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USB Detector Current Voltage 3V-9V Tester Dual USB Dual display (USB Docter Dual)

Use the USB Charger Doctor to measure the working voltage and current output for any USB port and project. This plastic dongle plugs between a USB device, and passes the data lines through. There's a 0.05 ohm resistor in line with the power pin that is used to measure current draw. The Doctor's digital display instantly reads the numbers out for testing devices such as chargers, cables, and cell phones.

You can use this device from 3.5-7VDC input voltage (although most USB devices tend to hover around 4.75 to 5.25) and up to 3A of current. It displays both voltage and current readouts. It's a very handy tool for testing USB devices, checking load levels and debugging battery chargers and boost converters.

R199.90  Inc VAT
8-Channel 3.3V to 5V Voltage Converter Module for Raspberry Pi - Blue (8ch blue convert logic)
Raspberry Pi and jumper cables are not included.


- Mutual conversion between 3V and 5V, It's convenient for PI connected to external 5V sensors or modules

- Supports total of 8 channels

- Range of voltage converted: 1.8V~6VDC

How to Use:
In the case of translating between 3.3V and 5V system:
VCCA connects to 3.3V power supply
VCCB connects to 5V power supply
GND connects to power negative pole respectively, the two power supply should be common-grounded with each other
When Ax has 3.3V input, Bx will get 5V output
When Bx has 5V input, Ax will get 3.3V output
NO direction control required
R39.90  Inc VAT
Switched Battery Box 2xAA (3V) (3V AA switch battery box)

This battery box is designed for use as a nice switchable, portable power pack, and fits any two alkaline or rechargeable AA batteries in series. The body is moulded in black ABS Resin and has a slide on detachable lid which can be locked for extra security through use of a small provided screw. It even includes a very useful miniature on-off slide switch which is very handy for wiring to projects that don't have a switch! Connection is via two flexible stranded red (positive) & black (negative) 26AWG wire leads, which are approximately 150mm in length.

The two batteries are held in series, for a nominal output of 3V DC (AA Batteries @ 1.5V each).
  • Battery Cell Size AA
  • Number of Cells 2
  • Body Material ABS Resin
  • Height 19.0 mm, Length 68.0 mm, Width 33.0 mm
  • Terminal Type Wire Lead
  • Type Battery Box
  • Weight 0.01900 kg
R34.90  Inc VAT
3V-7V DIY Light Shock Absorbed Tank Robot Chassis With 130 Motors (tank chassis shocks)

1. Only 166g in weight
2. Good damping effect, you can press down to 0.7cm
3. With general motors 130, support 3-7V voltage
4. With the DC charging port at the bottom of the tail


Size: wide 9.7cm* long 18.5cm* high 5cm
Voltage: 3-7V
Motors: 130
Weight: 166g


Package Included:

1x Tank Robot Chassis

Read the Docs
R419.90  Inc VAT
DC 4x8mm DC1.5-3V Micro Coreless Vibration Motor (vibration motor)
    10pcs 4x8mm DC1.5-3V Micro Coreless Motor Vibration Motor

    Motor Diameter: 4mm
    Motor Length: 8mm
    Eccentric Wheel Size: 4.4x4.4mm
    Voltage: DC1.5-3V
    Current: 0.15-0.23A

    Stable and reliable performance.
    Easy disassembly type.
    Easy to clean and maintain.
    Excellent quality and long service life.
    Has been widely applied in RC car, RC aircraft.
    Package Includes:
    1 x  Vibration Motor
    R18.90  Inc VAT
    3.3V ADS1115 ADC Module for Raspberry Pi 3/2 / B + I2C RPI ADS1115 ADC Analog to Digital Converter (ADS1115 ADC Module for RPi)
    RPi-ADS1115-ADCModule is a precision analog-to-digital converterADC),one of themADS1115Is able to offer16Bit sampling accuracy of the chip, using a very small sizeMSOP - 10Package.

    Data passedI2CCompatible serial interface for transmission, owned4roadI2CAddress can be selected, work power only need3.3VYou can. Its main function is that it can be used to detect analog signals and convert them to digital signals.

    You can put analog signals on joysticks or other analog sensors such asNTC, Temperature, dust sensors and other equipment through thisRPi-ADS1115-ADCModule access raspberry faction, through the raspberry dispatch device to collect the analog signal.




    65.0 mm 30.0 mm 18.0 mm

    power supply


    Analog input voltage


    Programmable data rate



    stand by


    Sampling accuracy



    Select the address by pin

    Number of channels

    4Single-ended or2Differential input

    Programmable Comparator(PGA)

    2/3 ~ 16


    stand by

    R149.90  Inc VAT
    GY-302 BH1750 BH1750FVI light intensity illumination module 3V-5V (light intensity sensor board)
    Product description:

    Type: GY - 302
    Size: 13.9 mm X 18.5 mm
    The original BH1750FVI ROHM chip
    Power supply: 3-5 V
    Data range: 0-65535
    Sensor built-in and bitad converter
    Direct digital output, bypassing the complicated calculation, omit calibration
    Do not distinguish between ambient light
    Close to the visual sensitivity of spectral characteristics

    For a wide range of brightness for 1 lux high precision measurement

    Package Includes:

