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Raspberry Pi 4 Model B is the latest product in the popular Raspberry Pi range of computers. It offers ground-breaking increases in processor speed, multimedia performance, memory, and connectivity compared to the prior-generation Raspberry Pi 3 Model B+ while retaining backward compatibility and similar power consumption. For the end-user, Raspberry Pi 4 Model B provides desktop performance comparable to entry-level x86 PC systems.
This module offers a wireless data transmission and reception range of approximately 1 km in the open air. It’s a low power radio chip that is ultra-easy to use. This module has an onboard STM8S003F3P6 MCU which is communicating with the SI4463 so that the user can communicate with the module using a simple TTL two-wire serial interface (RX, TX, GND).
The MPU-6050 3 Axis Acceleration + Gyro Breakout (MPU-6050) is a great motion processing module. By combining a MEMS 3-axis gyroscope and a 3-axis accelerometer on the same silicon die together with an onboard Digital Motion Processor™ (DMP™) capable of processing complex 9-axis MotionFusion algorithms, the MPU-6050 does away with the cross-axis alignment problems that can creep up on discrete parts.
IR Infrared Obstacle Avoidance Sensor has a pair of infrared transmitting and receiving tubes. When the transmitted light waves are reflected back, the reflected IR waves will be received by the receiver tube. The onboard comparator circuitry does the processing and the green indicator LED comes to life. The module features a 3 wire interface with Vcc, GND and an OUTPUT pin on its tail. It works fine with 3v3 to 5V levels. Upon hindrance/reflectance, the output pin gives out a digital signal (a low-level signal). The onboard preset helps to fine-tune the range of operation, effective distance range is 2cm to 80cm.
The HC-SR04 is a popular ultrasonic sensor used for distance measurement. It utilizes ultrasonic waves to detect the distance to an object, making it ideal for various applications such as robotics, obstacle avoidance, level measurement, and proximity detection. This sensor provides accurate distance measurements and is easy to interface with microcontrollers.
Good quality, dual-in-line narrow sockets with black thermoplastic bodies and tin-plated copper alloy contacts. The Socket helps not to sold the ic directly on the PC board or vero board. has Good quality, dual-in-line narrow sockets with black thermoplastic bodies and tin-plated copper alloy contacts.
The LM2596 LM2596S DC-DC Step-Down Power Supply Module is a highly efficient buck converter designed to reduce higher input voltages to a lower, stable output voltage. This module is based on the popular LM2596 or LM2596S integrated circuit and is known for its reliability, simplicity, and high efficiency. It’s ideal for powering various electronic devices, DIY projects, and embedded systems. This specific version of the module does not include an SMD LED, making it a straightforward, no-frills solution for voltage regulation.
The 5V Active Buzzer with Oscillating Source is a compact and easy-to-use audio signaling device. Unlike passive buzzers, this active buzzer has an internal oscillating source, allowing it to produce sound when a 5V DC power supply is applied. This makes it ideal for a wide range of applications, including alarms, timers, confirmation signals, and electronic projects requiring audible feedback.
The Soil Moisture Sensor Module is an essential tool for monitoring soil moisture levels in gardening and agricultural applications. This sensor helps in determining the moisture content of the soil, allowing for automated irrigation systems or manual watering adjustments to maintain optimal plant health.
12V Solenoid lock has a slug with a slanted cut and a good mounting bracket. It’s basically an electronic lock, designed for a basic cabinet, safe or door. When 9-12VDC is applied, the slug pulls in so it doesn’t stick out and the door can be opened. It does not use any power in this state. It is very easy to install for automatic door lock systems like electric door lock with the mounting board. This solenoid, in particular, is nice and strong.
This Flame Sensor can be used to detect fire sources or other light sources of the wavelength in the range of 760nm – 1100 nm. It is based on the YG1006 sensor which is a high speed and high sensitive NPN silicon phototransistor. Due to its black epoxy, the sensor is sensitive to infrared radiation. The sensor can be a great addition in a fire fighting robot, it can be used as a robot’s eyes to find the fire source. When the sensor detects flame the Signal LED will light up and the D0 pin goes LOW.
The pulse sensor is used to test the heart rate sensor, students, artists, athletes, creators, game developers or mobile terminals can be developed and heart-related interactive works. Sensors can be worn on the finger or earlobe, can be connected to Arduino via the Internet line. It also has an open-source app program, you can put your real-time heart rate is displayed with the plot. Essence is an integrated optical amplifier and heart rate sensor noise elimination circuit.
The 4×4 Membrane Matrix Keypad is a compact and reliable 16-button keypad designed for microcontroller-based projects such as Arduino, Raspberry Pi, and other embedded systems. Its thin, flexible design with self-adhesive backing makes it easy to mount on flat surfaces or inside project enclosures.
The raindrop sensor module is used for rain detection. It is also for measuring rainfall intensity. The module includes a rain board and a control board that is separate for more convenience. It has a power indicator LED and an adjustable sensitivity though a potentiometer. The module is based on the LM393 op-amp. It includes a printed circuit board(control board) that “collects” the raindrops. As raindrops are collected on the circuit board, they create paths of parallel resistance that are measured via the op-amp. The lower the resistance (or the more water), the lower the voltage output. Conversely, the less water, the greater the output voltage on the analog pin. A completely dry board, for example, will cause the module to output five volts.
Electrolytic capacitors are polarized capacitors whose anode (+) is made of a metal that forms an insulating oxide layer through anodization. This oxide layer acts as the dielectric of the electrolytic capacitor. A non-solid or solid electrolyte covers the surface of this oxide layer, serving in principle as the second electrode (cathode) (-) of the capacitor. Electrolytic capacitors are typically used most in applications such as audio amplifiers of all types (hi-fi to mobile phones) and in power supply circuits
Electrolytic capacitors are polarized capacitors whose anode (+) is made of a metal that forms an insulating oxide layer through anodization. This oxide layer acts as the dielectric of the electrolytic capacitor. A non-solid or solid electrolyte covers the surface of this oxide layer, serving in principle as the second electrode (cathode) (-) of the capacitor. Electrolytic capacitors are typically used most in applications such as audio amplifiers of all types (hi-fi to mobile phones) and in power supply circuits
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