Posts in 2023
  • NVMe BIOS Option ROM

    Tuesday, October 31, 2023 in Computing

    Featured Image for NVMe BIOS Option ROM

    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 …

    Read more

  • Blinkekatze

    Tuesday, October 10, 2023 in Art

    Featured Image for Blinkekatze

    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 and some RGB LEDs in a cat shaped housing. Blinkekatzen expand on this …

    Read more

  • ThinkPad T41/T43 USB-C

    Wednesday, September 13, 2023 in USB-C mods

    Featured Image for ThinkPad T41/T43 USB-C

    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 …

    Read more

  • HomeSwitch 4

    Friday, July 28, 2023 in Network

    Featured Image for HomeSwitch 4

    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 …

    Read more

  • DC UPS (Lithium)

    Saturday, July 01, 2023 in Network

    Featured Image for DC UPS (Lithium)

    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 …

    Read more

  • OLED nametag

    Saturday, June 03, 2023 in Art

    Featured Image for OLED nametag

    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: …

    Read more

  • Thermal camera macro

    Monday, May 29, 2023 in Tools

    Featured Image for Thermal camera macro

    What is it? 3D-printable adapter, which fits into commercial thermal cameras and adds a 18mm ZnSe CO2 laser lens to the optical path. This greatly improves the imaging quality on small electronics / SMD parts. Before / After Sample photos of PCB …

    Read more

  • LPT printer emulator

    Wednesday, April 26, 2023 in Retrocomputing

    Featured Image for LPT printer emulator

    Warning: While this project does work and has been tested against a number of devices, the firmware is very quick & dirty with hardcoded parameters and missing error handling. Use in production environments is discouraged. What is it? Old …

    Read more

  • PC104 ISA adapter

    Sunday, February 19, 2023 in Retrocomputing

    Featured Image for PC104 ISA adapter

    What is it? These mechanical adapter PCBs allow the use of PC104 and Vortex86DX X-ISA single board computers on an ISA backplane. Such adapters are available commercially for industrial use at extreme prices (100$+), for simple passive adapters. …

    Read more

  • Palm IIIc USB-C

    Monday, February 13, 2023 in USB-C mods

    Featured Image for Palm IIIc USB-C

    What is it? A USB-C sync and charging adapter for the Palm serial dock connector. Hardware Links Hardware: KiCAD design files

    Read more