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This is a low cost Red Laser Diode in Copper Casing. The Mean Wave Length is 650nm and the Power Rating is 5mW.

Specifications

• Output Power: 5mw 
• Wavelength: 650nm
• Working Voltage: 3~5V
• Working Temperature: +10 ~ +40 Celsius
• Laser Shape: line / point / cross
• Focusable: Yes
• Material: Metal
• Dimensions : 12mmx12mmx40mm

What's in the box?

1 x 3V 650nm 5mW Red Dot Diode Laser Heads

• Voltage input range: DC0-25V
• Voltage detection range: DC0.02445V-25V
• Voltage analog resolution: 0.00489V

• the positive terminal connected to VCC,
• the negative  connected to GND
• Output interface:
• "+" is 5V or 3.3V
• "-" then GND
• "s" Arduino connected to the AD pin

• Raspberry Pi https://kookye.com/2017/06/01/design-a-voltmeter-with-the-raspberry-pi-board-and-voltage-sensor/
• Interfacing Voltage Sensor with Arduino - Measure up to 25V using Arduino, tutorial  by Ravi in Electronics Hub
• Arduino 25V Voltage Sensor Module User Manual, by Henry's Bench
• Arduino Voltage Sensor 0-25V, by Superfish1000 in Instructables

• Chip: TCS230
• Input voltage: DC 3V-5V
• Output frequency voltage: 0 ~ 5V
• Use bright white LED lights
• Can be connected directly with Microcontroller
• Static detection of the measured object color
• Best detection distance: 10mm

• Interface : USB Type C Female to USB Type C Male
• Current : 3A
• Length : 270mm approx
• Weight : 34g approx
• Use for : Raspberry Pi 4
• With ON/OFF switch button , so that you can power on and off the Raspberry Pi conveniently.
• Colour: black

Raspberry pi 40 pin male to female flat ribbon cable specifically designed to fit directly onto the GPIO Headers pins of the Raspberry Pi on one side and a HAT on the other.

Please note: Pi400 is not included

Specifications

• 40 pin
• male to female
• GPIO Header connector
• 10cm long

What's in the box?

1 x male to female ribbon Cable

This Plusivo Potentiometer Assortment Kit includes:

• 1Kohm -100Kohm Multiturn Trimmer
• 1Kohm -1Mohm Single Linear - High Precision Variable Resistor with Knobs.
• Aside from the trimmers, resistors, and knobs inside the box, you will find a mini screwdriver as a bonus.

Features

• The potentiometer kit contains Multiturn Trimmers, Linear-High Precision Variable Resistor with Knobs.
• Contains nuts and washers
• Free Mini Screwdriver
• 10 Type of Single Linear-High Precision Variable Resistor.
• 5 types of multiturn trimmer.

PLA plastic is a biodegradable thermoplastic, made from renewable resources like sugarcane or corn starch or soybeans. When it melts, there is no smell, so it is very comfortable to use in the home or classroom.


Specifications

• High strength, good toughness
• Density is small, when printing larger volume model lighter, save money
• Cost-effective as it can be processed in a wide range temperature
• PLA has a low shrinkage rate, even print larger models perform well
• To be applied to a variety of 3D printer, Makerbot, UP plus, Mendel, Prusa, series, etc
• Environmental friendly PLA material, no bubble exited, accurate filament diameter 
Smooth product surface and few wrinkling and good flow-ability
• Non-toxic and no smell

• Colour: 3 Colours (Random)
• Quantity: 3
• Material: PLA
• PLA: 190 - 220° C
• Diameter:1.75mm
• Length: 9 meters (3 meters each color)
• Usage: 3D Printing Pen
• Section Shape: Round

• Has better performance
• Designed for home and office network
• Backwards compatible with CAT-5e and CAT-5 environment
• RJ45 connectors at both ends of the cable
• Compatible on most devices. e.g: Computer, router, etc

• Type: CAT6 Flat Gigabit Ethernet cable
• Data speed: Up to 1 Gbps
• Transmission frequencies: Up to 250 MHz
• Colour: Skyblue
• Length: 2 meters

