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Please note: Pic is for illustration purposes only
R4.90  Inc VAT
RJ45 RJ11 2-in-1 Network and Phone Cable Tester (RJ45 tester)
Description:


The cable tester can be used for RJ45 networks, RJ11 and telephone cables. It can test the cables with reliable accuracy. This is a useful tool for technicians in installation and maintenance.


Specifications:

- Tests both RJ45 (max 8-pin Network) and RJ11 (max 6-pin phone)
- Powered by a single 9V cell battery(not included)
- Carrying case not included

What's in the box?:

1 x RJ45 RJ11 Cable Tester
R169.90  Inc VAT
Micro Tactile Switch 6x6 (Pack of 5) (tact switch 6x6 (5 pack))
Description:

Tactile Switches or tact switches are an on/off electronic switch that is only on when there is some pressure put on it or when the button is pressed. As soon as the tactile switch button is released and the pressure has been took off, the circuit is then broken.

Specifications:
  • Size: (Approx.)6x6x3.3mm
  • Life: 100000 times
  • Quantity: 50pcs
  • Current: 50mA
  • Voltage: 12V


What's in the box?:

5 x Tactile Switches

Resources:

Python library
Introduction to Buttons and Switches
Types of buttons and switches
R8.90  Inc VAT
USB Detector Current Voltage 3V-9V Tester Dual USB Dual display (USB Docter Dual)
Description:

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.

Specifications:

Voltage range: 3.3V-9V
Current range: 0-3A
Voltage display: red
Current display: blue
Out put : 2 USB
Size: 52mm x 34mm x12mm
Weight: 16g
Shell color: Dark black

What's in the box?:

1 x Voltage Tester Dual USB

R179.90  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.
Description:


A DC-to-DC converter is an electronic circuit or electromechanical device that converts a source of direct current (DC) from one voltage level to another. It is a type of electric power converter. 

Ideal for reading high 5V sensors on your SBC or Microcontrollers, or sending signals to 5V input devices

Specifications:

- 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

What's in the box?:

 1 x Voltage Converter Module
R47.90  Inc VAT
AM2302 DHT22 Temperature And Humidity Sensor Module (DHT22 temp/humid)

Description:

AM2302 Humicap digital temperature and humidity module is a digital output signal containing a calibrated temperature and humidity combined sensor. It uses dedicated digital module capture technology and temperature and humidity sensor technology to ensure that products has high reliability and excellent long-term stability. Sensor includes a capacitive humidity sensing element and a high-precision temperature measurement device, and with a high-performance 8-bit microcontroller connected. Therefore, the product has excellent quality, fast response, anti-interference ability, low cost and other advantages. Ultra-small size, low power consumption, signal transmission distance up to 20 meters. Making it the best choice for all kinds of applications and even the most demanding applications.

Applications:

HVAC (Heating Ventilation Air Conditioning), dehumidifiers, testing and inspection equipment, consumer goods, automotive, automation, data loggers, home appliances, humidity regulator, medical,weather stations, and other related humidity detection control.

Specification:

Dimensions: 40 x 23mm
Weight: 4g
Voltage: 5V
Port: digital two-way single bus
Temperature range: -40 to 80 °C ± 0.5 °C
Humidity: 20 to 90% RH ± 2% RH
Platform: Arduino, SBC

Package includes:

1 x Sensor Module


How to setup a DHT22 with your Raspberry Pi.The resistor is already on the PCB so you can skip the breadboard part.

R125.90  Inc VAT
12V 1/2" Inlet Feed Water Solenoid Valve N/C (1/2 straight valve)
Description:

Have you ever wanted to control the flow of a liquid using your computer or microcontroller, but didn’t know how?
Well, here’s how: The 12V solenoid controlled fluid valve. Simply connect a fluid source to the fluid input then once the 12Vdc is applied the fluid will start to exit until the 12Vdc signal is removed.

If your signal is 5V , then you can use relay 5Vdc to control the 12Vdc from your microcontroller.

Specifications:

Voltage: 12V DC
Rated Power: 5W
Pressure: Max 8 Bar
Operation model: Normally closed
Port Size: 1/2''
Fluid temperature: 0-100
Usage: water and low viscosity fluids
Flow characteristics: 0.2Bar>1.5L/min 1Bar>7L/min 3Bar>12L/min 8Bar>20L/min;

What's in the box?:

1 x Water Solenoid Valve

Please note:

The actual valve size in the unit is smaller than the port size as you will find with most taps.

R249.90  Inc VAT
1N4007 Rectifier Diode 1000V 1A (5 pack) (1N4007 Diode 1A(5 pack))
Please note: Pic is for illustration purposes only

Description:

The 1N4007 is used as a general-purpose diode. It is normally constructed to be used as a rectifier in the power supply section of electronic devices to convert AC voltage to DC voltage with other filter capacitors.

