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  • ACP IT Solutions AG
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feiglein74/README.md

Hi, I'm Sascha 👋

IT infrastructure by day — Windows, networks, PowerShell. Off the clock I revive old lab and test equipment: dump the firmware, decode the protocol, write it all down. Most of my docs are in German; code and commands speak for themselves.

🔧 Vintage test equipment — repair & reverse engineering

Project What
pps-25-2 Roth PPS 25/2 lab PSU (1991): firmware dump, full RS-232 command set, ESD repair
ngpv-40-5 Rohde & Schwarz NGPV 40/5 (blank panel): repair, calibration, GPIB control on Linux
xantrex-xt-20-3 Xantrex XT 20-3 via M9B GPIB board — the addressing quirk nobody documents
bender-unimet-1000st Bender UNIMET 1000 ST medical safety tester: BIOS, I²C relay matrix, RS-485 bus
bender-model-601 Bender µP601 safety tester: documenting a working unit before opening it
novotec-rs232-adapter Circuit analysis of an opto-isolated NOVOTEC RS-232 interface card
BK1788-Python · janitza · BK9000-Steuerung Python control for a BK Precision PSU, Janitza power meter (Modbus RTU), Beckhoff BK9000 (Modbus TCP)
mpower · Rack-Fancontrol Cloud-free control for Ubiquiti mFi mPower · ESP32 PID fan controller for a mini rack

🌐 Network tools (Go)

Project What
netflow-collector NetFlow v5/v9/IPFIX collector with interactive TUI and Wireshark-style filters
netspy Network discovery & live monitoring: ARP/ICMP, mDNS/NetBIOS/LLMNR, device detection
dns-watcher + dns-sqlite-viewer Real-time DNS monitoring on Windows via ETW (C#) + TUI viewer for the recorded data

🪟 Windows & PowerShell

Project What
FTA-Manager Set Windows file type & protocol associations from scripts — incl. UCPD-protected ones
Fix-PSModulePath Get PowerShell modules out of OneDrive-synced folders
winget-wrapper winget upgrade --all with a blacklist and an interactive TUI
Update-Sysinternals Keep a local Sysinternals folder up to date
Windows_AV-ExclusionCheck · Teams-Owner Audit AV exclusions (Defender/Sophos/ESET) · list Teams a user owns

Pinned Loading

  1. FTA-Manager FTA-Manager Public

    PowerShell module to set Windows file type and protocol associations (UserChoice hash) — incl. UCPD-protected .pdf/http/https

    PowerShell 3 1

  2. bender-unimet-1000st bender-unimet-1000st Public

    Bender UNIMET 1000 ST medical safety tester (1995) — teardown & reverse engineering: BIOS dump, F8680, I²C relay matrix, RS-485 bus

    HTML

  3. dns-sqlite-viewer dns-sqlite-viewer Public

    Interactive TUI viewer for dns-watcher SQLite databases — live follow mode, filter expressions, multi-server aggregation

    Go

  4. dns-watcher dns-watcher Public

    Real-time DNS query monitoring for Windows DNS servers and clients via ETW (Event Tracing for Windows)

    C#

  5. ngpv-40-5 ngpv-40-5 Public

    Rohde & Schwarz NGPV 40/5 lab PSU (blank panel) — repair log, calibration procedure and GPIB control on Linux via Keysight 82357B

    Python

  6. pps-25-2 pps-25-2 Public

    Roth PPS 25/2 lab power supply (1991) — firmware dump, full RS-232 command set, ESD damage diagnosis and repair

    Python