two-transistor PC interface works

Hi,

Last weekend I built the PC interface with the two transistors.
It's the schematic which is linked from the tk120 page
(http://www.soaring.co.jp/rwstuff/021110.htm).
I can confirm as well that it works great with the VR120.

For the transistors I used a BC547 and BC557 and they
work without any problem. For the normal diodes I used the
1N4148.
It's a very simple and cheap circuit which is easy to build.
I had the components lying around....

I have to say that the tk120 program is great. It's very easy
now to add/modify channels with alpha-tags.
Great program!

/Marc


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