4 pieces 7 X 2 Cm Gear Motor Robot Wheel & 4 pieces 200 RPM Gear Motor These are 200RPM geared motor and 7 x 2 cm wheel ( 4 sets). The geared motors are simple DC Motors featuring gears for the shaft for obtaining the optimal performance characteristics. They are known as Center Shaft DC Geared Motors because their shaft extends through the center of their gearbox assembly. These standard size DC gear Motors are very easy to use. Also, you don’t have to spend a lot of money to control motors with an Arduino or compatible board . TheL298N H-bridge module with onboard voltage regulator motor driver can be used with this motor that has a voltage of between 5 and 35V DC. This DC Motor of 12V 200 RPM can be used in all-terrain robots and a variety of robotic applications. These motors have a 3 mm threaded drill hole in the middle of the shaft thus making it simple to connect it to the wheels or any other mechanical assembly. Nut and threads on the shaft to easily connect and internally threaded shaft for easily connecting it to the wheels. These DC Geared motors with robust metal/Plastic gearbox for heavy-duty applications, and ideally suited for robotics and industrial applications. The 7 x 2 cm wheels are high quality wheels, they are easy to mount and durable.

4 pieces 7 X 4 Cm Gear Motor Robot Wheel & 4 pieces 200 RPM Gear Motor for Robotics Science Project These are 200RPM geared motor and 7 x 4 cm wheel ( 4 sets). The geared motors are simple DC Motors featuring gears for the shaft for obtaining the optimal performance characteristics. They are known as Center Shaft DC Geared Motors because their shaft extends through the center of their gearbox assembly. These standard size DC gear Motors are very easy to use. Also, you don’t have to spend a lot of money to control motors with an Arduino or compatible board . TheL298N H-bridge module with onboard voltage regulator motor driver can be used with this motor that has a voltage of between 5 and 35V DC. This DC Motor of 12V 200 RPM can be used in all-terrain robots and a variety of robotic applications. These motors have a 3 mm threaded drill hole in the middle of the shaft thus making it simple to connect it to the wheels or any other mechanical assembly. Nut and threads on the shaft to easily connect and internally threaded shaft for easily connecting it to the wheels. These DC Geared motors with robust metal/Plastic gearbox for heavy-duty applications, and ideally suited for robotics and industrial applications. The 7 x 4 cm wheels are high quality wheels, they are easy to mount and durable.

4 Pin Push Button Tactile Switch 12x12x15mm (Pack of 5) The 4 Pin Push Button Tactile Switch (12x12x15mm) is a dependable component designed for precise input control in electronic circuits. Its tall 15mm profile ensures comfortable actuation, while the tactile switch 4 pin configuration provides firm electrical and mechanical stability. Ideal for control panels, embedded systems, and industrial electronics, this push button switch offers consistent tactile feedback even in high-frequency switching applications. Its through-hole mounting design ensures durability and reliable performance, making it a must-have for hobbyists and professionals alike. Features: Extended Height: 15mm actuator for easy access and firm tactile feedback. Standard 4-pin design. Compatible with typical PCB layouts. THT Mounting Through-hole legs for a stronger and more durable board attachment. Voltage Rating: 12V DC (standard) Current Handling Suitable for 50 mA to 100 mA low-current circuits. Applications: OEM product development Industrial control panels Prototyping and testing equipment Consumer electronics having enlarged switch housings

4 Pin Push in Conductor The 4 Pin lever nuts connector is designed with a rated voltage of 400V and an impulse voltage of 4KV. The 4 pin lever nuts compact connector is manufactured with a modified nylon (PA66) and phosphor copper is used as a contact material.

4 Pin Tactile Push Button Switch 12X12X21mm (Pack of 5) The 12x12x21mm tactile switch 4 pin is a high-quality tactile push button switch designed for precision and reliability in various control systems. Its extended stem enhances accessibility, making it suitable for recessed panels or enclosed assemblies. Featuring a 4-pin through-hole design and momentary tactile actuation, this switch provides consistent feedback and dependable operation. Commonly used in OEM assemblies, automation setups, and test rigs, it’s an excellent choice for engineers and hobbyists building custom industrial or electronic projects. Features: 21mm actuator height allows for easy operation in deep or enclosed installations. Standard 12x12mm base. Compatible with standard PCB and control panel configurations. 4-Pin THT Design Offers Solid Solder Joints for Mechanical Stability Momentary Tactile Feedback Ideal for push applications with a short response time. Voltage and Current Rating Operates @ 12V DC, up to 100mA Applications: OEM appliance controls. Testing and calibration equipment Audio and visual hardware interfaces Control consoles and automation panels Prototyping and embedded system development.

4 Way Slide Switch 2.54mm Pitch (Pack of 2) 4 Way DIP switches for reliable operation by secure snap-in.  DIP Switch Used on a printed circuit board along with other electronic components and is commonly used to customize the behavior of an electronic device for specific situations. Widely used in data processing, communication, remote control and anti-theft alarm system need to manually automatic programming products. 4 position or 4 in 1, Dual In-Line Package (DIP) SPDT slide switch, namely the more traditional toggle switch is a set of electrical switches which is packed in a small box or housing. This DIP single pole double throw (SPDT) switch forces the operator to choose between connecting to either one of two terminals as such the switch will remain connected to one or the other, and the two terminals will never be connected. This switch is designed to be easily mounted on printed circuit boards to provide various ranges of input to the electronic device. You can easily control the input by using the DIP switch. Applications: Widely used in circuit boards, breadboards and All PCB Projects, Perfect as a toggle or on off switch for your projects.

