KY-039 Finger Heartbeat Detection Sensor The KY-039 Finger Heartbeat Detection Sensor is a sensor that can detect a person's pulse or heartbeat. It is a small, portable sensor that easily connects to an Arduino or other microcontroller to read and analyse heart rate. The sensor is made up of a finger clip that attaches to the finger and an infrared sensor that detects blood flow through the finger. The sensor sends information to the microcontroller, which computes the heart rate. The sensor generates an analogue output signal that the microcontroller can read. The LED is on the light side of the finger, and the phototransistor is on the other side of the finger, the phototransistor is used to obtain the flux emitted when the blood pressure pulse by the finger when the resistance of the phototransistor will be slightly changed. We chose a very high resistance resistor R1 because most of the light through the finger is absorbed, it is a desirable phototransistor sensitive enough. The most important is to keep the shield stray light into the phototransistor. For home lighting that is particularly important because the lights at home are mostly based on 50HZ or 60HZ fluctuating, so a faint heartbeat will add considerable noise. Applications: DIY Heart Rate Sensor Heart Rate Monitor Using IoT MAX 30102 Heart Rate Monitor on 16x2 LCD

KY033 TCRT5000 Sensor The TCRT5000 Single Channel Line Tracking Sensor Module is a great detector for a line-following robot . Potentiometer to adjust the sensitivity of the individual sensors. TCRT5000 infrared sensor emits infrared emitting diode continuously when no infrared rays emitted or reflected back is reflected back but the strength is not large enough, the phototransistor has been in the off state, and the output terminal of the module is high, indicating that the diode has been in the off state; in the object to be detected within the detection range, and the intensity of the reflected infrared rays is large enough, phototransistor saturated, and the output terminal of the module is low, the indicator LED is lit. TCRT5000 Single Channel Line Tracking Sensor Module is a carrier board for the TCRT5000 reflective optical sensor. Although it is designed for use with line-following robots, it can be used in mini-sumo robots for line control. The board has a digital output. Applications: Position sensor for shaft encoder Detection of reflective material such as paper, IBM cards, magnetic tapes etc. Limit switch for mechanical motions in VCR General purpose - wherever the space is limited

L Clamp For Mounting Geared Motor L-clamp for Mounting Geared Motor is a high-quality, easy to install motor clamp that offers reliable and lasting performance. This versatile motor clamp is designed specifically for mounting geared motors securely on boards or other surfaces providing superior holding capability with minimal effort. Its rustproof zinc alloy construction ensures long life while its tight seal prevents any leakage of oil during operation due to temperature fluctuations in the environment. The product has been tested extensively against tough environmental conditions such as extreme weather changes and vibration shocks from machinery operations ensuring the highest levels of efficiency at all times. This motor clamp is ideal for engineers who need accuracy when installing gears into their projects regularly without prior experience in electronics engineering, this motor mount will make your job easier than ever preventing fatigue while performing complex tasks quickly and accurately every single time, delivering exceptional value right away! check out : BO MOTOR CLAMP (PACK OF 5) Features: Suitable for Center Shaft Gear Motor Easy installation for convenient motor mounting Sturdy and durable construction for stability Rustproof zinc alloy ensures long life Designed for robotics enthusiasts and mechanical projects Compatible Motors 200 RPM GEARED MOTOR 300 RPM GEARED MOTOR 10 RPM GEARED MOTOR 60 RPM GEARED MOTOR Applications: Ideal for securely mounting geared motors on boards or surfaces Provides superior holding capability for geared motors Suitable for use in robotics projects

L293D 4 Channel DC Motor Driver Motor Drive Board L293D Module For Arduino UNO MEGA 2560 is a Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC, and stepper motors ) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage, and internal clamp diodes are included. This device is suitable for use in switching applications at frequencies up to 5 kHz. It is a medium-power motor driver perfect for driving DC Motors and Stepper Motors. It uses the popular L293 motor driver IC. It can drive 4 DC motors on and off, or drive 2 DC motors with directional and speed control. L293D DC Motor Driver Module is fully compatible with Arduino and Raspberry Pi cards. Allows you to control 2 DC motors in 2 directions at the same time. L293D DC Motor Driver has become easy to use by being turned into a module. You can integrate them into your circuits very quickly by making the necessary connections to the output and input pins. check out : L9110S H Bridge Stepper Motor Dual DC Driver Controller Module For Arduino Applications: Can be used to control motors of DIY Robot Can be used to control motor speed and direction Also, read our blog What is Motor Driver detailing an overview of motor drivers, including the different types available and how they work.

