Special Offers

• The main chip: LM393, MQ-3 gas sensor
  
• Operating voltage: DC3-5V
  
• Response time: ≤10s (70% Response)
  
• Recovery time: ≤30s (70% Response)
  
• Heating resistance: 31Ω±3Ω
  
• Heating Current: ≤180mA
  
• Heating Voltage: 5V±0.2V
  
• Heating Power: ≤900mW
  
• Detect Voltage: ≤15V
  
• Ambient Temperature: -10℃ to 65℃,
  
• Humidity: ≤95%RH
  
• Storage conditions: Temperature:-20℃-70℃,Humidity:≤ 70%RH

This is the perfect cable choice for those that want to output music or general sound for the BBC micro:bit, to either headphones or speakers.

At one end of the cable are the black and red crocodile clips, which connect to the microbits GND and Pin 0 respectively. At the other end of the cable is a 3.5mm TRS (tip, ring sleeve) stereo jack.

The 3.5mm TRS stereo jack means you can either connect your headphones directly to your BBC micro:bit or if you would rather use a speaker, you can use one of our MP3 mono amplifier kits to drive the speaker.

Please Note:

Although the BBC micro:bit can supply enough current to drive a pair of headphones, you will need an amplifier if you wish to drive an audio speaker. A MP3 mono amplifier kit is an ideal choice as it offers both the amplifier and speaker.

Please be aware however this lead does not work with true Mono leads and is designed to work with Stereo Leads. 
 

Features

• Plug headphones directly onto the 3.5mm TRS stereo jack.
• Crocodile clips for direct connection to the BBC micro:bit.

Dimensions

• Length: 400mm.
• Clips: 28mm.

What's in the box?

1 x BBC micro:bit Audio Cable.
 

Commonly used in machine parts, die fixture, and clamping, Allen head screws enable you to drive in and secure this type of fastener where there is not sufficient space to use a traditional socket or wrench.

Great for building your own CNC project or 3D printer

Specifications

• Black
• M5 x 16mm
• Steel Alloy
• pack of 10

What's in the box?

10 x Screws

• Great for electronic projects and kits.
  
• Perfect use for home, office and industry electrical equipment and electrical appliances
• Size: 10mm
• Voltage: 1.8V ~ 2.2V for Red & Yellow, 3.0V ~ 3.4V for Blue, Green & White
• Current: 20 mA
• Luminous Intensity: 5000 MCD
• Colour: RED, BLUE, YELLOW, GREEN, WHITE
• Lens Color : Diffused
  
  

• Microcontroller Atmel ATmega328
• Operating Voltage (logic level): 5V
• Input Voltage (recommended): 7V ~ 12V
• Input Voltage (limits): 6V ~ 20 V
• Digital I/O Pins: 14 (of which 6 provide PWM output)
• Analog Input Pins: 8
• DC Current per I/O Pin: 40mA
• Flash Memory: 32KB (ATmega328) (of which 2 KB used by bootloader)
• SRAM: 2KB (ATmega328)
• EEPROM: 1KB (ATmega328)
• Clock Speed: 16MHz
  
  

This pre-built Edge Connector Breakout Board for the micro:bit gives access to all the important pins on the bottom edge of the micro:bit.

Looking to do more with your micro:bit? Unlock its potential with this pre-built version of our Edge Connector Breakout Board! This breakout board has been designed to offer an easy way to connect additional circuits and hardware to the pins on the edge of the micro:bit. It provides access to all of the micro:bit processor pins allowing a lot of extra functionality to be added. The datasheet (below) includes a helpful diagram explaining the function of every pin on the micro:bit.

This Edge Connector Breakout Board for the micro:bit gives access to all of the important pins on the bottom edge of the micro:bit. 21 pins are broken out in total; providing additional I/O lines, direct access to buttons A and B, the LED matrix outputs and the I2C bus. Please refer to the datasheet below for more details.

The micro:bit pins are broken out to a row of pin headers. These provide an easy way of connecting circuits using jumper wires. The SCL and SDA pins are separated at the edge of the board (solder pads) providing easy identification. The PCB includes a prototyping area with 3V, 0V and unconnected rows that can be soldered to. This allows the easy connection of switches, sensors and any pull-up or pull-down resistors etc. as required.

To use the breakout board the micro:bit should be inserted firmly into the connector as shown below:

Note:

• This product is supplied with straight double row PCB pin headers already soldered to the breakout board

Features:

• Features a dedicated pin strip for quick and easy prototyping
• Breaks out 21 pins from the edge of the micro:bit
• Dedicated prototyping area with 3V and 0V rows
• Labelled pins and clear, straightforward documentation

Contents:

• 1 x Edge Connector Breakout Board for the micro:bit, pre-built

Dimensions:

• Length: 60mm
• Width: 40mm
• Height: 11.8mm

Requires:

• 1 x micro:bit

Resources:

• Click here to download the datasheet.

