RTL-SDR is an affordable dongle that can be used as a computer-based radio scanner for receiving live radio signals between 500 kHz and 1.75 GHz in your area. The RTL-SDR V4 offers several improvements over generic brands including use of the R828D tuner chip, triplexed input filter, notch filter, improved component tolerances, a 1 PPM temperature compensated oscillator (TCXO), SMA F connector, aluminium case with passive cooling, bias tee circuit, improved power supply, and a built in HF upconverter. RTL-SDR V4 comes with the portable dipole antenna kit. It is great for beginners as it allows for terrestrial and satellite reception and easy to mount outdoors and designed for portable and temporary outside usage. Features Improved HF reception: V4 now uses a built-in upconverter instead of using a direct sampling circuit. This means no more Nyquist folding of signals around 14.4 MHz, improved sensitivity, and adjustable gain on HF. Like the V3, the lower tuning range remains at 500 kHz and very strong reception may still require front end attenuation/filtering. Improved filtering: The V4 makes use of the R828D tuner chip, which has three inputs. The SMA input has been triplexed input into 3 bands: HF, VHF and UHF. This provides some isolation between the 3 bands, meaning out of band interference from strong broadcast stations is less likely to cause desensitization or imaging. Improved filtering x2: In addition to the triplexing, the open drain pin on the R828D can be also used, which allows to add simple notch filters for common interference bands such as broadcast AM, broadcast FM and the DAB bands. These only attenuate by a few dB, but may still help. Improved phase noise on strong signals: Due to an improved power supply design, phase noise from power supply noise has been significantly reduced. Less heat: Another advantage of the improved power supply is low power consumption and less heat generation compared to the V3. Included 1x RTL-SDR V4 dongle (R828D RTL2832U 1PPM TCXO SMA) 2x 23 cm to 1 m telescopic antenna 2x 5 cm to 13 cm telescopic antenna 1x Dipole antenna base with 60 cm RG174 1x 3 m RG174 extension cable 1x Flexible tripod mount 1x Suction cup mount Downloads Datasheet User Guide Quick Start Guide SDR# User Guide Dipole Antenna Guide

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Raspberry Pi Pico Breadboard Kit helps the user to configure GPIO of Raspberry Pi Pico for use with external devices.Raspberry Pi Pico Breadboard Kit is a multi-purpose Kit that consists of a “400 points half-size breadboard” on top, a Programmable Buzzer, 4 programmable LEDs, 4 push buttons, and dedicated 5 V, 3V3, and GND pins at a single place. SB Components developed Raspberry Pi Pico Breadboard Kit with advanced features like independently controllable LEDs, Switches, a 400 points half-size breadboard that helps the user to prototype their projects with Raspberry Pi Pico in an efficient way.Raspberry Pi Pico Breadboard Kit can be interfaced with Raspberry Pi Pico from which a user can run electronics experiments, prototypes, mini robots, games, interact with Linux-ready Raspberry Pi, Exploration of circuits, etc. One can also connect external components with the breadboard provided on the top of the Raspberry Pi Pico Breadboard Kit.Features Four independent controlled LEDs Four independent controlled push buttons Compatible with Pico A 400 points half size breadboard Programmable buzzer Dedicated 5 V, 3V3 and Gnd pins for easy use Specifications Operating voltage 3.3 VDC Communication interface GPIO Dimensions 85 x 133 mm Applications Electrical experiments Prototypes Mini robots Games Exploration of circuits Downloads Manual Example codes Circuit diagram GitHub Included 1x Pico Breadboard Kit 5x Male to Male Jumper Wires 5x Female to Female Jumper Wires 5x Male to female Jumper Wires Note: Raspberry Pi Pico is not included.

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Pico Cube is a 4x4x4 LED cube HAT for Raspberry Pi Pico with 5 VDC operating voltage. Pico cube, a monochromatic Blue with 64 LEDs, is a fun way to learn programming. It is designed to perform incandescent operations with low energy consumptions, robust outlook, and easy installation that make people/kids/users learn the effects of LED lights with a different pattern of colors via the combination of software and hardware i.e. Raspberry Pi Pico. Features Standard 40 Pins Raspberry Pi Pico Header GPIO Based Communication 64 High-Intensity Monochromatic LEDs Individual LED access Each Layer Access Specifications Operating Voltage: 5 V Color: Blue Communication: GPIO LEDs: 64 Included 1x Pico Cube Base PCB 4x Layer PCB 8x Pillar PCB 2x Male Berg (1 x 20) 2x Female Berg (1 x 20) 70 LEDs Note: Raspberry Pi Pico is not included. Downloads GitHub Wiki

