This polysilicon solar panel (18 V/10 W) provides stable performance with a high conversion efficiency of >20%. Specifications Solar cell type Polysilicon Output power tolerance ±3% Operating voltage 17.6 V Open circuit voltage 21.6 V Cell quantity 36 (4x9) Power 10 Wp (max) Conversation efficiency >20% Operating current 0.57 A Short circuit current 0.61 A Standard system voltage 1000 V (Max) Operating temperature -40°C ～ +85°C Pressure on panel 30 m/s (200 kg/sq.m) (Max) Cable Length 90 cm, DC plug, OD 3.5 mm ID 1.35 mm Frame material Anodic oxidation aluminum alloy Dimensions 340 x 232 x 17 mm Weight 0.935 kg

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The Waveshare 400 GPIO Header Extension is designed for Raspberry Pi 400 and provides a color-coded header and easy expansion. Features Designed for Raspberry Pi 400 Color-Coded Header Easy Expansion Included 1x PI400-GPIO-ADAPTER-B 1x Screws pack

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Waveshare RP2040-PiZero is a high-performance and cost-effective microcontroller board with onboard DVI interface, TF card slot and PIO-USB port, compatible with Raspberry Pi 40-pin GPIO header, easy to develop and integrate into the products. Features RP2040 microcontroller chip designed by Raspberry Pi Dual-core ARM Cortex M0+ processor, flexible clock running up to 133 MHz 264 KB of SRAM, and 16 MB of onboard Flash memory Onboard DVI interface can drive most HDMI screens (DVI compatibility required) Supports using as a USB host or slave via onboard PIO-USB port Onboard TF card slot for reading and writing TF card Onboard Lithium battery recharge/discharge header, suitable for mobile scenarios USB 1.1 with device and host support Drag-and-drop programming using mass storage over USB Low-power sleep and dormant modes 2x SPI, 2x I²C, 2x UART, 4x 12-bit ADC, 16x controllable PWM channels Accurate clock and timer on-chip Temperature sensor Accelerated floating-point libraries on-chip Downloads Wiki

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This camera module adopts a SmartSens SC3336 sensor chip with 3 MP resolution. It features high sensitivity, high SNR, and low light performance and it is capable of a more delicate and vivid night vision imaging effect, and can better adapt to ambient light changes. Also, it is compatible with Luckfox Pico series boards. Specifications Sensor Sensor: SC3336 CMOS size: 1/2.8" Pixels: 3 MP Static resolution: 2304x1296 Maximum video frame rate: 30fps Shutter: Rolling shutter Lens Focal length: 3.95 mm Aperture: F2.0 FOV: 98.3° (diagonal) Distortion: <33% Focusing: Manual focus Downloads Wiki

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This solar power management module is designed for 6~24 V solar panel. It can charge the 3.7 V rechargeable Li battery through solar panel or USB connection, and provides 5 V/1 A or 3.3 V/1 A regulated output. The module features MPPT (Maximum Power Point Tracking) function and multi protection circuits, therefore, it is able to keep working with high-efficiency, stability, and safety. It is suited for solar powered, low-power IoT, and other environmental protection projects. Features Supports MPPT (Maximum Power Point Tracking) function, maximizing the efficiency of the solar panel Supports solar panel / USB connection battery charging For 6~24 V solar panel, DC-002 jack input or screw terminal input Onboard MPPT SET switch, select the level closed to input level to improve charging efficiency Onboard two power output interfaces: USB port for 5 V output, pinheader for 3.3 V or 5 V output Onboard high capacity aluminum electrolytic capacitor and SMD ceramic capacitor, reducing the ripple, stable performance 14500 battery holder and PH2.0 battery connector, for connecting multi kinds of 3.7 V rechargeable Li battery Several LED indicators, for monitoring the status of solar panel and battery Multi protection circuits: over charge / over discharge / reverse protection / over heat / over current, stable and safe to use Specifications Solar In 6~24 V (6 V by default) Recharging USB Battery 3.7 V 850mAh 14500 Li-ion battery (NOT included) USB input 5 V (Micro USB) 5 V output 5 V/1 A (USB OUT, pin header) 3.3 V/1 A (pin header) Recharging cutoff voltage 4.2 V ±1％ Over discharging protection voltage 2.9 V ±1％ Solar panel recharging efficiency ~78% USB recharging efficiency ~82% Batteries boost outout efficiency ~86% Quiescent current (max) <2 mA Operating temperature -40°C ~ 85°C Dimensions 65.2 x 56.2 x 22.9 mm Note: 14500 battery is NOT included. Downloads Wiki