Features and specifications

• They are small and compact, so they can be brought anywhere.
• Powered by a single USB cable, have NO volume control knob, easy to use.
• Anti-interference and stereo sound.
• Crystal-clear treble.
• Space-saving design, they can be conveniently placed next to your PC monitors without compromising on valuable desk space.
• Built-in 2 speakers, balance and enhance the sound of your laptop, notebook, computer, PC, tablets, good for work, music, movies, games, etc.
• Acoustic quality stereo sound, let your room filled with music, movies, or computer games.
• No driver is needed for Windows, Linux and macOS, just plug and play!
• Great for
  • Enhance any media experience while at home, office, kitchen, basement, or on the go.
  • Upgrade to your computer's weakened or faint internal speakers. Perfect USB Speakers for Windows PCs, Desktop Computer, Laptop.
  • Daily listening, static listening at home or office.
• Material: Plastic
• Output Power: 3W*2
• Channel: 2.0
• Frequency Response Range: 25Hz-20KHz
• Separation: ≥40dB
• Power Supply: USB 5V
• SNR: ≥80dB
• Voltage: 5V
• Connectivity: USB
• Number of speakers: 2
• USB Cable Length: 47 inches
• Connection radius: direct connection

What's in the box?

This is the jumper wires that I have been dreaming of :) This is a box full of color-coded assortment of small jumper wires, great for prototyping. And it is pre-cut, stripped and bent at both ends with the standard breadboard spacing, perfect for classroom and when you do experiment with breadboard.

The best is it comes in a proper plastic box. There are 140 wires in total with different lengths. So get ready for it.

Features

• Wide application: designed to work well with any breadboards or anywhere jumper wires are needed, perfect for breadboard projects.
• Easy to use: all the colored jumper wires are pre-stripped and preformed right-angled, easy to insert into breadboard.
• Complete specification: this kit includes 14 different lengths of jumper wires which can satisfy all your need.
• Storage box: come with a free plastic box, keep your jumper wire kit organized, convenient for store and fetch.
• These leads are flexible, durable and easy to connect and disconnect, ideal for prototyping use.

Specifications

• Material: Plastic Metal.
• Quantity: 140 pcs.
• Colour: Rainbow color with red, yellow, green, white, blue, orange and grey.
• Wire Length: 2, 5, 7, 10, 12, 15, 17, 20, 22, 25, 50, 75, 100, 125mm (10pcs of each length).

What's in the box ?

140 x Jumper Wires
1 x Storage Box


You might also need....

Breadboard not included - Click HERE to get yours !

• Appropriate for extracting PLCC, PGA, PCLL and IC packed by DIP from SOCKET or PCB
• By gripping your hand you can extract the IC vertically and perfectly
• Great for extracting dense IC
• Metal and shielded plastic to avoid static charge damage to IC components
• Small hook for easy extracting IC and installation
• Perfect for repair man, such as TV / DVD / PC technicians or IC workers

• Colour: Clear
• Material: Acrylic, please tear off the protective cover
• Size: ~ 50mm x 36mm x 3mm
• Stationary ultrasonic sensor modules
• Matches HC-SR04 ultrasonic sensor module
• Two mounting holes with M3 diameter (3.0mm)
• Distance between two mounting holes: ~ 14mm

This Smart Coding Kit is a wearable device based on micro:bit button cell extension board Pro, a DIY micro:bit watch can be easily made with a simple installing method.

Features

• A DIY (Do It Yourself) Watch kit
• Designed for micro:bit
• Works with both the micro:bit V1 and micro:bit V2
• Comes with sample code (in the guide)
• Power with Coin Cell battery (CR2025 or CR2016)
• Comes with Strap
• Easy to assembly

You will need 2 x CR2025 batteries
and a micro:bit to complete the watch.

