  We present long-term photometric observations of the young open cluster IC
348 with a baseline time-scale of 2.4 yr. Our study was conducted with several
telescopes from the Young Exoplanet Transit Initiative (YETI) network in the
Bessel $R$ band to find periodic variability of young stars. We identified 87
stars in IC 348 to be periodically variable; 33 of them were unreported before.
Additionally, we detected 61 periodic non-members of which 41 are new
discoveries. Our wide field of view was the key to those numerous newly found
variable stars. The distribution of rotation periods in IC 348 has always been
of special interest. We investigate it further with our newly detected periods
but we cannot find a statistically significant bimodality. We also report the
detection of a close eclipsing binary in IC 348 composed of a low-mass stellar
component ($M \gtrsim 0.09\,\mathrm{M}_{\odot}$) and a K0 pre-main sequence
star ($M \approx 2.7\,\mathrm{M}_{\odot}$). Furthermore, we discovered three
detached binaries among the background stars in our field of view and confirmed
the period of a fourth one.