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This is an I/O expansion kit designed for Raspberry Pi, which provides 5 sets of 2x20 pinheaders, that means a handy way to 'stack' multi different HATs together, and use them as a specific combination / project. Features Standard Raspberry Pi connectivity, directly pluggable OR through ribbon cable 5 sets of 2x20 pinheaders, connect multi HATs together USB external power port, provides enough power supply for multi HATs Clear and descriptive pin labels for easy use Reserved jumper pads on the bottom side, pin connections are changeable by soldering, to avoid pin conflicts Note: make sure there are no any pin conflicts between the HATs you want to use together before connecting. Specifications Dimensions: 183 × 65 mm Mounting hole size: 3 mm Included 1x Stack HAT 1x Ribbon cable 40-Pin 1x 2x20 male pinheader 1x RPi screws pack (4pcs) x1

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This mini WiFi board has 16 MB flash, external antenna connector and built-in ceramic antenna based on ESP8266EX. Features 11 digital input/output pins Interrupt/pwm/I²C/one-wire 1 analog input (3.2 V max input) 16 MB Flash External antenna connector Built-in ceramic antenna CP2104 USB-TO-UART IC Specifications Operating Voltage 3.3 V Digital I/O Pins 11 Analog Input Pins 1 (3.2 V max) Clock Speed 80/160 MHz Flash 16 MB Size 34.2 x 25.6 mm Weight 3 g Pin Configuration Pin Function ESP8266 Pin RX RXD RXD A0 Analog input, max 3.2 V A0 D0 IO GPIO16 D1 IO, SCL GPIO5 D2 IO, SDA GPIO4 D3 IO, 10k Pull-up GPIO0 D4 IO, 10k Pull-up, BUILTIN_LED GPIO2 D5 IO, SCK GPIO14 D6 IO, MISO GPIO12 D7 IO, MOSI GPIO13 D8 IO, 10k Pull-down, SS GPIO15 G Ground GND 5V 5 V - 3V3 3.3 V 3.3 V RST Reset RST Included 1x Wemos D1 mini Pro (based on ESP8266EX) 2x Pin header (short) 2x Female connector strip (short) 2x Female connector strip (long)

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4 LEDs and 4 push buttons ensure hours of fun. Repeat the combination, harder and harder, faster and faster. The microprocessor-controlled game has 4 different difficulty levels and low consumption. The sound and/or LED indication are adjustable. To save the three 1.5 V AA batteries (not included), the kit automatically switches itself off when not in use. Downloads Manual

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The Whadda E12 is a high-quality carbon film resistor set comprising 610 pieces, with 10 pieces for each of the 61 standard E12 series values ranging from 10 Ω to 1 MΩ. Each resistor has a power rating of 0.25 W, a tolerance of 5%, and can operate within a temperature range of -55°C to 155°C. The maximum operating voltage is 250 V. These resistors are suitable for applications in TVs, audio and video equipment, telephone receivers, communication systems, instrumentation, and home appliances.

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The Christmas tree with flashing LEDs takes the coziness of Christmas to a new level! With 16 flashing LEDs, this green Christmas tree creates a warm atmosphere. With very low power consumption and the option to be powered by a 9-volt battery (not included), this Christmas decoration is easy to use. Enjoy the holidays with this atmospheric addition to your decoration collection. Downloads Manual

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This electronic dice with 7 red LEDs rolls when the push button is released and works with a 9 V battery (not included). Downloads Manual

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Valentine's Hearts, 28 blinking LEDs, romantic LED lighting Valentine's Hearts – 28 blinking LEDs for a romantic atmosphere. The perfect Valentine's gift to express your love. Battery-powered and portable, ideal for Valentine's Day. Downloads Manual

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This educational soldering kit is suitable for all kinds of applications such as model making and works with a 9 V battery (not included). You can control the flashing speed with two potentiometers. Downloads Manual

