Barracuda down to 1uS

[ivconic]

[ivconic]

I pushed it even lower, down to 0.8uS, but i can't see any benefits comparing to 1uS sample delay.
Although is not that obvious on video; yet it is noticeable difference in behavior and detection range between 1, 3 and 9uS on that small coil.
Everything bellow 0.8uS is starting to cause problems in behavior.
I see significant noise at RX output, but it is mostly caused by bench power supply and Arduino itself.
For better performances this thing must be done on compact pcb and supplied from battery.
Working in progress...

[eclipse]

Do the same comparisons with different target, small gold piece or lead ball, also perhaps the coil is not suitable for such delays.

[ivconic]

Do the same comparisons with different target, small gold piece or lead ball.

Of course i will. But not now. It is not ready yet.
By now i am mostly focused on supporting code, less on detectors performances.
Detectors performances are not worrying me much at this moment.
I am trying to "make peace" between all three timers on Atmega in course to implement as much as possible functionalities in code.
It is tough to do in C++, much easier in assembler. But i am pushing C++ because it will be easier later to make transferable library for use with other micro controllers.
Pretty ambitious attempt, must admit. But i will try my best.
I picked up Barracuda for testing platform pretty randomly, i had it made lying on a pile already.
It is there just as "proof of concept".

[ivconic]

... also perhaps the coil is not suitable for such delays.

Coil is far from being suitable for any use on PI detector.
It is also randomly picked coil from old scraped floppy drive!
I picked it because it is very small, taking little space on the table, giving me comfort to work on other things.
So it is quite crazy combination... yet giving pretty interesting behavior!