Простая полицейская мигалка на двух NE555 || Police flasher on two NE555 || Simple circuit

In video you can see the schematic diagram of a simple LED police flasher with two popular 555 integrated circuits. Both 555s work as astable flip-flop, each with a different frequency. Their outputs are connected to antiparallel two groups of LEDs. The circuit produces alternating series of strobes of LEDs of each group. The frequency and nature of flashing can be adjusted by changing the values ​​of C2, C3, R2 and R3. R3 and C3 affect the flash rate, R2 and C2 affect the frequency of switching colors. You