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R159.90  Inc VAT
R799.90  Inc VAT
Relay Board (KT relay kit)
Product Description

This is a versatile relay board kit that can easily be configured via jumpers and trimmer potentiometers to do a range of tasks.

Most sensor and switches can be connected to the input of the board and the trigger level set for the input device. This can be inverted if required, then there is the option to feed this straight to the relay or a timer of up to 25 minutes can be used. Irrespective of the state of the invert jumper whenever the sense LED goes from off to on the timer restarts.#

The board can run off any voltage from 4.5 to 6 volts.

The output cans switch DC or mains.

This datasheet details what the board does and how to use it along with some worked examples. A more detailed set of information including the build instructions & how to configure the kit can also be downloaded.

Click here to download the full teaching notes pdf_icon.gif

WARNING: Using mains electricity can be dangerous and should only be attempted by qualified electricians.

This kit includes:

  • 3 x 100Kohm resistors
  • 3 x 220ohm resistors
  • 1 x 47Kohm resistors
  • 1 x 1Mohmpotentiometer
  • 1 x 10Mohm potentiometer
  • 2 x 1N4001 diodes
  • 2 x 5mm red LEDs
  • 1 x 100uF capacitors, electrolytic
  • 1 x 4.7uF capacitors, electrolytic
  • 1 x 2N7000 n-channel FET
  • 2 x 2 way terminal blocks
  • 1 x 3 way terminal blocks
  • 1 x LM324 operational amplifier IC
  • 1 x 14 pin IC holder
  • 2 x 3 way pinstrip
  • 2 x Jumpers
  • 1 x Relay
  • 1 x Relay board PCB

PCB dimensions: 86.5mm x 49mm.

This kit is supplied as a pack of parts and requires soldering.

R159.90  Inc VAT
Wemos® Higrow ESP32 WiFi bluetooth Battery DHT11 Soil Temperature And Humidity Sensor Module (Wemos Higrow)
Description:
 
More details available at:https://github.com/LilyGO/higrowopen


A LG 3000mAH 18650 battery could make ESP32 run 17 hours or more.
This capacitive soil moisture sensor differs from most of the resistive sensors on the market, using capacitive sensing principle to detect soil moisture. It avoids the problem that the resistance sensor is easy to corrode and greatly prolongs its working life.
Size: 193.5mm x 29.4mm
 
Package includes:
 
1 x Wemos® Higrow ESP32 WiFi bluetooth Battery DHT11 Soil Temperature And Humidity Sensor Module
R389.90  Inc VAT
Battery Holder for BBC micro:bit 2 x AAA with switch (micro:bit battery box switch)

Description:

As micro:bit is gaining traction in this region, powering it is a must :)

If you are new to micro:bit, it is a powerful embedded platform or microcontroller board with easy to get started features, even easier than Arduino. It can be powered by USB micro B when loading the program, or you can use 2 x AAA batteries. So here comes the battery holder for this microcontroller.



This is a 2 x AAA battery holder for micro:bit with cover and ON/OFF slide switch. Neat!

Note: Battery & micro:bit is not included.

Features:

  • Terminated with 2-way JST connector, match with battery input on micro:bit
  • Holder for 2 x AAA batteries
  • ON/OFF slide switch
  • Comes with cover

What's in the box?

1 x Battery Holder with On/Off Switch



R34.90  Inc VAT
Solar Power Management Module, for 6V~24V Solar Panel (WS solar manager)
CAUTION:

DO NOT put any non-rechargeable battery, like dry cell, into the battery holder. Serious consequences including explosion may occur if you try to charge a non-rechargeable battery.

