Kuberboef, have a look here on Ebay... they have the exact same module as was used in the DIY cable
Then you can just follow the instructions on the link you gave Chrony PC Interface Cable for USB - Yellow Airgun Forum Archive
The other option is to try and google to find your local electronics store to see if they have the
USB2.0 to RS232 TTL Converter Module PL2303
Hope it helps !!!!!!
Sorry Andy, i don't have the part numbers.
What i did was i printed the diagram with the part numbers on it at this link (Poor Man's Electronic Chronograph - Yellow Airgun Forum Archive ) and asked the guys at Yebo Electronics in Boston Bellville to assist. Don't know that much about specific parts so i decided it would be the easiest to just take it to them seeing as they are the pro's.
Just make sure they mark which parts are which because both the IR LED emitter and phototransistor look exactly the same... don't get them mixed up.
I've built one as well, works perfectly. Used the following parts from "Electronics 123" in Pretoria. Hope it helps: