Ch341par.exe

First set all control pins high (inactive except INIT which is active high):

For serious projects, consider using the (also from WCH) which gives faster, programmatic access without shelling out to an EXE. ch341par.exe

bcdedit /set testsigning on Then install driver. Reboot. | Tool | Description | |------|-------------| | io.dll + Python | Use pyParallel or pyWin32 with CH341 DLL | | CH341DLL | Programmatic access via C/C++/C# | | GiveIO / UserPort | For legacy LPT ports (not USB) | | libusb + libch341 | Cross-platform (Linux/macOS) | First set all control pins high (inactive except