L293D Motor Driver Board The L293D Motor Driver Module is a medium-power motor driver that is ideal for driving DC and stepper motors . It employs the well-known L293 motor driver IC. The l293d motor driver board can turn on and off four DC motors or control two DC motors with directional and speed control. The driver greatly simplifies and improves the ease with which microcontrollers can control motors, relays, and other devices. It has a total DC current of up to 600mA and can drive motors up to 12V. To double the maximum current, connect the two channels in parallel, or in series to double the maximum input voltage. This motor driver is ideal for robotics and mechatronics projects that require controlling motors from microcontrollers, switches, relays, and other devices. Ideal for driving DC and Stepper motors in micro-mouse, line-following robots, robot arms, and other applications. If you want to control the motor with this motor driver, for that you will need a few essential components like Arduino jumper wires batteries or power supply Features: Pin compatible with L293D Wide supply voltage: 4.5 V to 12 V. Max supply current: 600 mA per motor. The driver has two holes of 3 mm dia. Male burg-stick connectors for supply, ground, and input connection. Screw terminal connectors for easy motor connection. High noise immunity inputs. Internal ESD Protection. Thermal Shutdown check out : Dual Monster Moto Shield VNH3ASP30 DC Motor Drive

L293D Motor Driver IC L293D IC generally comes as a standard 16-pin DIP (dual-in-line package). This motor driver IC can simultaneously control two small motors in either direction; forward and reverse with just 4 microcontroller pins (if you do not use enable pins). Each chip contains two full H-bridges (four half H-bridges). That means you can drive four solenoids, two DC motors bi-directionally, or one stepper motor. A motor driver is basically a current amplifier that takes a low-current signal from the microcontroller and gives out a proportionally higher current signal which can control and drive a motor. In most cases, a transistor can act as a switch and perform this task which drives the motor in a single direction. Turning a motor ON and OFF requires only one switch to control a single motor in a single direction. L293D IC generally comes as a standard 16-pin DIP (dual-in-line package). This motor driver IC can simultaneously control two small motors in either direction; forward and reverse with just 4 microcontroller pins (if you do not use enable pins). Each chip contains two full H-bridges (four half H-bridges). That means you can drive four solenoids, two DC motors bi-directionally, or one stepper motor. Pinout: Pinout of  L293D Motor Driver IC Applications: High Current Motor Driver IC. Dual H-bridge for controlling up to two motors at a time. Ideal for Inductive load decoupling from the main/control unit. A wide voltage range allows for an adaptive voltage range control.

L293D Motor Driver IC (2 Pcs) L293D PowerDIP-16 Stepper Motor Controller/ Driver is a dual H-bridge motor driver integrated circuit (IC). Motor drivers act as current amplifiers since they take a low-current control signal and provide a higher-current signal. This higher current signal is used to drive the motors. The Device is a monolithic integrated high voltage, high current four channel driver designed to accept standard DTL or TTL logic levels and drive inductive loads (such as relays solenoids, DC and stepping motors) and switching power transistors. To simplify use as two bridges each pair of channels is equipped with an enable input. A separate supply input is provided for the logic, allowing operation at a lower voltage and internal clamp diodes are included. It is suitable for use in switching applications at frequencies up to 5 kHz. The L293D is assembled in a 16 lead plastic package which has 4 centre pins connected together and used for heatsinking The L293DD is assembled in a 20 lead surface mount which has 8 centre pins connected together and used for heatsinking. L293D contains two inbuilt H-bridge driver circuits. In its common mode of operation, two DC motors can be driven simultaneously, both in forward and reverse direction. The motor operations of two motors can be controlled by input logic at pins 2 & 7 and 10 & 15. Input logic 00 or 11 will stop the corresponding motor. Logic 01 and 10 will rotate it in clockwise and anticlockwise directions, respectively. Enable pins 1 and 9 (corresponding to the two motors) must be high for motors to start operating. When an enable input is high, the associated driver gets enabled. As a result, the outputs become active and work in phase with their inputs. Similarly, when the enable input is low, that driver is disabled, and their outputs are off and in the high-impedance state. They are designed to drive inductive loads such as relays, solenoids, dc and bipolar stepping motors, as well as their high-current/high-voltage loads in positive-supply applications. If you want to control the dc motor with these motor driver ICs, for that you will need few essential components like Arduino , breadboard , jumper wires , batteries or power supply . Note: Image may vary from actual product in terms of Manufacturer/Brand name according to the availability. Pinout: Pinout Of L293D Motor Driver IC Features: Separate Input-Logic Supply Internal ESD Protection Thermal Shutdown High-Noise-Immunity Inputs Applications: High Current Motor Driver IC. Dual H-bridge for controlling up to two motors at a time. Ideal for Inductive load decoupling from the main/control unit. Wide voltage range allows for an adaptive voltage range control.