SAFETY MEASUREMENTS:

  • Li-ion and Li-po batteries are quite unstable. They may cause fire, personal injury, or property damage, if they're not properly recharged or used.
  • Do not reversely connect the polarities when recharging or discharging the battery. Do not use inferior charger/charging panel to recharge the battery.
  • Do not mix use old batteries with new ones, avoid using batteries of different brands.
  • When buying Lithium battery, should always make sure the battery specification is compatible with the expansion board. Choose batteries from formal manufacturer, and ensure the batteries will work stably and safely by aging test.
  • Lithium batteries have limited cycle life, they will also deteriorate as time goes by. Should be replaced with new ones when the batteries reaching their max cycle life, or working over two years, whichever comes first.
  • Should be placed carefully and properly, keep it away from inflammables and explosives articles, away from children, avoid any safety accident caused by careless storage.


Overview

This solar power management module is designed for 6V~24V solar panel. It can charge the 3.7V Li battery through solar panel or USB connection, and provides 5V/1A 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 6V~24V 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
  • Two 5V output interfaces: pinheaders and USB port
  • Onboard high capacity aluminum electrolytic capacitor and SMD ceramic capacitor, reducing the ripple, stable performance
  • 14500 battery holder and Pstrong.0 battery connector, for connecting multi kinds of 3.7V 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 panel input voltage (SOLAR IN): 6V~24V
  • Micro USB input voltage (USB IN): 5V
  • Pinheader / USB output (USB OUT): 5V 1A
  • Charging cutoff voltage: 4.2V±1%
  • Over discharging protection voltage: 2.9V±1%
  • Solar panel charge efficiency:: ~78%
  • USB charge efficiency:: ~82%
  • 3.7V battery boost output efficiency: ~86%
  • Max quiescent current: <2mA
  • Operating temperature: -40℃~85℃
  • Dimension: 65.2mm × 56.2mm × 22.9mm
What's on Board
  1. Solar panel charging input: charged by solar panel, DC-002 jack or screw terminal
  2. USB charging input: charged by USB connection, connect a 5V power adapter through the Micro USB port
  3. 5V/1A power output: provides regulated 5V/1A output, USB port or 2.54mm pinheader
  4. Battery interfaces: for connecting 3.7V Li battery, Pstrong.0 connector or 14500 battery holder
  5. CS8501: USB power management chip, for USB charging and 5V/1A boost output
  6. CN3791: solar power management chip, for solar panel charging and buck input
  7. Li battery protection chip: Li battery over charge / over discharge protection
  8. Battery switch
  9. MPPTSET switch (bottom side):
    supported level: 6V/9V/12V/18V/24V
    select the level closed to input level to improve charging efficiency
  10. BOOT key
  11. Battery capacity indicators
  12. USB charging indicators:
    USB Charge: on when USB charging
    USB Done: on when the battery is full charged by USB
  13. Solar panel charging indicators:
    Solar Charge: on when solar panel charging
    Solar Done: on when the battery is full charged by solar panel
    Solar Warning: on when solar panel reverse connection
  14. Battery warning: on when battery reverse connection
  15. Power output indicator: 5V/1A output
Application Example
Dimensions
Development Resources

Wiki : www.waveshare.com/wiki/Solar_Power_Manager

Recommendation

Applicable solar panel: Solar Panel (6V 5W)
or Solar panel 18V 10W

R149.90  Inc VAT
12V Lead Acid Battery Digital Charge Level Indicator (battery meter digital)
Description:

Charge Level Red Indicator Voltmeter Precise for 12V Lead-acid Battery

Specifications:

1. Working current:5-15mA
2. Eight electricity Level Resolution:10% 25% 40% 50% 60% 75% 90% 100%
3. Voltmeter accuracy:1%
4. Working temperature: -10 ~ 65 Celsius
5. Operating Humidity: 10 ~ 80%
6. Dimensions: 48mm x 29mm x 22mm

Indicator:

Battery voltage is greater than 11.1V, 1 led indicator is lit.
Battery voltage is greater than 11.3V, 2 led indicator is lit.
Battery voltage is greater than 11.6V, 3 led indicator is lit.
Battery voltage is greater than 11.9V, 4 led indicator is lit.
Battery voltage is greater than 12.2V, 5 led indicator is lit.
Battery voltage is greater than 12.5V, 6 led indicator is lit.
Battery voltage is greater than 12.9V, 7 led indicator is lit.
Battery voltage is greater than 13.3V, 8 led indicator is lit.