    1 x GY-302 Module
    R39.90  Inc VAT
    3V 650NM 5mW Red Dot Laser Head 6mm with Leads (Laser Diode)

    Material: Copper plastic.
    Laser shape: dot.
    Outer diameter: 6 mm.
    Wavelength: 650nm.
    Working voltage: 3V.
    Total length: 9cm/3.54inch
    Wavelength: 650nm
    Operating Current: less than 20 mA
    Output Power: 5mW
    Housing material: High quality Copper
    Laser Shape: Dot
    Outside diameter: 6mm
    Dimensions: 6.5 x 18mm
    Working temperature: -10 degree~£?40 degree
    Lens and housing: Plastic
    Wire connection: Red wire connect to Positive, Blue wire connect to Negative

    What's in the box?

    1 x 3V 650nm 5mW Red Dot Diode Laser Heads
    R14.90  Inc VAT
    Slider for micro:bit (Slider for micro:bit)
    Slider for micro:bit


    The MonkMakes Slider for micro:bit allows you to interact with your micro:bit by sliding a control left and right.

    The board uses a 10kΩ linear variable resistor (pot) to output a voltage between 0 and 3V that can be measured in your micro:bit programs using one of the micro:bit connections as an analog input.

    The kit includes the Slider for micro:bit itself plus a set of 5 alligator clip leads. 


    What's in the box ?

    1 x 3v Slider 
    5 x Alligator clip leads 

    (* micro:bit not included) 

    Resources :

     - Instructions (PDF)
     - Data Sheet (PDF)
     - Lesson Plans (Google file share)

    (* micro:bit and not included) 

    R169.90  Inc VAT
    RGB for micro:bit (RGB for micro:bit)
    RGB LED for micro:bit


    The MonkMakes RGB LED for micro:bit can be used to make any Colour by controlling the red green and blue levels. Handily mounted on a PCB it connects to the micro:bit using alligator clips.

    Connect it up with alligator clips and then use the three outputs of your micro:bit to control the red, green and blue channels to mix up any color of light you want.


    • Easy to connect
    • Powered directly from micro:bit pins
    • Useful for teaching color mixing.


    Each LED channel has a 1kΩ series resistor to limit the current.

    What's in the box ?

    1 x RGB LED For micro:bit 

    (*micro:bit not included )

    R59.90  Inc VAT
    Power for micro:bit (Power for micro:bit)

    The MonkMakes Power for micro:bit opens up lots of ways of powering your micro:bit.

    The board has a standard DC barrel jack that accepts between 4.5 and 12V and provides a regulated 3V output to the micro:bit via its JST battery connector.


    What's in the box ?

    1 x power for micro bit board (*Batteries and micro:bit not included)


    Instructions (PDF)
    Datasheet (PDF)

    R149.90  Inc VAT
    Monkmakes SSR (Monkmakes SSR)

    The MonkMakes SSR is a low voltage solid state relay (no moving parts). This makes it super-easy to control loads of up to 2A at 16V from an Arduino, Raspberry Pi or other 3 or 5V microcontroller or single board computer.

    This modern take on the electro-mechanical relay can even be used for low frequency PWM to control the power to its load.


    This relay can be used to switch low voltage devices such as light bulbs, a motor, a small heating element or even a string of 12V LED lighting. The voltage needs to be kept under 16V, but the relay will automatically protect itself against too much current.

    • Solid-sate relay up to 2 Amp Peak 1A continuous AC/DC
    • Active LED indicator
    • Resettable ‘polyfuse’ to protect against over-current
    • Great for Arduino and Raspberry Pi
    • Suitable for low frequency PWM

    What's in the box ?

    1 x Monkmakes SSR board



    (* ONLY SSR -Solid State Relay - Included - all other products are for reference use only*)
    R179.90  Inc VAT
    CR2032 Button Battery Holder Case With On/Off Switch 3V single (CR2032 single enclosure)

    Button/Coin compact design enclosure with On and Off Switch.
    Perfect for soldering, perfect for robotic ,electronic, and restoration projects.
    It can hold one CR2032 coin batteries.


    Output: 3V
    Color: Black
    Model: For CR2032 x 1

    What's in the box?

    1 x CR2032 Battery enclosure (Battery not included)
    R15.90  Inc VAT
    DC 3V Mini Motor 130 (3V dc motor mini)
    Motor size: 38x20x15mm
    Shaft diameter: 2mm 
    Axial length: 9mm 
    Voltage: 3-6V
    Package Includes:
    1 x DC 3V Mini Motor

    Getting started with Raspberry Pi gpiozero Motors
    Controlling DC Motors Using Python With a Raspberry Pi

    R17.90  Inc VAT
    RPIZ_CT3V1 3 current and 1 Volt 30A AC adapter for Raspberry Pi zero (lec zero 3 current 1 volt)

    The RPIZ_CT3T1 is the same unit as the RPICT3V1 in the Raspberry pi Zero format.

    Refer to the RPICT3V1 for full documentation.

    Use with sct-013-000 split core current sensor and 230VAC to 9VAC power adapter

    Please note: Raspberry Pi Zero and sensors are not included

    R649.90  Inc VAT
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