Resources

• Detailed Guide for assembly and coding available at https://www.elecfreaks.com/learn-en/microbitKit/smart_coding_kit/index.html

• Sensitivity Range: 90V-1000V AC 50-60Hz
• Voltage Indication: Beeper, LED Flashing
• Power Requirement: 2 AAA batteries (not included)
• Dimension: 160 x 17 x 18mm
• Auto power-off:Yes
• Low Battery Power Indication:Yes

• Wide Testing Range,within 90-1000V AC (Malaysia is 240VAC), All Electric Appliances in Your Family can be Tested by it.
• High Efficiency. As long as voltage is detected, the LED in the tester pen will illuminates. It is easy to notice. And this voltage pen detector is powered by 2 AAA batteries(not included).
• 100% Safe. The Voltage Pen Tester detects Voltage in a non-contact way, so do not worry about there could be any possibility of being shocked by the electricity.
• High Quality. Being a home electrician , you will do the job better with it.
• Easy to use. LED in the voltage tester pen can illuminate the working environment. You can use the Non Contact Voltage Detector in circuit breakers, lighting fixtures, switches, outlets, wires and anywhere you need it.

• Tools and sizes: 30 x bit (length: 2.7cm), 1 x handle( length: 10.5cm), 1 x extension bar (length: 10.1cm)
• Screwdriver type:
  • Pentacle: 0.8, 1.2, 2.0
  • Flathead: 1.5, 2.0, 2.5, 3.0, 4.0
  • Tri-wing: 2.0, 3.0
  • Triangle: 2.0, 2.3
  • Hexagon: 1.5, 2.0, 2.5, 3.0, 3.5, 4.0
  • U-shaped: 2.3
  • Philips: PH000, PH00, PH0, PH1, PH2
  • Torx: T4, T5, T6, T8, T9, T10;
• Complete specifications screwdriver bit can adapt to a variety of areas of operations.
• The bit with high-quality chromium-vanadium alloy steel, durable and wearable.
• The handle is designed according to the shape of a hand, which is helpful to increase torque.

• Steel Material: Chromium-vanadium Alloy Steel
• Magnetized socket to help hold screw and nuts during assembly or disassembly
• Screw Head Type: All-in-One
• Special function: Disassembling or Repairing Mobile Phone, PC or Toy
• Application: Household Appliances, Mobile phone, Tablet PC
• Package size (L x W x H): 12.20 x 7.50 x 3.30 cm or 4.84 x 3.00 x 1.3 inches

This is a Basic Soldering Wire and Rosin Paste Kit. It contains a set of soldering accessories including solder paste, solder wire and other bonus items for hobbyists, electronics and electrical learners, enthusiasts, beginners, and professionals. It is suited for purposes such as DIY soldering projects, electronics repairs, home crafts-making, and many more.

Specifications

• Solder wire and rosin paste kit
  • It includes the most commonly used diameter for lead solder and high quality soldering paste as accessories for electrical soldering.
• 0.6mm diameter solder alloy and high-quality rosin flux that is essential in electrical soldering.
• Bonus items included
  • Black and red wires and mini screwdriver and other bonus included inside.
• Durable box included
  • It helps in keeping the contents organized, secured and for easy transport of the kit anywhere.

What's in the box?

1 x 50 g of 0.6mm diameter 60-40 Sn/Pb solder wire
1 x rosin paste

Bonus items

1 x black AWG 22 tinned copper silicone wire
1 x red AWG 22 tinned copper silicone wire
2 x mini screwdriver

16 in 1 Building:bit Programmable Building Block Kits

The Building:bit comes with the Super:bit Expansion board and it works with both micro:bit V1 and micro:bit V2(micro:bit not included)


16-in-1 superkit programmable building block kit is designed based on BBC micro:bit, which is composed of Super:bit expansion board, building block servo, Building block motor, battery, and 358 building block parts.

We combine building blocks with electronic devices to bring your building blocks to life, and they can also play music and realize colorful lights. On the one hand, it allows children to learn to program. On the other hand, it can also cultivate children's practical ability and stimulate creativity by assembling building blocks.

