add 2.5 Gigabit Ethernet to devices that have PCIe available internally. It can for example be used to replace an existing 1 Gigabit PCIe NIC in embedded devices, upgrading them to 2.5 GbE connectivity. …

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  • Blinkekatze

    Tuesday, October 10, 2023 in Art

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    Wild Blinkekatzen in their natural habitat What is it? Blinkekatzen are a replacement PCB for commercially available silicone LED lights. The lights usually contain a battery, some RGB LEDs and an optical diffuser in a soft cat shaped translucent …

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  • ThinkPad T41/T43 USB-C

    Wednesday, September 13, 2023 in USB-C mods

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    What is it? USB-C PD trigger board with integrated high-power Step-Down converter to 16V. This board will negotiate 20V, 5A (100W) against a USB-C PD power supply and convert the bus voltage into 16V. This can be used to power various laptops like …

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  • HomeSwitch 4

    Friday, July 28, 2023 in Network

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    What is it? HomeSwitch-4 is a small, low-cost, open hardware, USB-C powered 4-port Gigabit ethernet switch, running OpenWRT. It’s VLAN-capable and can handle simple VPN and routing applications (CPU connected via 100 MBit/s). It uses a cheap …

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  • DC UPS (Lithium)

    Saturday, July 01, 2023 in Network

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    What is it? DC UPS is a lithium battery-powered uninterruptible power supply, which can provide backup power to devices like routers, switches, modems, single board computers, etc. In contrast to commercially available UPSes, it uses off-the-shelf …

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  • OLED nametag

    Saturday, June 03, 2023 in Art

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    Features Bright, sunlight readable OLED display Infinity constrast ratio Support for GIF animations WLAN AP support Web interface for management of animations Automatic brightness adjustment 8h+ runtime Links Hardware: KiCAD design files Firmware: …

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