Specifications:

  • 1N4007 Diode
  • rectifying
  • standard 1A 1000V
  • DO-41
What's in the box:

Pack of 5 units
 
Resources:

Intoduction
Basics, Types, Characteristics, Applications & Packages
Please note: Pic is for illustration purposes only
R4.90  Inc VAT
4V to 40V DC to DC Step Down LM2596 Voltage Regulator Converter Module (Green step down LM2596)
Description:

The LM2596 is a commonly used popular step-down switching regulator IC. The adjustable version can take in input voltage from 4.5V to 40V and convert it to variable voltage sourcing upto of 3A of continues current. Because of its high current capability is commonly used in power modules to power/control heavy loads

Specifications:

Input voltage range: 4-40 v (40 v highest voltage limit)
Output voltage range:1.25V - 37V (input voltage must 2 V above output)
Output current: 2 A continuous output
Output power: maximum 15 w
Ripple frequency: 150 KHZ
Grain wave peak: 100 mv


IN : input positive
IN - : input negative
OUT : output positive
OUT - : output negative


Voltmeter precision: ± 5 ‰
Weight: 33g
Size: 7cm x 4cm

Package includes:

LM2596 voltage regulator converter module
R99.90  Inc VAT
BMP180 Digital Barometric Pressure Sensor Board Module (Barometric sensor)
Description:

This digital barometer has some interesting applications. By measuring the absolute pressure of the environment and converting this into altitude. you will have a reliable sensor for determining the height of your robot, plane or projectile. This sensor is capable of achieving an accuracy of 1m, with noise of only 17cm in ultra-high resolution. The device will operate at only 0.3uA meaning low current draw for battery powered applications.

Specifications:


1.8V to 3.6V Supply Voltage
Low power consumption - 0.5uA at 1Hz
I2C interface
Max I2C Speed: 3.5 MHz
Very low noise - up to 0.02hPa (17cm)
Fully calibrated
Pressure Range: 300hPa to 1100hPa ( 9000m to -500m)
Weight: 1.18g
Size: 21mm x 18mm

Package includes:

1 x BMP180 Digital Barometric Pressure Sensor Board Module
1 x Male to Male 4 pin header

Resources:

Using the BMP180 with Raspberry Pi
R29.90  Inc VAT
Sound Detection Sensor LM393 Chip (sensor sound detection)

Description:

LM393 Sound Detection Sensor Module for controller detects whether the sound has exceeded a threshold value. The sound is detected via a microphone and fed into an LM393 op-amp. The sound level setpoint is set via an onboard potentiometer.
Can be used for Acoustic control light; give sound and light alarm working with Photosensitive sensor
Note: The Maximum induction distance is 0.5M

Features: 
  • Main Chip: LM393, Electret condenser microphone
  • Working Voltage: DC 4-6V
  • Signal output indication
  • Single channel signal output
  • The output effective signal is low level
  • When there is sound,output low level and the signal lights
What's in the box?:

1 x LM393 Sound Detection Sensor

Resources:

Find help with this sensor at https://www.instructables.com/id/Sound-Sensor-Raspberry-Pi/
R14.90  Inc VAT
Liquid Water level sensor Side Mounted Float Switch (liquid level side mounted)

Description:

The liquid level switch detects the rising level of liquid in a sump or tank. It can be connected to a micro controller. It can then be used to start/stop a pump which then pumps liquid in/out until the level of the liquid has been restored to the point where the pump is switched off again. The switch may be used in a pump station, a sensor, a tank alarm, or other devices.

 

Specification:

Contact Rating: 10W
Switching Voltage: 220V
Switching Current: 0.5A
Breakdown Voltage: 220VDC
Carry Current: 1.0A
Contact Resistance: 100mohm

What's in the box:

1 x Liquid Water level sensor 

Resources:

Python library
Introduction to Buttons and Switches
Types of buttons and switches

 

R39.90  Inc VAT
L7805CV TO220 5V Voltage Regulator (L7805 Volt Reg)
Description:

L7805CV is a three terminal linear voltage regulator IC with a fixed output voltage of 5V which is useful in a wide range of applications.

A voltage regulator generates a fixed output voltage of a preset magnitude that remains constant regardless of changes to its input voltage or load conditions. 

Specifications:
  • Integrated circuit
  • Voltage regulator
  • 5V
  • Non insulated

Resources:
Understanding How a Voltage Regulator Works


What's in the box:

1 x L7805CV 5V regulator
R5.90  Inc VAT
Electrolytic Radial Capacitor 1uF 50V (10 pack) (Rad Cap 1uF 50V(10))
Description:

Electrolytic Radial Capacitor 1uF 50V. Typically used for surge suppressing / transient voltages / filtering out noise line noise. Rated for 1uF at 50v.