Package Includes:

1 x lead acid LED indicator battery capacity tester voltmeter 12V
R93.90  Inc VAT
UPS Module for Raspberry Pi Pico, Uninterruptible Power Supply (WS Pico UPS)
Uninterruptible Power Supply for Pico

Keeps your Pico running while recharging, monitoring battery status via I2C

Features at a glance

The Pico-UPS-A is a dedicated UPS (Uninterruptible Power Supply) module designed for Raspberry Pi Pico. It incorporates Li-ion battery switching charger with power path management, and voltage/current monitoring chip, allows monitoring the battery operating status via I2C bus.

  • Standard Raspberry Pi Pico header, supports Raspberry Pi Pico series boards
  • Incorporates Li-ion battery switching charger with dynamic power path management, more stable power supply
  • I2C bus communication, monitoring the battery voltage, current, power, and remaining capacity in real time
  • Multi battery protection circuits: over charge/discharge protection, over current protection, short circuit protection, and reverse protection, along with the equalizing charge feature, more safe and stable
  • Onboard recharging indicator, power indicator, and battery warning indicator to check if the battery is connected correctly
  • Comes with development resources and manual (Raspberry Pi Pico C/C and MicroPython examples)


Specifications

Recharge voltage     5V
Control busI2C
Battery support14500 Li-ion battery (NOT included)
Dimensions60 × 21mm

Raspberry Pi Pico header compatibility

onboard female pin header for direct attaching to Raspberry Pi Pico



Raspberry Pi Pico and Li-ion battery are NOT included.

What's On Board

  1. ETA6003
    recharger chip
  2. INA219
    voltage/current monitoring chip
  3. S8261
    Li-ion battery protection chip
  4. FS8205
    Li-ion battery protection MOS
  5. AO3400
    reverse-proof MOS
  6. SI2305
    counter current preventing MOS
  1. Rapsberry Pi Pico header
    for direct attaching to Raspberry Pi Pico
  2. Power switch
  3. Activate button
    activate the protection circuit after replacing battery
  4. 14500 battery holder
Pinout definition



Outline dimensions



Resources & Services

R219.90  Inc VAT
Duracell Plus Alkaline AAA Batteries - 16 Pack (Duracell AAA 16pack)
Description:

Engineered to deliver that kick off additional power, Plus Power batteries are available in size AA, AAA, C, D and 9V. Plus Power AAA batteries provide reliable power for your everyday devices like motorized toys, flashlights, portable games consoles, remote controls, CD players, etc. and Duralock Power Preserve technology keeps them charged for up to 10 years in storage

Duracell Plus Power AAA batteries – long lasting power guaranteed. These multi-purpose batteries are ideal for reliably powering everyday devices. Duracell Plus Power batteries give you the freedom to enjoy the use of your appliances by giving you a product you can rely on. The Duracell Plus Power batteries are best used when you are looking for reliable, long-lasting power in your every-day devices such as motorized toys, flashlights, portable games consoles, remote controls, CD players, etc. Duralock technology keeps unused Duracell batteries fresh and powered for up to 10 years in ambient storage.

Features
- Long-lasting power, guaranteed
- Duralock
- Leakage prevention
- Suitable for everyday devices
- Long-lasting power, guaranteed
- 1.5V Alkaline

What's in the box
12 x AAA

R194.35  Inc VAT
Duracell Rechargeable AAA 900mAh Batteries - 4 Pack (Duracell AAA 4 recharge)
Description:

Duracell Rechargeable AAA 900mAh batteries let you charge 100's times and with a Long-Life Ion Core you get amazing power in every battery. Plus, they come pre-charged so you can power your devices right away and will stay charged for up to 12 months, when not in use. Additionally, unused Duracell Rechargeable AAA 900mAh batteries are guaranteed to last 5 years. These powerful NiMH batteries work in any NiMH charger. With a longer-lasting charge and fewer recharges, Duracell Rechargeable AAA 900mAh batteries really do set themselves apart from the rest.

