Texas Instruments NE555 Precision Timers IC (SMD Package)The NE555 Precision Timer ICs are precision timing circuits capable of producing accurate time delays or oscillation. In the time delay or mono stable mode of operation, the timed interval is controlled by a single external resistor and capacitor network. In the a stable mode of operation, the frequency and duty cycle can be controlled independently with two external resistors and a single external capacitor. Datasheet Features Timing from

These are Carbon Film Resistor with a value of 820k ohm 1/2W and tolerance of ±5%

H) 28 x 13 x 25 mm

Power Supply Circuits

each of which is controlled very precisely by the MAX7219 driver to produce the desired pattern

It's a L293d motor driver module

TO-247-3 Max

Model UCC3818 Brand Texas Instruments

These are Metal Film Resistor with a value of 330 ohm 2W and tolerance of ±5%

Idle Current 10-13mA Peak Current  <30mA Input Voltage 3

4 Ohm Glass envelope color Green No

and stepping motors) and switching power transistors

Sensitivity Adjustable: It can be adjusted according to using location