Features

• Compatible with both micro:bit V1.X and V2.
• The building:bit kit is designed based on BBC micro:bit, equipped with Super:bit professional expansion board.
  • The most popular microcontrollers for children are suitable for STEAM education.
  • Super:bit expansion board specially designed for micro:bit can perfectly integrate with building blocks, build any shape, and drive building block servo, motor, RGB lights and other devices.
• 16 kinds of building block models full-color printing project instruction manual
  • The building block parts of this kit are dominated by blue and white, the whole is full of science and technology, which can be assembled into N models.
  • The manual includes assembly steps of 16 kinds of models and basic instruction content for programming.
• MakeCode programming Python programming, suitable for users of different ages.
  • MakeCode programming: It can effectively reduce the learning threshold and improve children's interest in learning by dragging and splicing colorful building blocks
  • Python programming: A string of character commands control the building blocks, writing a wonderful chapter belonging to the Makers and building block enthusiasts.
• Support App/game handle remote control
  • When using different equipment to interact with the building blocks, the user can experience the fun brought by technology.
• Compatible with Lego building block, various gameplays
  • 16 kinds of models with up to 80 gameplays, such as spider walking, helicopter propeller rotation, car wriggling, cannonball shooting, etc.
  • Users can also expand through more Lego bricks and build more interesting shapes.
• Programming language: MakeCode graphical programming / Python programming

Specifications

• Remote control method: APP/micro:bit gamepad
• Main material: ABS
• Package Weight: about 1400g
• Packing box size: 288 * 213 * 68mm
• Battery type: Rechargeable lithium battery
• Lifetime: 120 minutes
• Battery energy: 3.7V / 1200mAh
• Working temperature: 4 ~ 40 ℃
• Onboard function: RGB lights, buzzer, etc.
• Number of building blocks: 358 high-precision building blocks
• Motor / Servo: 2 motors, 1 servo

What's in the box?

1 x 16 in 1 Building:bit kit

Resources

• Yahboom Building:bit superkit tutorial
• Superbit hardware interface manual, pdf file
• APP(Android) download
• Bluetooth communication protocol, pdf file
• Assembly Instructions, zipped file, extract to get jpeg files
• Makecode offline software

You can change the communication way via the jumper cap on the shield. If all the three jumpers are connected to APC, the shield will realize the XBEE Bluetooth communication. If all jumpers are connected to 485, realize the RS485 communication function.

Onboard also comes with a reset button, a D13 indicator, and some common communication pins of 2.54mm pin pitch, such as serial port, IIC, and SPI communication pins.

Besides, it also has two 2pin terminal blocks. One is VIN GND terminal block, used to supply the external power for the UNO R3 control board, with an input voltage of DC 7-12V. The other is the Servo_PWR terminal block, used for VCC voltage input/output. If not connecting the external voltage, supply 5V for the shield; if connecting the external voltage, VCC voltage is actually the external input voltage.

• Compatible with Arduino UNO R3.
• Comes with 14 digital input/output pins.
• Comes with 6 analog IO pins
• Onboard comes with a digital port power terminal block
• Comes with an external power input terminal block and a input contact pin ( power on the control board with DC 7-12V)
• Comes with an RS485 interface.
• Comes with a reset button
• Comes with a D13 indicator
• Comes with a XBEE Bluetooth interface
• Can connect three jumper caps (APC and 485) to switch the XBEE Bluetooth communication or RS485 communication.
• Comes with I2C, serial port and SPI communication pins
• Onboard comes with a DC 3.3V output pin
• Dimensions: 58.5mm x 57.5mm x 20mm
• Weight: 26.2g

Features and Spec

• Normally Open (NO) type
• Contact rating :125VAC 3A
• Switch type: Push and lock
• Weight: 10g
• Material: Plastic (body and button)
• Button color: Red
• Pitch : 3mm
• Thread diameter: 12mm
• Button diameter: 9mm
• Height: 25mm (body height excluding terminal)

The Grove Base Hat for Raspberry Pi provides a Digital/Analog/I2C/PWM/UART port to meet all your needs. With the help of the build-in MCU, a 12-bit  8 channel ADC is also available for Raspberry Pi. Currently, more than 60 groves have supported the Grove Base Hat for Raspberry Pi.