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The Theremin was the first music synthesizer. The Junior Theremin is our, smaller, version of that classic electronic musical instrument. As you move your hand towards and away from the wire aerial, the Theremin responds by changing the pitch of the note it is playing. It can play individual notes as well as varying the tone of a single note. How do you use the theremin? The wire aerial responds to the movement of your hand towards and away from it and changes the pitch of the note it plays, without actually being touched. Junior Theremin works in two modes – continuous and discrete. When you first connect the battery Junior Theremin is in continuous mode. Pressing both pushbuttons together switches between continuous and discrete modes. Discrete mode, as its name implies, plays individual or discrete notes rather than a continuously variable tone. Eight notes over a single octave are available. In discrete mode the two pushbuttons change the octave of the notes. The left-hand pushbutton (marked -) lowers the octave, and the right-hand pushbutton (marked +) raises the octave. The pushbuttons only change the octave so long as they are pressed. In continuous mode the pushbuttons have no effect. Downloads Manual

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When playing a board game, do you find it annoying when you push away all the pawns with the dice? Or when friends try to cheat by manipulating the dice? With this soldering kit, this is a thing of the past. Instead of pressing a button, you activate this microprocessor-controlled dice by shaking. The 7 flashing LEDs run out slowly and the final combination is displayed flashing. The kit works with one CR2025 or one CR2032 button cell (not included). Downloads Manual

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Looking for a fun DIY Christmas project? Assemble and program this extra-large Poly Reindeer figurine and make its LEDs shine all the colors of the rainbow! Ideal for both beginners and advanced makers! This educational and fun kit combines soldering and programming skills in one XL-sized project. First, you will need to solder some simple components onto the copper plated circuit board. The components include fancy RGB LEDs that have a special diffused effect. Once the soldering work is finished, you will be able to program the colors and light effects of the different LEDs thanks to the onboard Arduino Nano Every. The Arduino will be pre-programmed with some basic LED effects, so your kit will work once you power it with the included adaptor. Or you can choose to write your own code based on the available example code. Programmable add-ons The printed circuit board of this project is designed especially so you can add different add-ons. For example, add an OLED screen to display messages or program it to countdown the days until Christmas! Or add an IoT Tuya chip so your project can communicate with your smartphone. You can even add a sound microphone, motion sensor or light sensor. Features XL-sized & copper plated circuit board (PCB) in the shape of a polymetric reindeer 22 addressable (programmable) RGB LEDs 14 x 5 mm RGB LEDs 10 x 8 mm RGB LEDs Arduino Nano Every Onboard push button USB A to USB micro cable for programming USB A to USB B cable for power supply Wooden holder Complete manual and video available in 5 languages Example code for Arduino available Educational & fun for all ages and skill levels Expandable with lots of add-ons: an OLED screen a smart IoT sensor to connect with your smartphone a microphone sensor and more! Not included: soldering iron, soldering tin, pliers and an soldering mat Specifications Dimensions: 168 x 270 mm Power supply: 5 V/2.1 A max. (cable included)

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From Theory to Practical Applications in Wireless Energy Transfer and Harvesting Wireless power transmission has gained significant global interest, particularly with the rise of electric vehicles and the Internet of Things (IoT). It’s a technology that allows the transfer of electricity without physical connections, offering solutions for everything from powering small devices over short distances to long-range energy transmission for more complex systems. Wireless Power Design provides a balanced mix of theoretical knowledge and practical insights, helping you explore the potential of wireless energy transfer and harvesting technologies. The book presents a series of hands-on projects that cover various aspects of wireless power systems, each accompanied by detailed explanations and parameter listings. The following five projects guide you through key areas of wireless power: Project 1: Wireless Powering of Advanced IoT Devices Project 2: Wireless Powered Devices on the Frontline – The Future and Challenges Project 3: Wireless Powering of Devices Using Inductive Technology Project 4: Wireless Power Transmission for IoT Devices Project 5: Charging Robot Crawler Inside the Pipeline These projects explore different aspects of wireless power, from inductive charging to wireless energy transmission, offering practical solutions for real-world applications. The book includes projects that use simulation tools like CST Microwave Studio and Keysight ADS for design and analysis, with a focus on practical design considerations and real-world implementation techniques.

