Eight-function multi-pattern lantern chain circuit using SE9201

It uses SE9201 multi-format integrated circuit. The operating voltage of SE 9201 is 3~8V,
with a typical value of 5V. It has eight programs: four-point chasing, elastic expansion and contraction, vaulting right-hand rotation, vaulting left-hand rotation, on and off at the same time, on and
off at the same time, left and right expansion, full light and interval flash. Different connection methods are
implemented through the pattern selection terminals B] to B4.
    In Figure 2-152, the potentiometer RP and the capacitor C2 determine the clock frequency of the internal oscillator of the integrated circuit. Adjust RP, variable
flash speed.