Compared with Grove Pi , the Grove Base Hat for Raspberry Pi does not use the ATMEGA chip for data conversion, so it runs faster. We provide the Raspberry Pi driver for Grove Base Hat for Raspberry Pi. What's more, Grove Base Hat for Raspberry Pi is much more cost-effective. In other words, we lowered the threshold for using the grove series on the Raspberry Pi. We hope you like it, enjoy :D

• GPIO:
  The same pinout as the raspberry pi.
   
• PWM(pulse-width modulation):
  The Grove PWM Port connects to GPIO/BCM pin12(PWM0) and GPIO/BCM pin13(PWM1), which is the hardware PWM pin of Raspberry Pi, in addition, you can use all the GPIO pins as the soft PWM pin.
   
• UART: 
  The Grove UART port connects to the GPIO14(UART0 TX) and GPIO15(UART0 RX). UART is commonly used on the Pi as a convenient way to control it over the GPIO or access the kernel boot messages from the serial console (enabled by default).It can also be used as a way to interface an Arduino, bootload ATmega, ESP8266, etc with your Pi.
   
• Digital: 
  There are 6 digital Grove sockets in this board, normally the yellow wire(which connect to the top pin of the 4 pins Grove socket as) of Grove cable is the signal wire, so we name the digital Grove port D5/D16/D18/D22/D24/D26.
   
• Analog: 
  As we know, there is no ADC in the Raspberry Pi, so it can not work with analog sensors directly. Now with the help of the build-in MCU STM32, the Grove base HAT can work as an external 12-bit ADC, which means you can use the analog sensor with your Raspberry Pi. Even more pleasing is that not one but four analog Grove sockets are available.
  The analog sensor inputs the analog voltage into the 12-bit ADC. After the ADC converts the analog data to digital data, it input the digital data to the Raspberry Pi through the I2C interface.
   
• I2C: 
  There are three I2C ports available in this board, they all connect to the I2C pin of the raspberry directly. You can consider this part as an I2C hub. Most of Seeed's new grove modules have an I2C interface, you may find those I2C three ports are extremely useful.
   
• SWD: We use the SWD port to burn the firmware to this hat. In addition, you can see 3 GPIO pins in this section, i.e., pin 9/pin 10/pin 11. Those three pins do not use by any Grove port, you are free to use them without worrying about pin conflicts.

Note:

1. All the silkscreen layer pin number beside the Grove port is the BCM pin number. The difference between BCM pins and the physical pins please refer to here.
2. Compared with hardware PWM, the software PWM isn't so accurate and will have trouble at high frequencies.
3. The GPIO/BCM pin18 is also marked as PWM0. The GPIO/BCM 12 and the GPIO/BCM 18 share the same PWM channel, so they can't be set to different rates.
4. The audio jack output also uses PWM 0 and PWM 1, so you can't have an audio output on that socket and use the PWMs at the same time.

• Support Raspberry Pi 2B, 3B, 3B and 4
• build-in MCU
• 12-bit ADC
• Multi-type Grove port
• Operating Voltage: 3.3V
• MCU: STM32/MM32
• ADC: 12-bit 8 channel
• Grove Ports:
  • 6 x Digital
  • 4 x Analog
  • 3 x I2C
  • 1 x PWM
  • 1x UART
• Raspberry pi communication bus: I2C
• I2C Address: 0x04/0x08

• Getting started with HAT-Grove Base for Raspberry Pi, Seeed's wiki page
• Grove Base Hat for Raspberry Pi Eagle Files, zipped file
• Seeed Grove.py Library, zipped file
• STM32F030F4P6TR-Firmware, zipped file
• MM32F031F6P6-Firmware, zipped file
• STM32 Datasheet, pdf file
• MM32F031F6P6_Datasheet.pdf, pdf file
• SCH & PCB drawing, zipped file
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