New uses for old circuits.......but not as intended

After testing the Pummer circuit in a Solaroller I now know why you don't see them:because it doesn't work.What happens is that the Solaroller moves forwards and backwards with each "pumm",and while this makes for interesting behaviour it won't win you any Solaroller contests.
So,I'm keeping the one,already finished,one but added a LED which doesn't pumm but flashes,making a mobile LED flasher.
The others will be finished with the normal solar-engine circuits.