Features
- Long-lasting power, charge after charge
- Up to 400 of recharges
- 50 hours in a wireless mouse
- Up to 275 pictures with a digital camera
- 900 mAh

What's in the box
4 pack AAA Recharge Battery

R205.85  Inc VAT
Duracell MN21 Speciality 12V Alkaline Batteries- 2 Pack (Duracell 12V MN21)

Description:

Duracell Specialty alkaline MN21 batteries – long lasting power for your devices. Duracell Specialty batteries have up to 5 years of in-storage guarantee with Duralock Power Preserve technology so you can be confident these alkaline batteries will be ready when you need them. They are designed for use in Wireless remote controls, wireless doorbells, security systems (alarms, locators).

Features
- Long-lasting power, guaranteed
- Duralock
- Easy to find right size
- 12V Alkaline

Long Lasting Specialty, Coin And Button Batteries
Duracell offers a wide range of specialty batteries (coins, buttons, and specialty batteries). Avaliable in a variety of sizes to power a wide range of devices, from electronics to medical devices and small toys.

What's in the box
2 x MN21 batteries

R40.25  Inc VAT
SONOFF SNZB-02 ZigBee Temperature And Humidity Sensor Real Time Low-battery notification Works with SONOFF ZigBee Bridge eWeLink APP (zigbee SNZB-02)

Note 1: Batteries not included - ( 3V CR2450)
Note 2: SNZB-02 must be used with the Zigbee Bridge.


Description:

SONOFF SNZB-02 is a ZigBee temperature and humidity sensor that can seamlessly work with SONOFF ZigBee Bridge to track and record the temperature and humidity change in your home, which all real-time readings can be checked on eWeLink APP. Better still, you can set a condition in the smart scene that is the fan is turn on/off when the temperature reaches the limit value, or the dehumidifier in your room starts working once the humidity is over higher, helping prevent the growth of mildew and allergens. You can set a smart scene to trigger alerts through events like high/low temperature, high/low humidity conditions and more.

Device sharing function makes your kids, family, and even the neighbors informed about the environmental conditions of your home with their mobile phones.

It is a battery-operated sensor that can be placed in any corner of your house to monitor the room temperature and humidity. Installation without any tool, simply stick the sensor on the surface of the wall or device and see it nicely to work for you!

1. Do not install on a metal surface, it will affect the wireless communication distance.
2. Installation height of less than 2 m is recommended.
3. The device can be operated intelligently via working with the SONOFF ZigBee Bridge to communicate with other devices.

SONOFF SNZB-02 ZigBee Temperature And Humidity Sensor Overview

Features:
Monitor indoor temperature and humidity.
Sync the real-time temperature and humidity recordings to APP.
Can trigger Wi-Fi devices in smart scene.
Add a camera to ensure you know any emergency in your home.
Low-battery notification.
Quick and easy to install.

Specifications:
Battery: 3V(CR2450)
Wireless protocol: Zigbee (IEEE 802.15.4)
Dimensions: 43mm x 43mm x 14mm

What's in the box
1 x SONOFF SNZB-02 ZigBee Temperature And Humidity Sensor

R239.90  Inc VAT
PWM 30A Dual USB Solar Panel Battery Regulator Charge Controller 12/24V LCD (30A PWM solar charge controller)
Description:

Solar panels are a clean and ecological source of electricity.

Obtaining this energy, however, poses a number of challenges for device designers. The amount of energy produced by the panel is strongly dependent on the angle of incidence and the intensity of the light falling on the surface of the cells. This, in turn, leads to unstable power supply parameters at the output, as even shading a small part of the panel may drastically reduce the efficiency.


The optimal solution to the above-mentioned problems is the use of a set consisting of a solar panel, a battery and a charge controller. Such a set allows to ensure constant parameters of power supply to receivers, and also to store energy produced excessively for later use.


