I checked and the value of lfuse was 62 (with division of the clock by 8).
So I changed the value to E2, it works faster, but the disadvantage is that the signal on the scope is totally unstable.
Maybe the reason provide by the beadboard is not good for the hight speed circuits ?
It is better to solder the components on a real IC.
My error will be verified that the installation works ! (slowly, but with stability :-)
Thank-you for this good and funny job !