Sonoff Dual is a WiFi based 2 gang switch that can connect and independently control two connected appliances or lights. This simply means 1 Sonoff Dual control switch equals to 2 Sonoff basic switches! Sonoff Dual 2 gang light switch inherits Sonoff Basic switch’s advantages such as easy installation and operation, quick WiFi access, remote control through APP EweLink.

In the application eWeLink, available on both iOS and Android, users can independently turn on/off each of the two connected devices. But the button on Sonoff Dual 2 gang WiFi light switch is not an ON/OFF toggle switch, it is only a WiFi pairing button. Users can set single/repeat/countdown timing schedules to turn on/off at a specified time, and also share with others so that they can control together.

Works With Amazon Alexa

You can ask Alexa to turn on/off Sonoff Dual.

Standard voice control commands phrases for Sonoff Dual (if you just say the device name, Alexa will turn on/off all the 2 gangs immediately):

Alexa, turn on {deviceName}
Alexa, turn off {deviceName}

Alexa, turn on {deviceName} {gangName}
Alexa, turn off {deviceName} {gangName}

Explanation: if the device name of your Sonoff Dual is "My Switch", the gang name is "Gang 1", then you can control with "Alexa, turn on My Switch Gang 1".

For detailed tutorial, please click here.

Check out the amazing features of this product below:

Features

• Remote turn on/off through the APP EWeLink
• Independently control 2 devices in APP EWeLink
• Supports tracking device status on EWeLink
• Supports setting countdown, single and repeat timing tasks
• Works with Amazon Echo, Echo Dot, Amazon Tap
• Works with Google Home, Google Nest
• Works with IFTTT

Specifications

• Power Supply: 90-250V AC
• Max Current: 16A(2 gang),10A(1 gang)
• Max Power:  3500W(2 gang) / 2200W(1 gang)
• Product Dimensions: 114*52*32mm
• Color: White
•  Frequency: 802.11 b/g/n 
• Security Mechanism: WPA-PSK/WPA2-PSK
• Humidity: 5%-90%RH, Non-condensing
• Enclosure Material: Fire-retardant ABS V0
• Operating Temperature: 0ºC-40ºC(32°F-104°F)
• Gang: 2
• Certification: CE, RoHS, FCC

Package

1 x Sonoff Dual

• 5.5mm x 2.1mm barrel
• 26cm cable

Voice control your lights. All Sonoff Wi-Fi Light switches can be controlled remotely using your phone. Works with Amazon Alexa and Google Assistant which lets you turn on or off your lights with voice commands. Features sensitive touch buttons that are simple, stylish and modern on any wall surface. Reduce monthly electricity bills by turning lights off using scheduling for auto-off. Setting timers for devices and switches will automate your home. Simply set scenes and your home will perform the routine task, automatically saving you time and money. Turn off groups of devices with a single tap on your phone or by saying “Ok Google lights off”

Sonoff Smart Wi-Fi Light Switch is compatible with IFTTT function, i.e. The switches can communicate with all compatible devices and services, to trigger them on or off. Easy to follow steps to access your smart home. The share control provides you a quick way to allow you and your family to control devices together. You’re not sure whether the lights where on or off after leaving home, just take your phone out and open the app to check the real time device status.

*Please note that light switches do not have built-in dimming functionality*

Requires a qualified electrician to install.

**Switches Require a Neutral Wire and 2.4Ghz Wi-Fi and Internet**

Features

• Application control
• Timing schedules
• Voice control
• Share control
• RF control
• Touch control

What's in the box?

1 x SONOFF T2 Smart Switch

Voice control your lights. Sonoff T2US3C Light switch can be controlled remotely using your phone. Works with Amazon Alexa and Google Assistant which lets you turn on or off your lights with voice commands. Features sensitive touch buttons that are simple, stylish and modern on any wall surface. Reduce monthly electricity bills by turning lights off using scheduling for auto-off. Setting timers for devices and switches will automate your home. Simply set scenes and your home will perform the routine task, automatically saving you time and money. Turn off groups of devices with a single tap on your phone or by saying “Ok Google lights off”

Sonoff  T2US3C Light Switch is compatible with IFTTT function, i.e. The switches can communicate with all compatible devices and services, to trigger them on or off. Easy to follow steps to access your smart home. The share control provides you a quick way to allow you and your family to control devices together. You’re not sure whether the lights where on or off after leaving home, just take your phone out and open the app to check the real time device status.

