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220 ohm 1/2W Resistor
RM0.10a resistor is a passive two-terminal electrical component that implements electrical resistance as a circuit element. In electronic circuits, resistors are used to reduce current flow, adjust signal levels, divide voltages, bias active elements, and terminate transmission lines, among other uses.
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Sg90 Tower Pro Mini Servo Motor Compatible with Arduino
RM9.00DescriptionNote: If you are using a microcontroller based on Raspberry Pi, micro:bit, REKA:BIT (ZOOM:BIT), and ESP WiFi series, we recommend using TS90A micro servo which supports 3.3 DC Voltage.
This is a low-cost plastic gear RC servo with 1.80kg.cm holding torque (at 4.8V). It is a perfect solution for student robotic projects who build arms or linkages. The advantage of the RC servo over the DC brush motor is the ability to control its rotation angle.If you are building a system or project that uses many RC servo motors, please consider getting the 8 Channels Servo Controller. They will make your life easier. -
HC-SR04 Ultrasonic Distance Range Finder Sensor for Arduino
RM5.00DescriptionIf you’ve been searching for distance measurement and object detection sensors at a rock-bottom price, look no further! This legendary HC-SR04 ultrasonic sensor is your perfect choice. It offers excellent range accuracy and fairly stable readings at a very low cost. It requires two digital I/O pins (an output pin and an input pin) to interface with it.
An ultrasonic sensor is created based on the principle of echolocation used by animals like bats and dolphins. Since the ultrasonic sensor uses sonar to determine the distance to an object, its operation is not affected by sunlight, spotlight, and object’s surface color which will affect the readings of any infrared distance sensors. However acoustically soft materials such as clothes can be difficult to detect.
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