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3mm White Green LED (Pack of 10) The 3mm White green light-emitting diode (LED) is a semiconductor light source. LED's are used as indicator lamps in many devices and are increasingly used for other lighting. It looks like a white led and illuminate's blue light. When a light-emitting diode is switched on, electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the colour of the light (corresponding to the energy of the photon) is determined by the energy bandgap of the semiconductor.

3mm White LED (Pack of 10) The 3mm White light-emitting diode (LED) is a semiconductor light source. LED's are used as indicator lamps in many devices and are increasingly used for other lighting. It looks like a white led and illuminate's blue light. When a light-emitting diode is switched on, electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the colour of the light (corresponding to the energy of the photon) is determined by the energy bandgap of the semiconductor. Applications: Electronic Projects Decorations Embedded Projects signaling element

White Red Led 3mm(Pack of 10) The 3mm White-red light-emitting diode (LED) is a semiconductor light source. LED's are used as indicator lamps in many devices and are increasingly used for other lighting. It looks like a white led and illuminate's blue light. When a light-emitting diode is switched on, electrons are able to recombine with holes within the device, releasing energy in the form of photons. This effect is called electroluminescence and the colour of the light (corresponding to the energy of the photon) is determined by the energy bandgap of the semiconductor.

3V-9VDC 600RPM N20 Miniature Gear Motor with Metal Gear This Micro Metal Gear Motor has small volume, torsion big, all metal gear, durable, not easy to wear. Great replacement for the rusty or damaged DC geared speed reduce motor on the machine. Widely used on Boat, Car, Electric Bicycle, Fan, Home Appliance. The N20 Micro Gear 3V-9V 600 RPM DC Motor (High Torque) is a lightweight, high torque, and low RPM motor. It is equipped with a gearbox assembly so as to increase the torque of the motor. It has a cross-section of 10 × 12 mm, and the D-shaped gearbox output shaft is 9 mm long and 3 mm in diameter. It has a very small size so as fit in complex spaces of small-scale application. One can connect this Micro Gear Motor to wheels to drive them from one place to another while carrying high loads. This 600RPM N20 Micro Gear Motor (High Torque) has small volume, torsion big, all-metal gear, durable, not easy to wear. Great replacement for the rusty or damaged DC geared speed reduce motor on the machine. Widely used on Boat, Car, Electric Bicycle, Fan, Home Appliance. check out : 43mm Rubber Wheel Tyre for N20 Gear Motor

4 Bit Bi-Stable Latch IC - 74HC75 The 74HC Series 74HC75 is a 4 Bit Bi-Stable Latch 16 Pin IC. It contains 4 transparent D latches with a common enable (gate) on latches 0 and 1 and another common enable on latches 2 and 3. When Q follows D (latch enabled) latch is said to be transparent. Q output will change only on edge of the input trigger pulse. small triangle on the clock (Cp) input of the symbol indicates that the device is positive edge-triggered. D and clock inputs are synchronous inputs. set (SD) and reset (RD) inputs are asynchronous. They operate independently of D and Cp. bubbles on set and reset inputs indicate that they are low active. latches are ideally suited for use as temporary storage for binary information between processing units and input-output or indicator units. Pinout: Pinout Of 74HC75 IC

74LS75

4 Channel (I2C or SPI) 3.3V-5V Bi-Directional Logic Level Converter If you've ever tried to connect a 3.3V device to a 5v system, you know what a challenge it can be. The bi-directional logic level converter is a small device that safely steps down 5v signals to 3.3V and steps up 3.3V to 5v at the same time. This level converter also works with 2.8V and 1.8V devices. What separates this logic level converter from our previous versions is that you can successfully set your high and low voltages and step up and down between them safely on the same channel. Each level converter has the capability of converting 4 pins on the high side to 4 pins on the low side with two inputs and two outputs provided for each side. The level converter is very easy to use. The board needs to be powered from the two voltage sources (high voltage and low voltage) that your system is using. High voltage (5v for example) to the 'hv' pin, low voltage (3.3V for example) to 'lv', and ground from the system to the 'gnd' pin logic level shifter bi-directional with 4 channels between high logic and low logic small module with 1.3Cm x 1.5Cm with 2 rows of 6 pin compatible with a breadboard, can be directly used in breadboard usage: for example, high voltage is 5v, low voltage is 3.3V hv connect with 5v power supply lv connect with 3.3V power supply and connect the power negative pole lvx input/output 3.3V TTL hvx input/output 5v ttl bi-directional transform between lvx and tvx Features: Mutual transform between 5V TTL and 3.3V TTL Four channels of logic and high voltage low voltage logic can two-way transform Portable and light, with 2 rows 6 pin contact pins Level Converter- 4 Channel Compatible with the bread plate, can be used directly put on the breadboard 4 Channel Module (great for I2C or SPI) and will work with all microcontrollers, Arduino, Raspberry Pi, Intel Edison, NXP Mbed Also check 2 Channel Logic Level Converter (I2C, UART, 5V-3.3V) available on the Iotcart website. It is a small device designed to safely step down 5V signals to 3.3V and simultaneously step up 3.3V to 5V. The converter is bi-directional and works with 2.8V and 1.8V devices as well. It has two inputs and two outputs for each side, allowing the conversion of 4 pins on the high side to 4 pins on the low side.

4 Channel 12V Relay Board This 4-channel 12 V relay module is a low pull, high release relay module and features energization status indicator light, release status led is off. By default, this is a 5V relay module and uses jd-vcc for the relay power and is compliant with international safety standards, control, and load areas isolation trenches. The 4 channel relay module can be used to control various appliances and other types of equipment with large currents. The maximum output of the relay module is AC250V 10A and DC5V 10A. The four-channel can be used to switch multiple loads at the same time since there are four relays on the same module. This is useful in creating a central hub from where multiple remote loads can be powered. It is useful for tasks like home automation where the module can be placed in the main switchboard and can be connected to loads in other parts of the house and can be controlled from a central location using a microcontroller. Note: If either of the relays does not turn on: The contacts might be welded due to overcurrent/arcing. Shaking the module firmly might help unstick the contacts The driver circuitry might have been damaged due to overvoltage. Input polarity might be incorrect. Jumper might not have been moved to the correct position Applications Switching mains loads Home automation Battery backup High current load switching read our blog explaining the relay applications , provides comprehensive information about relays, their working principles, construction, and various types.

4 Channel 5V Relay Board This 4 channel 5V relay module is a low-pull, high-release relay module and features an energisation status indicator light; the release status LED is off. By default, this is a 5V relay module that uses JD-VCC for the relay power and is compliant with international safety standards, control and load areas isolation trenches. The 4 Channel Relay Module is a convenient board that can be used to control high voltage, high current loads such as motors, solenoid valves, lamps and AC loads. It is designed to interface with microcontrollers such as Arduino, PIC, etc. The relay terminal (COM, NO and NC) is being brought out with a screw terminal. It also comes with an LED to indicate the status. The 4 channel relay module can be used to control various appliances and other types of equipment with a large current. The maximum output of the relay module is AC250V 10A and DC5V 10A. Applications: Switching mains loads Home automation Battery backup High current load switching Also check the 8 Channel 5V 10A Relay Module . Also, check our relay switch collection.