A bit of C code to read out a ELV WS 300 PC [II]/Conrad WS 444 PC weather station (WSWIN (awekas.txt) format). Tested on an Asus WL-500gP WLAN router and OpenWRT Linux:

# opkg install kmod-usb-uhci-iv kmod-usb-serial-ftdi
# /etc/modules.d/65-usb-serial-ftdi or use a ftdi_sio.[k]o including my patch to add USB IDs 1b1f & c006
# /www/cgi-bin/ws300_sio [debug]

	Name	Last modified	Size	Description
	Parent Directory		-
	etc/	2012-12-29 21:36	-
	format.txt	2010-02-27 00:53	1.3K
	Makefile	2012-03-05 14:50	369
	mipsel/	2012-12-29 17:48	-
	ws300_sio.c	2012-12-29 17:48	3.5K
	_MG_0662.JPG	2010-03-01 20:28	573K
	HEADER.html	2020-10-28 08:19	1.3K	ws300_sio