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From Theory to Practical Applications in Wireless Energy Transfer and Harvesting Wireless power transmission has gained significant global interest, particularly with the rise of electric vehicles and the Internet of Things (IoT). It’s a technology that allows the transfer of electricity without physical connections, offering solutions for everything from powering small devices over short distances to long-range energy transmission for more complex systems. Wireless Power Design provides a balanced mix of theoretical knowledge and practical insights, helping you explore the potential of wireless energy transfer and harvesting technologies. The book presents a series of hands-on projects that cover various aspects of wireless power systems, each accompanied by detailed explanations and parameter listings. The following five projects guide you through key areas of wireless power: Project 1: Wireless Powering of Advanced IoT Devices Project 2: Wireless Powered Devices on the Frontline – The Future and Challenges Project 3: Wireless Powering of Devices Using Inductive Technology Project 4: Wireless Power Transmission for IoT Devices Project 5: Charging Robot Crawler Inside the Pipeline These projects explore different aspects of wireless power, from inductive charging to wireless energy transmission, offering practical solutions for real-world applications. The book includes projects that use simulation tools like CST Microwave Studio and Keysight ADS for design and analysis, with a focus on practical design considerations and real-world implementation techniques.

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Features RP2040 microcontroller with 2 MB Flash Dual-core cortex M0+ at up to 133 MHz 264 KB multi-bank high performance SRAM External Quad-SPI Flash with eXecute In Place (XIP) High performance full-crossbar bus fabric 30 multi-function General Purpose IO (4 can be used for ADC) 1.8-3.3 V IO Voltage (NOTE. Pico IO voltage is fixed at 3.3 V) 12-bit 500 ksps Analogue to Digital Converter (ADC) Various digital peripherals 2× UART, 2× I²C, 2× SPI, 16× PWM channels 1× Timer with 4 alarms, 1× Real Time Counter 2× Programmable IO (PIO) blocks, 8 state machines total Flexible, user-programmable high-speed IO Can emulate interfaces such as SD Card and VGA Includes W5100S Supports Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE Supports 4 Independent Hardware SOCKETs simultaneously Internal 16 KB Memory for TX/ RX Buffers SPI Interface Micro-USB B port for power and data (and for reprogramming the Flash) 40 pin 21x51 'DIP' style 1mm thick PCB with 0.1' through-hole pins also with edge castellations 3-pin ARM Serial Wire Debug (SWD) port 10 / 100 Ethernet PHY embedded Supports Auto Negotiation Full / Half Duplex 10 / 100 Based Built-in RJ45 (RB1-125BAG1A) Built-in LDO (LM8805SF5-33V) Downloads RP2040 Datasheet W5100S Datasheet Schematic & Part list & Gerber File C/C++ Examples CircuitPython Examples

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W6100-EVB-Pico is a microcontroller evaluation board based on the Raspberry Pi RP2040 and fully hardwired TCP/IP controller W6100 – and basically works the same as Raspberry Pi Pico board but with additional Ethernet via W6100. Features RP2040 microcontroller with 2 MByte Flash Dual-core cortex M0+ at up to 133 MHz 264 kByte multi-bank high performance SRAM External Quad-SPI Flash with eXecute In Place (XIP) High performance full-crossbar bus fabric 30 multi-function General Purpose I/O (4 can be used for ADC) 1.8-3.3 V I/O voltage (Note: Pico I/O voltage is fixed at 3.3 V) 12-bit 500 ksps Analogue to Digital Converter (ADC) Various digital peripherals 2x UART, 2x I²C, 2x SPI, 16x PWM channels 1x Timer with 4 alarms, 1x Real Time Counter 2x Programmable IO (PIO) blocks, 8 state machines total Flexible, user-programmable high-speed I/O Can emulate interfaces such as SD card and VGA Includes W6100 Supports Hardwired Internet Protocols: TCP, UDP, IPv6, IPv4, ICMPv6, ICMPv4, IGMP, MLDv1, ARP, PPPoE Supports 8 independent SOCKETs simultaneously with 32 KB memory Internal 16 Kbytes Memory for TX/RX Buffers SPI Interface Micro-USB B port for power and data (and for reprogramming the Flash) 40-pin 21x51 ‘DIP’ style 1 mm thick PCB with 0.1' through-hole pins also with edge castellations 3-pin ARM Serial Wire Debug (SWD) port 10 / 100 Ethernet PHY embedded Supports Auto Negotiation Full / Half Duplex 10 / 100 Based Built-in RJ45 (RB1-125BAG1A) Built-in LDO (LM8805SF5-33V) Downloads Documents Getting started on GitHub Firmware