4-bit Bi-directional Shift Register IC - 74HC194 The 74HC Series 74HC194 bidirectional shift register is designed to incorporate virtually all of the features a system designer may want in a shift register; they feature parallel inputs, parallel outputs, right-shift, and left-shift serial inputs, operating-mode-control inputs, and a direct overriding clear line. The register has four distinct modes of operation, namely: Parallel (broadside) load Shift right (in the direction QA toward QD) Shift left (in the direction QD toward QA) Inhibit clock (do nothing) Synchronous parallel loading is accomplished by applying the four bits of data and taking both mode control inputs, S0 and S1, HIGH. The data is loaded into the associated flip-flops and appears at the outputs after the positive transition of the clock input. During loading, serial data flow is inhibited. Shift right is accomplished synchronously with the rising edge of the clock pulse when S0 is HIGH and S1 is LOW. Serial data for this mode is entered at the shift-right data input. When S0 is LOW and S1 is HIGH, data shifts left synchronously and new data is entered at the shift-left serial input. Clocking of the flip-flop is inhibited when both mode control inputs are LOW. check out : 4-Line to 16-Line Decoder/Demultiplexer IC - 74HC154 Pinout: Pinout Of 74HC194 IC

4-Bit Binary Ripple Counter IC - 74HC93 The 74HC93 are high-speed Si-gate CMOS devices and are pin-compatible with low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC Series 74HC93 are 4-bit binary ripple counters. The devices consist of four master-slave flip-flops internally connected to provide a divide-by-two section and a divide-by-eight section. Each section has a separate clock input (CP0 and CP1) to initiate state changes of the counter on the HIGH-to-LOW clock transition. State changes in the Qn outputs do not occur simultaneously because of internal ripple delays. Therefore, decoded output signals are subject to decoding spikes and should not be used for clocks or strobes. check out : 4 Bit Bi-Stable Latch IC - 74HC75 A gated AND asynchronous master reset (MR1 and MR2) is provided which overrides both clocks and resets (clears) all flip-flops. Since the output from the divide-by-two section is not internally connected to the succeeding stages, the device may be operated in various counting modes. In a 4-bit ripple counter, the output Q0 must be connected externally to input CP1. The input count pulses are applied to clock input CP0. Simultaneous frequency divisions of 2, 4, 8, and 16 are performed at the Q0, Q1, Q2, and Q3 outputs as shown in the function table. As a 3-bit ripple counter, the input count pulses are applied to input CP1. Simultaneous frequency divisions of 2, 4, and 8 are available at the Q1, Q2, and Q3 outputs. Independent use of the first flip-flop is available if the reset function coincides with the reset of the 3-bit ripple-through counter. check out : 16-Channel Analog Multiplexer/Demultiplexer IC - CD4067 Pinout: Pinout Of 74HC93 IC

4-bit D-type Registers with 3-State Output IC - 74HC173 The 74HC Series 74HC173 is a 4-bit register that includes D-type flip-flops featuring totem-pole 3-state outputs capable of driving highly capacitive or relatively low-impedance loads. The high-impedance third state and increased high-logic-level drive provide these flip-flops with the capability of being connected directly to and driving the bus lines in a bus-organized system without the need for interface or pull-up components. Up to 128 of the 74LS173 outputs can be connected to a common bus and still drive two Series 74LS TTL normalized loads, respectively. To minimize the possibility that two outputs will attempt to take a common bus to opposite logic levels, the output control circuitry is designed so that the average output disable times are shorter than the average output enable times. Gated enable inputs are provided on these devices for controlling the entry of data into the flip-flops. When both data-enable (G1, G2) inputs are low, data at the D inputs are loaded into their respective flip-flops on the next positive transition of the buffered clock input. Gate output-control (M, N) inputs also are provided. When both are low, the normal logic states (high or low levels) of the four outputs are available for driving the loads or bus lines. The outputs are disabled independently from the level of the clock by a high logic level at either output-control input. The outputs then present a high impedance and neither load nor drive the bus line. Detailed operation is given in the function table. The 74LS173 is characterized for operation from 0°C to 70°C. Pinout: Pinout of 74HC173 IC

4-bit Magnitude Comparator IC - 74HC85 The 74HC Series 74HC85 are high-speed Si-gate CMOS devices and are pin-compatible with low-power Schottky TTL (LSTTL). They are specified in compliance with JEDEC standard no. 7A. The 74HC85 IC are 4-bit magnitude comparators that can be expanded to almost any length. They perform the comparison of two 4-bit binary, BCD, or other monotonic codes and present the three possible magnitude results at the outputs (QA>B, QA=B and QAB, IA=B and IAB = = LOW and IA=B = HIGH. For words greater than 4-bits, units can be cascaded by connecting outputs QA? and QA=B to the corresponding inputs of the significant comparator. Pinout: Pinout of 74HC85 IC