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Pico Cube is a 4x4x4 LED cube HAT for Raspberry Pi Pico with 5 VDC operating voltage. Pico cube, a monochromatic Green with 64 LEDs, is a fun way to learn programming. It is designed to perform incandescent operations with low energy consumptions, robust outlook, and easy installation that make people/kids/users learn the effects of LED lights with a different pattern of colors via the combination of software and hardware i.e. Raspberry Pi Pico. Features Standard 40 Pins Raspberry Pi Pico Header GPIO Based Communication 64 High-Intensity Monochromatic LEDs Individual LED access Each Layer Access Specifications Operating Voltage: 5 V Color: Green Communication: GPIO LEDs: 64 Included 1x Pico Cube Base PCB 4x Layer PCB 8x Pillar PCB 2x Male Berg (1 x 20) 2x Female Berg (1 x 20) 70 LEDs Note: Raspberry Pi Pico is not included. Downloads GitHub Wiki

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Pico Cube is a 4x4x4 LED cube HAT for Raspberry Pi Pico with 5 VDC operating voltage. Pico cube, a monochromatic Red with 64 LEDs, is a fun way to learn programming. It is designed to perform incandescent operations with low energy consumptions, robust outlook, and easy installation that make people/kids/users learn the effects of LED lights with a different pattern of colors via the combination of software and hardware i.e. Raspberry Pi Pico. Features Standard 40 Pins Raspberry Pi Pico Header GPIO Based Communication 64 High-Intensity Monochromatic LEDs Individual LED access Each Layer Access Specifications Operating Voltage: 5 V Color: Red Communication: GPIO LEDs: 64 Included 1x Pico Cube Base PCB 4x Layer PCB 8x Pillar PCB 2x Male Berg (1 x 20) 2x Female Berg (1 x 20) 70 LEDs Note: Raspberry Pi Pico is not included. Downloads GitHub Wiki

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The short-wave technique has a very particular appeal: It can easily bridge long distances. By reflecting short-wave signals off the conductive layers of the ionosphere, they can be received in places beyond the horizon and therefore can reach anywhere on earth. Although technology is striving for ever higher frequencies, and radio is usually listened to on FM, DAB+, satellite or the Internet, modern means of transmission require extensive infrastructure and are extremely vulnerable. In the event of a global power outage, there is nothing more important than the short-wave. Amateur radio is not only a hobby, it’s also an emergency radio system! Elektor’s SDR-Shield is a versatile shortwave receiver up to 30 MHz. Using an Arduino and the appropriate software, radio stations, morse signals, SSB stations, and digital signals can be received. In this book, successful author and enthusiastic radio amateur, Burkhard Kainka describes the modern practice of software defined radio using the Elektor SDR Shield. He not only imparts a theoretical background but also explains numerous open source software tools.

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The short-wave technique has a very particular appeal: It can easily bridge long distances. By reflecting short-wave signals off the conductive layers of the ionosphere, they can be received in places beyond the horizon and therefore can reach anywhere on earth. Although technology is striving for ever higher frequencies, and radio is usually listened to on FM, DAB+, satellite or the Internet, modern means of transmission require extensive infrastructure and are extremely vulnerable. In the event of a global power outage, there is nothing more important than the short-wave. Amateur radio is not only a hobby, it’s also an emergency radio system! Elektor’s SDR-Shield is a versatile shortwave receiver up to 30 MHz. Using an Arduino and the appropriate software, radio stations, morse signals, SSB stations, and digital signals can be received. In this book, successful author and enthusiastic radio amateur, Burkhard Kainka describes the modern practice of software defined radio using the Elektor SDR Shield. He not only imparts a theoretical background but also explains numerous open source software tools.

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Features Implements CAN V2.0B at up to 1 Mb/s Industrial standard 9 pin sub-D connector OBD-II and CAN standard pinout selectable. Changeable chip select pin Changeable CS pin for TF card slot Changeable INT pin Screw terminal that easily to connect CAN_H and CAN_L Arduino Uno pin headers Micro SD card holder 2 Grove connectors (I2C and UART) SPI Interface up to 10 MHz Standard (11 bit) and extended (29 bit) data and remote frames Two receive buffers with prioritized message storage

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Features ATmega32U4 with Arduino Leonardo bootloader on the board MCP2515 CAN Bus controller and MCP2551 CAN Bus transceiver OBD-II and CAN standard pinout selectable at the sub-D connector Compatible with Arduino IDE Parameter Value MCU ATmega32U4(with Arduino Leonardo bootloader) Clock Speed 16 MHz Flash Memory 32 KB SRAM 2.5 KB EEPROM 1 KB Operate Voltage（CAN-BUS） 9 V - 28 V Operate Voltage （MicroUSB） 5 V Input Interface sub-D Included CANBed PCBA sub-D connector 4PIN Terminal 2 x 4PIN 2.0 Connector 1 x 9x2 2.54 Header 1 x 3x2 2.54 Header