*Please note that light switches do not have built-in dimming functionality*

Requires a qualified electrician to install.

**Switches Require a Neutral Wire and 2.4Ghz WiFi and Internet**

What's in the box?

1 x SONOFF T2 Smart Switch

Product Name : Fan Metal Finger Guard
Material : Metal
Fit for Fan Size : 80mm x 80mm / 3.15" x 3.15"(L*W);
Total Size : 90mm x 90mm
Colour : Silver Tone
Net Weight : 12g

We use these as speaker covers on the arcades we build.

What's in the box?

1 x grill

Description:

Using the analog I/O - module RevPi AIO your RevPi base module can be expanded by 4 analog inputs, 2 analog outputs and 2 RTD input channels. This expansion module is connected to your base module by the means of the overhead PiBridge plug. Inputs, RTD inputs and outputs are galvanically isolated to each other. Differential inputs eliminate ground loops.

Analog input range/options: +/- 10 V, 0 – 10 V, 0 – 5 V, +/- 5 V, 0 – 20 mA, 0 – 24 mA, 4 – 20 mA, +/- 25 mA

Analog outputs range/options: 0 – 5 V, 0 – 10 V, +/- 5 V, +/- 10 V, 0 – 5,5 V, 0 – 11 V, +/- 5,5 V, +/- 11 V, 4 – 20 mA, 0 – 20 mA, 0 – 24 mA

The 2 RTD inputs enable temperatures to be measured with high precision from -165°C to +600°C in steps of 0.5°C using common RTDs sensors like Pt100/Pt1000 probes. The probes can be connected directly to the module with 2, 3 or 4 cables.

Just like the digital IO modules, RevPi AIO is protected against disturbances according to EN61131-2 and can be operated between -40 and +50°C ambient temperature and up to 80% relative humidity. It is also protected against static discharges, burst and surge impulses in accordance with EN61131-2 requirements.

The required PiPridge Plug (Item No.: 100204) and a set of 14-pole PCB female connectors (Item No.: 200030) are already included in the scope of delivery of this expansion module.

Compliance
EN61131-2
Housing dimensions (H x W x D)
96 x 22.5 x 110.5 mm
Housing type
DIN rail housing (for DIN rail version EN 50022)
Housing material
Polycarbonate
Weight
approx. 115 g
IP Code
IP20
Power supply
12 - 24 V (-15%/+20%)
Current consumption
max. 200 mA at 24V (full load)
max. 400 mA at 12V (full load)
max. 500 mA during start up
Operating temperature
-30…+55 °C
Storage temperature
-40…+85 °C
Humidity (at 40 °C)
93 % (non-condensing)
Voltage measuring range
±10 V | ±5 V | 0…10 V | 0…5 V
Current measuring range
0…20 mA | 0…24 mA | 4…20 mA | ±25 mA
Temperature measuring range
-200…+850 °C
Voltage output range
±10 V | ±11 V | ±5 V | ±5.5 V | 0…10 V | 0…11 V |0…5 V | 0…5.5 V
Current output range
0…20 mA | 0…24 mA | 4…20 mA
Number of input channels
6
for voltage max 4
for current max 4
for RTD (Pt100/Pt1000) 2
Number of output channels
2
for voltage max 2
for current max 2
Galvanic isolation
Input to Input No
Input to Output Yes
Output to Output No
System bus to inputs/outputs Yes
Input type
Voltage/current - differential
RTD 2-, 3-, 4-wire
Output type
single ended, common ground, short-circuit proof
ADC type
24 bit ΔΣ
DAC type
16 bit
Input resolution in process image
Voltage 1 mV (16 bit)
Current 1 μA (16 bit)
Temperature 0.1 K (16 bit)
Output resolution in process image
Voltage 1 mV (16 bit)
Current 1 μA (16 bit)
Max. overall input error (at 25 °C ambient temperature)
Voltage (for all ranges) ±10 mV (±5 mV @ 0…5 V range)
Current (for all ranges) ±20 μA (±24 μA @ 0…24 μA range)
Temperature (for complete range) ±0.5 K
Max. overall input error (for -30…+55 °C ambient temperature)
Voltage (for all ranges) ±10 mV
Current (for all ranges) ±72 μA
Temperature (for complete range) ±1.5 K
Max. overall output error (at 25 °C ambient temperature)
Voltage (for all ranges) ±15 mV
Current (for all ranges) ±20 μA
Max. overall output error (for -30…+55 °C ambient temperature)
Voltage (for all ranges) ±15 mV
Current (for all ranges) ±72 μA
Input conversion time (data rate in process image)
8…1000 ms (adjustable)
Output data rate
1 PiBridge cycle
Output slew rate
Adjustable digital slew rate control - 1 [email protected] kHz up to 128 LSB@258 kHz
Input impedance
Voltage >900 kΩ
Current <250 Ω
Output impedance
Voltage <16 Ω
Max. capacitive load 5 nF @ 1 kΩ
Max. load resistance for current output
600 Ω
Min. load resistance for voltage output
1 kΩ
Further features
All inputs and outputs are linear scalable
Overtemperature monitoring
Overcurrent monitoring
Range monitoring
Optical indicator
3 status LEDs (bi-color)