L293D Motor Driver IC Module Board The L293D Motor Driver IC Module Board is a simple and useful tool for controlling motors in projects like robots and other machines. It uses the L293D IC, which can control two DC motors or stepper motors at the same time. You can control the direction of each motor separately or turn up to four motors on and off. This module works with motor voltages from 5V to 36V and can handle a current of up to 600mA. It is easy to connect with devices like Arduino, Raspberry Pi, or 555 Timer circuits, making it great for beginners and experts. This motor driver is a reliable choice for building a robot arm, a line-following robot, or a remote-controlled car.

L298N Motor Driver IC The L298 Motor Driver IC is an integrated monolithic circuit in a 15-lead Multiwatt and PowerSO20 packages. It is a high voltage, a high current dual full-bridge driver designed to accept standard TTL logic levels and drive inductive loads such as relays, solenoids, DC and stepping motors. Two enable inputs are provided to enable or disable the device independently of the input signals. The emitters of the lower transistors of each bridge are connected together and the corresponding external terminal can be used for the connection of an external sensing resistor. An additional supply input is provided so that the logic works at a lower voltage. The sense output voltage can be used to control the current amplitude by chopping the inputs or to provide over-current protection by switching low the enabled input. The brake function (Fast motor stop) requires that the Absolute Maximum Rating of 2 Amps must never be overcome. When the repetitive peak current needed from the load is higher than 2 Amps, a paralleled configuration can be chosen. An external bridge of diodes are required when inductive loads are driven and when the inputs of the IC are chopped; Schottky diodes would be preferred. POWER OUTPUT STAGE The L298 integrates two power output stages (A; B). The power output stage is a bridge configuration and its outputs can drive an inductive load in common or differential mode, depending on the state of the inputs. The current that flows through the load comes out from the bridge at the sensor output, an external resistor (RSA; RSB.) allows detection of the intensity of this current. INPUT STAGE Each bridge is driven by means of four gates the input of which are In1; In2; EnA and In3; In4; EnB. The In inputs set the bridge state when The En input is high; a low state of the En input inhibits the bridge. All the inputs are TTL compatible. Pinout: Pinout of L298N Motor Driver IC

L80 GPS Shield The shield features new generation GlobalTop GPS chipset and SIM800 Quad-band GSM/GPRS engine that works on 850/ 900/ 1800/ 1900 MHz. With GPS technology the shield supports satellite navigation along with cellular connectivity and that makes most of what you need for your robotics projects. GSM/GPRS connectivity is controlled via AT commands, while the GPS functionality follows NMEA protocol. The shield also offers data storage on microSD card. The design of this shield allows you to drive the GSM module directly with the computer as well as with your Arduino Board. The package includes duck type SMA antenna for cellular network connectivity and an active external antenna for GPS functionality. GPS U2P module offers a high sensitivity, incredibly low power consumption while searching with -165dBm high sensitivity and 10Hz maximum update rate. Featuring an industry-standard interface and GPS function, the combination of both technologies on a single shield allows items, vehicles and people to be tracked seamlessly at any location and anytime with signal coverage. The shield design is compatible with the older Arduino footprint as well as the new R3 footprint, which means that this shield is totally compatible with most of the Arduino Boards. That includes most popular Uno to the veteran Duemilanove. It also supports 3V3 boards such as Arduino Due, with onboard level shifting buffer gates. The shield can also used with Arduino Mega and Leonardo but the serial communication feature via software pins wont be available for these two boards, still that wont affect the functionality of the GSM module as it can be communicated over the hardware serial pins. Tracking shield uses separate modules for cellular connectivity and location tracking, thereby the shield guarantees reliable GPS data and cellular connectivity simultaneously. These shields are manufactured with Automatic Pick and Place Machine for high quality standard. The shield itself is high quality PTH PCB with professionally designed circuitry. The onboard low dropout 3A power supply allows you to connect wide range unregulated power supply (7V-12V), also withstands the peak current draw that occurs during network scanning. The onboard level shifting circuitry is designed using buffer gates for added reliability. We have also considered optional customization as per users convenience, for which the design includes onboard PCB jumpers.