I’ve made variation of Logic Shrimp, using only through-hope components found in my junk box.
More details and pictures can be found here.
There is no schematics drawn, I built it just using datasheets and original schematics – and I’m too lazy to draw it once it is working.
Device is really great, I got it working flawlessly in two or three hours. OSL software is quite good. Cost of all components was under 10EUR.
Via the forum.