Technical data also available in pdf format: https://revolution.kunbus.de/wp-content/uploads/manuell/datenblatt/Datasheet_RevPi_AIO.pdf

Tutorials available at https://revolution.kunbus.com/tutorials/

13.3inch IPS screen, 1920x1080 high resolution. Toughened class cover. Supports Raspberry Pi and can also be used as a computer monitor.

Device and System Support

Raspberry Pi

Supports Raspberry Pi OS, 10-point touch, driver free
Supports Ubuntu / Kali / WIN10 IoT, single point touch, driver free
Supports Retropie, driver free
Supports all versions of Raspberry Pi

Jetson Nano

Supports Ubuntu, single point touch, driver free

PC

Supports Windows 11 / 10 / 8.1 / 8 / 7, 10-point touch, driver free

Game Console

Xbox360, PS4, Switch..(Display and sound only)

Features

• 13.3inch IPS screen,1920x1080 high resolution
• Toughened glass capacitive touch panel, 6H hardness
• Supports popular mini PCs such as Raspberry Pi, BB Black, as well as general desktop computers
  • When works with Raspberry Pi, supports Raspbian, Ubuntu, WIN10 IOT, single touch, and driver free
  • When work as a computer monitor, supports Windows 10/8.1/8/7, ten-points touch, and driver free
• Multi languages OSD menu, for power management, brightness/contrast adjustment, etc.
• 3.5mm audio jack, supports HDMI audio output
• Embedded ferrite Hi-Fi speaker
• Also supports VGA input (specific cable is required and should be purchased separately)
• 75x75mm spacing mounting holes (M4 screw hole) for general wall mount
• Comes with 75° tilt angle stand

Audio Features

Appearance and Dimensions

What's in the box?

1 x 13.3inch Capacitive Touch HDMI LCD

Resources

Wiki : www.waveshare.com/wiki/13.3inch_HDMI_LCD_(H)_(with_case)

• Name: Arduino MEGA2560 R3 DIY acrylic case
• Dimensions: 118 x 72 x 18mm
• Weight: 72g
• Material: A level acrylic
• For Arduino MEGA2560 R3 Development Board only

Laser Safety Glasses 200-450nm Eye Protection Green Lens. Not suitable for high power laser, only suitable for low power laser. Laser light is harmful to human eyes, please choose these goggles to protect your eyes!

• Brand: Eleksmaker
• Material: Plastic
• Item: Laser Protective Glasses
• Applicable Model: 200-450nm Wavelength
• Optical Density (OD): OD4
• Blue Laser Visible Light Transmission: <50%
• Red Laser Visible Light Transmission: >60%

• Durable and comfortable to wear.
• Fit for 200-450nm blue-violet lasers.
• Ideal for use in most laser applications.

• 3D printer T8 400mm Stainless Steel Lead Screw Screw nut Mounted ball bearing Shaft coupling Motor.
• Screw mainly use for Stepping motor driving guide rail,machine tool, and other equipment.
• Screw without processing, direct connected to bearing.
• T shape design, make of high quality stainless steel material.
• Easy to install and convenient to use.
• Fine producing and practical.
• Suitable for Industrial automation equipment, stepper motor rails;
• Fit for 3D printer; engraving machine; XYZ module; slider; lifts ect.

This is a split-core current transformer which is used as an AC current sensor. It is popularly used for current measurement, monitoring and protection for AC motors, lighting equipment, air compressors, home automation etc.

Features

• Opening size: 13 x 13mm
• Rated input current (RMS): 10% - 120% of that is 1A~100A
• Output voltage(RMS): linear output. when the input current is 100A, the output voltage is 1V
• Linearity: ± 3%
• Output connectors: 3.5mm standard three-pin plug
• Lead length: 1m

What's in the box?

1 x Split-Core Current sensor