If we building CDI's and TCI's, we need also a good strobe to see wat we are doing.
http://www.electronics.gompy.net/strobe/
The designe it's mine, I only redesigne the pcb and use normal components.

Is this sensitive enough to pick up the spark through a shielded spark lead like used in most model spark ignitions?

yes, it pickup even the spark of a electric lighter.

Hello, this scope is a good idea. Is a kit or at least the PCB available for purchase from you or someone? Thank you very much.

Sincerely,

Richard

It will cost more then $5 if I make the pcb and send it to you from the Netherlands.
With this program http://www.baas.nl/layo1pcb/uk/downloads.htm and the files from my website you can make the pcb by yourself.
Other option, find somenone into the states who can / will make the pcb.

made up one of your strobe units and it works fine...thanks

By the way, how do you add a photo here..??

Select "reply" at the top of the posting. Then, at the bottom of the reply message in a set of boxes starting with "File" are two choices for sending images. Select one and follow the prompts.

By the way, have you made a PC board, and will you sell them? Please advise.

Good luck.

Regards,

Richard

OK...thanks for that. I will give it a try.
Yes, made my own pc board but do not get enough free time to make extras sorry.

Will this work even if the spark plug wire has a wire braided shield??

Thanks,
AV8TOR

Yes, maybe it's even to sensitive.

Changes R3 into 1k and R4 to 15M.
Don't use a coil but a simple crocodilclamp.

Rob, Is this circuit still up on the site somewhere?

I can probably make some boards for the stroboscope. Whenever I make a board, I always print out more positives than I need for my projects. How many should I make and for who?

John

John, I'd take one.

Greg

If anyone wants one, PM me with your address.

John