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The starter kit for Jetson Nano is one of the best kits for beginners to get started with Jetson Nano. This kit includes 32 GB MicroSD card, 20 W adapter, 2-pin jumper, camera, and micro-USB cable. Features 32 GB High-performance MicroSD card 5 V 4 A power supply with 2.1 mm DC barrel connector 2-pin jumper Raspberry Pi camera module V2 Micro-B To Type-A USB cable with DATA enabled

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The universal 4 Pin connector is a white 4-pin buckled connector used on Stem, Twigs and Grove cables. The pin spacing is 2 mm. There are 10 connectors per bag. They can be used in DIY projects.

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Features Selectable output format: Uart or Wiegand. 4Pins Electronic Brick Interface High Sensitivity Specifications Dimensions: 44 mm x 24 mm x9.6 mm Weight: 15 g Battery: Exclude Voltage: 4.75 V - 5.25 V Working Frequency: 125 kHz Sensing Distance(Max): 70 mm TTL Output: 9600 baud rate, 8 data bits, 1 stop bit, and no verify bit Wiegand Output: 26 bits Wiegand format, 1 even verify bit, 24 data bits, and 1 odd verify bit

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Grove 3-Axis Digital Accelerometer (LIS3DHTR) is a low-cost 3-Axis accelerometer in a bundle of Grove products. It is based on the LIS3DHTR chip which provides multiple ranges and interfaces selection. You can never believe that such a tiny 3-Axis accelerometer can support I²C, SPI, and ADC GPIO interfaces, which means you can choose any way to connect with your development board. Besides, this accelerometer can also monitor the surrounding temperature to tune the error caused by it. Features Measurement range: ±2g, ±4g, ±8g, ±16g, multiple ranges selection. Multiple interfaces option: Grove I²C interface, SPI interface, ADC interface. Temperature adjustable: able to adjust and tune the error caused by temperature. 3/5V power supply Specifications Power Supply 3/5V Interfaces IC/SPI/GPIO ADC I²C address Default 0x19, can be changed to 0x18 when connecting SDO Pin with GND ADC GPIO Power input 0-3.3V Interruption An interruption Pin reserved SPI Mode set up Connect the CS Pin with GND Included 1x Grove 3-Axis Digital Accelerometer (LIS3DHTR) 1x Grove cable Downloads LIS3DHTR Datasheet Hardware schematic Arduino Library

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Unlike most kits, the Grove Beginner Kit for Arduino is an all-in-one kit, no breadboard, no soldering, even no wiring is needed. The kit is powered by one Arduino compatible Board (Seeeduino Lotus) together with 10 additional Grove Arduino sensors all in one piece of the board. All the modules have been connected to the Seeeduino(Microcontroller) through the PCB stamp holes so no Grove cables are needed to connect. This is perfect for educational fields where frustrating wiring and soldering are no longer needed. Of course, you can also take the modules out and use Grove cables to connect the modules. You can build any Arduino project you like with this Grove Beginner Kit For Arduino. Included 1x Grove Beginner Kit For Arduino Board 1x Micro USB Cable 6x Grove Cables Included onboard 1x Grove LED 1x Grove Buzzer 1x Grove OLED Display 0.96" 1x Grove Button 1x Grove Rotary Potentiometer 1x Grove Light 1x Grove Sound 1x Grove Temperature & Humidity Sensor 1x Grove Air Pressure Sensor 1x Grove 3-Axis Accelerator 1x Seeeduino Lotus

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This is an add-on kit for the Seeed Studio Grove Beginner Kit for Arduino. Applications Suitable for Arduino beginners Suitable for infrared control and motion detect Suitable for getting started with open-source hardware and Arduino coding Included 1x Grove Water Atomization 1x Grove Mini Fan 1x Grove Servo 1x Grove Ultrasonic Distance Sensor 1x Grove Infrared Receiver 1x Grove Mini PIR Motion Sensor 1x Grove Green Wrapper 1x Grove Blue Wrapper 5x Grove Cable 1x Infrared Remote Control Key 1x Ultrasonic Sensor Bracket Set 1x Motor Bracket Set 1x Servo Base