Specifications:
  • DC Voltage 50V
  • Value 1uF
  • Size 11mm x 5mm
  • Pitch 2mm
  • pack of 10
What's in the box:

1 x Electrolytic Radial Capacitor 1uF 50V


Resources:
Theory
Introduction
Types


R7.90  Inc VAT
Raspberry Pi MF Standoff HAT Mounting Kit(11mm) (MF hat mounting kit)
Description:

Need to securely mount your Raspberry Pi HAT to your Raspberry Pi? You need our HAT mounting kit!

The 11mm spacers in the kit fit between the Pi PCB and the HAT, and can be secured using the included M2.5 bolts and nuts.

What's in the box?:

  • 4 x M2.5 x 11mm Male to Female Standoffs
  • 4 x M2.5 +5 Bolts
  • 4 x M2.5 Nuts
R19.90  Inc VAT
Four Digit - Seven Segment Display - Red (display 7 segment red)
Description:

This lovely little (14.2mm) seven segment display provides excellent segment uniformity and is highly visible up to seven meters away. It's ultra bright, and provides great readability even in bright ambient light!

It has four digits and a decimal point on each digit, designed for numeric output, so you can use it to add a clock, timer or counter into your next project.

These displays are multiplexed, common-cathode. What that means it that you can use a 74HC595 or just 8 microcontroller pins if you can spare them to control the 8 anodes (7-seg decimal) at about ~15mA each, and then connect NPN transistors or a TPIC6B595 to the cathodes to sink the 8*20mA = ~120mA maximum per digit.

This is an ultra bright RED colour.

Specifications

  • 100mcd
  • 14.2mm (0.56") digit height
  • Color: red (630nm)
  • Common cathode display
  • Maximum power dissipation per segment: 66mW
  • Maximum pulse peak forward current per segment (1/10th duty cycle, 0.1ms pulse width): 100mA
  • Maximum forward current per segment: 20mA
  • Maximum reverse voltage: 5V
  • Maximum reverse current: 20µA
  • Typical forward voltage: 2.1V at 20mA
  • Maximum forward voltage: 2.5V at 20mA
  • Operating temperature range: -30°C - 70°C
  • Typical luminous intensity: 20mcd

Some code examples
https://circuitdigest.com/microcontroller-projects/raspberry-pi-7-segment-display-tutorial
https://raspi.tv/2015/how-to-drive-a-7-segment-display-directly-on-raspberry-pi-in-python
R12.90  Inc VAT
Hall Water Flow Sensor Flowmeter Water Control 2MPa (flow sensor)
Description:

This product is mainly used for water metering
High amplitude ≥ 4.6V
Low amplitude ≤ 0.5V
Electric strength 1250V/min
Insulation resistance ≥ 100MΩ
Hydrostatic pressure testing ≤ 2.0Mpa

Specification:

The lowest rated working voltage: DC4.5 5V-24V
Maximum operating current: 15 mA (DC 5V)
Working voltage range: DC 5~18 v
Load capacity: ≤ 10 mA (DC 5V)
Use temperature: ≤ 80°C
Operating humidity range: 35%~90%RH (no frost)
Allowing pressure: pressure 2.0Mpa
Temperature: -25~ 80 °C
External threads: 1/2"
Outer diameter: 20mm
Intake diameter: 9mm
Outlet diameter: 12mm

Application:

Water heaters, water vending machines, flow measurement

Package included:

1x Water flow sensor

Flow sensor Wiki
An instructable on how to use the Flow Sensor with Arduino
Adafruit experiment connecting the Flow Sensor to a Raspberry Pi

https://www.ardumotive.com/water-flow-sensor-en.html

RPi: https://www.youtube.com/watch?v=8JXd-2_zJQ0

R79.90  Inc VAT
PP Liquid Water Level Sensor Vertical Float Switch Down White (straight float level)
Description :

A compact vertically mounted float switch which can be mounted at either the top or bottom of a tank (by the supplied 'O' ring and nut) to either rise or fall for activation (internal magnet) of a sealed reed relay.
The sensor is supplied pre-wired with flying output leads.
Float switch is a used to sense the level of liquid within a tank, used to activate a pump, an indicator, an alarm or other device.