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Raspberry Pi Pico EVB combined with the WizFi360-PAWizFi360-EVB-Pico is based on Raspberry Pi RP2040 and adds Wi-Fi connectivity using WizFi360. It is pin-compatible with Raspberry Pi Pico board and can be used for IoT Solution development.Specifications RP2040 microcontroller with 2 MByte Flash Dual-core cortex M0+ at up to 133 MHz 264 kByte multi-bank high performance SRAM External Quad-SPI Flash with eXecute In Place (XIP) Includes WizFi360-PA Supports Hardwired Internet Protocols: TCP, UDP, WOL over UDP, ICMP, IGMPv1/v2, IPv4, ARP, PPPoE WiFi 2.4G, 802.11 b/g/n Support Station / SoftAP / SoftAP+Station operation modes Support “Data pass-through” and “AT command data transfer” mode Support serial AT command configuration Support TCP Server / TCP Client / UDP operating mode Support configuration of operating channel 0 ~ 13 Support auto 20 MHz / 40 MHz bandwidth Support WPA_PSK / WPA2_PSK encryption Support built-in unique MAC address and user configurable Industrial grade (operating temperature range: -40°C ~ 85°C) CE, FCC certification Includes 16 Mbit Flash Memory Micro-USB B port for power and data (and for reprogramming the Flash) 40 pin 21×51 ‘DIP’ style 1mm thick PCB with 0.1' through-hole pins also with edge castellations 3-pin ARM Serial Wire Debug (SWD) port Built-in LDO DownloadsDocumentation

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After power on, YDLIDAR G4 start rotating and scanning the environment around it. The scanning distance is 16 m and the device offers a scanning rate of 9,000 times per second. It makes detailed examinations of its environment and can locate the smallest of objects surrounding it. Featuring a high-precision brushless motor and encoder disc mounted on bearings, it rotates smoothly and has a service life of up to 500,000 hours of operation. The G4 is an inexpensive solution for projects that require obstacle detection, obstacle avoidance, and/or simultaneous localization and mapping (SLAM). All YDLIDAR products are ROS ready. Features 360 degree 2D range scanning Stable performance, high precision 16 m range Strong resistance to environmental light interference Brushless motor drive, stable performance FDA Laser safety standard Class I 360 degree omnidirectional scanning, 5-12 Hz adaptive scanning frequency OptoMagnetic technology Wireless data communication Scanning rate of 9000 Hz Downloads Datasheet User Manual Development Manual SDK Tool ROS

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YDLIDAR TG15 is a 360-degree two-dimensional rangefinder. Based on the principle of TOF, it is equipped with related optics, electricity, and algorithm design to achieve high-frequency and high-precision distance measurement. The mechanical structure rotates 360 degrees to continuously output the angle information as well as the point cloud data of the scanning environment while ranging. Features 360 degree omnidirectional scanning ranging distance measurement Small distance error, stable performance and high accuracy IP65 protection level Strong resistance to ambient light interference Industrial grade brush-less motor drive for stable performance Laser power meets Class I laser safety standards 5-12 Hz adaptive scanning frequency (support customization) Photomagnetic fusion technology to achieve wireless communication, wireless power supply Ranging frequency up to 20 kHz (support customization) Applications Robot navigation and obstacle avoidance Industrial automation Robot ROS teaching and research Regional security Smart transportation Environmental scanning and 3D reconstruction Commercial robot /Robot vacuum cleaner Downloads Datasheet User Manual Development Manual SDK Tool ROS

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YDLIDAR X4PRO is a 360 degrees two-dimensional rangefinder. Based on the principle of triangulation, it is equipped with related optics, electricity, and algorithm design to achieve high-frequency and high- accuracy distance measurement. The mechanical structure rotates 360 degrees to continuously output the angle information as well as the point cloud data of the scanning environment while ranging. Features 360 degrees omnidirectional scanning ranging distance measurement Small distance error, stable performance and high accuracy Wide ranging distance Strong resistance to ambient light interference Low power consumption, small size and long service life Laser power meets Class I laser safety standards Adjustable motor speed, scanning frequency is 6~12 Hz High-speed ranging, ranging frequency up to 5 kHz Applications Robot navigation and obstacle avoidance Robot ROS teaching and research Regional security Environmental scanning and 3D reconstruction Navigation and obstacle avoidance of robot vacuum cleaner/ROS Learning robot Specifications Range Frequency 5000 Hz Scan Frequency 6-12 Hz Range Distance 0.12 10 m Scan Angle 360° Angle Resolution 0.43-0.85° Dimensions 110.6 x 71.1 x 52.3 mm Downloads Datasheet User Manual Development Manual SDK Tool ROS

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