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This Grove CAN-BUS Module based on GD32E103 adopts a brand-new design, uses the cost-effective and high-performance GD32E103 microcontroller as the main control and cooperates with a firmware we wrote to complete the function of the serial port to CAN FD. Features Support CAN communication: Implements CAN FD at up to 5 Mb/s Easy to program: Support AT command which enables simple serial port programming Grove ecosystem: 20 x 40 x 10 mm small size, 4-pin Grove connector to plug and play, Arduino compatible This Grove CAN-BUS Module supports CAN FD(CAN with Flexible Data-Rate) communication, which is an extension to the original CAN protocol as specified in ISO 11898-1 that responds to increased bandwidth requirements in automotive networks. In CAN FD, the data rate (i.e. number of bits transmitted per second) is increased to be 5 times faster than the classic CAN (5 Mbit/s for the data payload only, the arbitration bit rate is still limited to 1Mbit/s for compatibility). It supports AT command which enables simple serial port programming. This Grove CAN-BUS Module is based on GD32E103 with a frequency up to 120 MHz. It has a flash size from 64 KB to 128 KB and an SRAM size from 20 KB to 32 KB. Applications Car hacking: allows different parts of the vehicle to talk to each other, including the engine, the transmission, and the brakes. Windows, doors, and mirror adjustment. 3D Printers Building automation Lighting control systems Medical instruments and equipment Specifications MCU GD32E103 UART baud rate Up to 115200 (default 9600) CAN FD baud rate Up to 5 Mb/s Indicator TX and RX led Working voltage 3.3 V Grove connector 4-pin Grove connector to plug and play Size 20 x 40 x 10 mm Downloads Datasheet GitHub

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The Grove Capacitive Fingerprint Scanner/Sensor is based on the KCT203 Semiconductor fingerprint recognition module, including a high-performance MCU, a vertical RF push-type fingerprint sensor, and a touch sensing device. This module features many advantages such as small size, small fingerprint template, low power consumption, high reliability, fast fingerprint recognition, etc. In addition, it is worth mentioning that there is a lovely RGB light around this module to indicate whether the fingerprint recognition is successful. The system is equipped with a high-performance fingerprint algorithm, and the self-learning function is remarkable. After each successful fingerprint recognition, the latest challenge feature values can be integrated into the fingerprint database to continuously improve the fingerprint features, making the experience better. Applications Fingerprint lock devices: door locks, safes, steering wheel locks, padlocks, gun locks, etc. Fingerprint sign-in, access control system Specifications CPU GD32 Fingerprint Template Storage Max. 100 Connector Grove UART Sensor Resolution 508 DPI Sensor Pixel 160x160 False Rejection Rate <1% False Acceptance Rate <0.005% Match Response Time(1:N Mode) <350ms Match Response Time(1:1 Mode) <7ms Sensor Size Φ14.9mm Frame Size Φ 19mm Power Consumption Full speed: ≤40 mA; Sleep: ≤12 uA Operating Voltage 3.3 V / 5 V Operating Temperature -20 ~ 70 ℃ ESD Protection Non-contact 15 KV, contact 8 KV Included 1x KCT203 Semiconductor fingerprint recognition module 1x Sensor cable 1x Grove cable 1x Grove driver board Documentations Grove Capacitive Fingerprint Scanner/Sensor eagle file Grove Capacitive Fingerprint Scanner/Sensor code Wiki

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The Grove SCD30 is an Arduino-compatible 3-in-1 environmental sensor for precise CO₂, temperature, and humidity measurements. Powered by the Sensirion SCD30 and advanced Non-Dispersive Infrared (NDIR) technology, it delivers high accuracy across a wide measurement range. The sensor also determines humidity and temperature through smart algorithms that model and compensate for external heat sources. Features NDIR CO2 sensor technology: embedded with Sensirion SCD30 Multi-function: Integrates temperature and humidity sensor on the same sensor module High precision and wide measurement accuracy: ±(30 ppm + 3%) between 400 ppm to 10000 ppm Superior stability: Dual-channel detection Easy project operation: Digital interface I²C, Breadboard-friendly, Grove-compatible Best performance-to-price ratio Application Ideas Air Purifier Environmental Monitoring Plant Environmental Monitoring system Arduino weather station

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The Grove DHT11 Temperature & Humidity Sensor is a high-quality, low-cost digital temperature, and humidity sensor based on the DHT11 module. It is the most common temperature and humidity module for Arduino and Raspberry Pi. It is widely favored by hardware enthusiasts for its many advantages such as low power consumption and excellent long-term stability. Relatively high measurement accuracy can be obtained at a very low cost. The single-bus digital signal is output through the built-in ADC, which saves the I/O resources of the control board. Features Dimensions: 40 x 20 x 8 mm Weight: 10 g Battery: Exclude Input Voltage: 3.3 V & 5 V Measuring Current: 1.3 mA- 2.1 mA Measuring Humidity Range: 5% - 95% RH Measuring Temperature Range: -20 ℃ - 60 ℃

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