Use them with hydroponics, saltwater tanks, freshwater tanks, gardening, aquariums for power head control, pet bowls, fish tanks, filtration, heating, or what ever your project may be
Contains no mercury
Down float switch

Specifications :

  • Maximum Load: 50 W
  • Max Switching Voltage: 100V DC
  • Minimum Voltage: 250V DC
  • Maximum Switching Current: 0.5 A
  • Max Load Current: 1.0 A
  • Max Contact Resistance: 0.4 Ω
  • Temp Rating: -20~ 80℃
  • Net Weight: 12g
  • Material: PP




Package includes :

1 x Liquid Float Switch


Resources:

Python library
Introduction to Buttons and Switches
Types of buttons and switches
R29.90  Inc VAT
13.56MHz RC522 Chip IC Card Induction Module RFID Reader (13.56MHz RC522 RFID reader)
Description:

RC522 chip:
MF RC522 is applied to the highly integrated read and write 13.56MHz contactless communication card chip, NXP launched by the company for the "table" application of a low-voltage, low-cost, small size of the non-contact card chip to read and write, smart meters and portable handheld devices developed better choice. The MF RC522 use of advanced modulation and demodulation concept completely integrated in all types of 13.56MHz passive contactless communication methods and protocols. 14443A compatible transponder signals. The digital part of to handle the ISO14443A frames and error detection. In addition, support rapid CRYPTO1 encryption algorithm, terminology validation MIFARE products. MFRC522 support MIFARE series of high-speed non-contact communication, two-way data transmission rate up to 424kbit/s. As new members of the 13.56MHz reader card series of highly integrated chip family, MF RC522 MF RC500 MF RC530 There are a lot of similarities, but also have many of the characteristics and differences. Communication between it and the host SPI mode helps to reduce the connection narrow PCB board volume, reduce costs.

RFID module:
The MF522-AN module uses the the original Philips MFRC522 chip design circuit card reader, easy to use, low cost, and applies to the user equipment development, the reader and the development of advanced applications, the need for the user RF card terminal design/production. This module can be directly loaded into the various reader molds. Utilizes a voltage of 3.3V, through the SPI interface simple few lines directly with any user CPU motherboard connected communication can ensure that the module is stable and reliable work, distance card reader

Specifications:

Electrical parameters:
Operating current :13-26mA/DC 3.3V
Idle current :10-13mA/DC 3.3V
Sleep current: <80uA
Peak current: <30mA
Operating Frequency: 13.56MHz
Supported card types: mifare1 S50, mifare1 S70 MIFARE Ultralight, mifare Pro, MIFARE DESFire
Product physical characteristics: size: 40mm×60mm
Environmental Operating temperature: -20 to 80°C
Environmental Storage Temperature: -40 to 85°C
Relative humidity: relative humidity 5%-95%

Module interfaces SPI Parameter:
Data transfer rate: maximum 10Mbit/s

Package includes:

1 x RFID-RC522 module
1 x Standard S50 blank card (Non-contact IC card)
1 x S50 special-shaped card (key ring shape)
1 x Straight and 1 x angled male to male header(Soldering required)

Resources:

Our setup guide
R43.90  Inc VAT
NFC Smart Card Tag Tags S50 IC 13.56MHz Mifare IC Copier Read Write White Cards (RFID card white 13.56)
Description:

The NC-Rigid NFC Smart Card is a waterproof PVC card with an NFC chip inside. It has 144 usable bytes of data which is suitable for a URL, text, small contact record or single action phone trigger.

Features :
 
Storage Capacity : 8Kbit,16 partitions, each partition group password
Operating Frequency : 13.56MHZ
Communication Speed : 106Kboud
Reading Distance : 2.5-10CM
Read/Write Time : 1-2MS
Operating Temperature : -20 ℃ to 85 deg c
Number of Erase/Write : > 100,000 times
Saving Data : > 10
Color : White
Material : PVC
Size : Approx. 8.5 x 5.4 x 0.1cm/ 3 x 2 x 0.04"
Application Scope : Access control, Water meters prepaid, campus cards, bus cards, highway tolls, parking lots, community management etc
 
Plackage Includes :
 
1 x NFC Smart Card
R24.90  Inc VAT
13.56MHz RFID Tag For Access System Blue (13.56 RFID tag blue)
Description:

This is a basic 13.56MHz RFID tag great for all your security and access control needs.

RFID is an acronym for “radio-frequency identification” and refers to a technology whereby digital data encoded in RFID tags or smart labels

Features :

Small and durable
Waterproof, shockproof, anti-corrosive.
Keyring for easy carrying.

Specifications :


Main Chip : Fudan F08 compatible S50
Colour : Blue,Yellow, Black, Green, Red
Size : Approx. 40.5×32×4.2mm
Operating Frequency : 13.56 MHz
Communication speed : 106K Boud
Read and write distance : 2.5 ~ 10cm
Read and write time : 1 ~ 2ms
Operating Temperature : -20 ℃ ~ 85 ℃
Endurance :> 100,000 times
Storage capacity : 8Kbit, 16 partitions, each partition with 2 group passwords

Typical applications :
Enterprise / campus access cards, parking, district management,attendance systems, patrol systems, enterprise systems, access control systems, radio frequency identification field etc.


Package includes :

1 x 13.56MHz RFID Keyfob
R12.90  Inc VAT
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