The 30A-PWM-LCD solar charge controller allows you to connect panels connected to each other both in series and in parallel - remembering not to exceed the permissible values of current and voltage at the input of the device. Due to the operating characteristics of the PWM controllers, it should be remembered that when the panels are connected in series, the rated voltage at the output for charging the battery is 24V.

PWM stands for Pulse Width Modulation. PWM charge control devices can be explained as an electrical switch between batteries. The switch can be quickly switch on and switch off. Therefore, desired voltage can be obtained to charge the batteries. The charge current will be slowly decreased as the batteries charged.

Specifications:
 
Rated Voltage: 12V/24V(Auto recognition)
Rated Current: 30A
Charging Mode: PWM
USB output: 5V 2A
Self-consume: <10mA
Operating Temperature: -35 ~ 60 °C
Storage Temperature: -35 ~ 60 °C

Typical usage example:

 
Package Includes:
 
1 x 30A Solar Charge Controller
R399.90  Inc VAT
DC UPS Mecer 3500mAh battery On-line UPS (For WiFi / 3G / 4G Router) (DC 3500mAh UPS router)
Mecer 350000mAh battery On-line UPS (For WiFi / 3G / 4G Router), Built-in Li-ion battery

Features:

  • Built-in Li-ion battery
  • Microprocessor control guarantees high reliability
  • Manual power off switch
  • Auto start when plugged in
  • Multi-color indicator
  • Overload, short-circuit, over-charge and over-discharge protection

MODEL ePower

AC INPUT

  • Voltage Range 90 VAC ~ 264 VAC
  • Frequency 50 or 60 Hz
  • Surge protection 1.5KV (Optional K.21 enhanced, 6KV)

DC OUTPUT

  • Voltage 12VDC ± 5%
  • Max. Power 25W (2.1A)

Battery

  •  Type Lithium-ion Battery
  •  Voltage 3.7VDC
  •  Capacity 3500mAh
  •  Typical Charging Time 3 hours recover to 90% capacity

Protection

  •  Battery Deep Discharge, Over-charge and Short Circuit Protection
  •  Input/Output Fuse for Short Circuit and Overload Protection

INDICATORS

  • LED Full Battery Green lighting
  • Battery Charging Constant flashing on Green LED

Battery

  • Discharging Quick flashing on Green LED
  • Fault Red lighting

PHYSICAL

  • Input Plug Mounted on the housing (NEMA/UK/Schuko)
  • Ouput Cable 1m Length (DC Male Jack, OD 4mm, ID 1.7mm or OD 5.5mm, ID 2.5mm)

Dimensions

  •  L X W X H (mm) 68 x 42 x 74
  •  Net Weight (g) 280

Backup Time Table : (For Reference only)

  •  12V/1A Router 150 mins
  •  12V/1.5A Router 120 mins
  •  12V/2.0A Router 90 mins
R449.90  Inc VAT
Mecer 850VA OFF-LINE UPS (Mecer UPS 850VA black)
Description:

Mecer 850VA OFF-LINE UPS (with AVR,Monitoring Software Cable & Built-in Surge Protection) - Black

Features:

  • 850VA line interactive UPS
  • Microprocessor control guarantees high reliability
  • Boost and buck AVR for voltage stabilization
  • Auto restart while AC is recovering
  • Simulated sine wave
  • Off-mode charging
  • Cold start function
  • USB communication port and RJ-11/RJ-45 protection
  • Overload, discharge, and overcharge protection
R799.90  Inc VAT
Red Mini Battery Isolator Switch Spare Key (battery switch spare key)
Description:

Spare key for the isolator switch

This handy switch can be used to disconnect your battery from your projects

Material: Nylon


What's in the box?

1 x battery isolator switch key(spare key only)
R49.90  Inc VAT
Mini Battery Isolator Switch (battery switch)
Description:

This handy switch can be used to disconnect your battery from your projects

Spare keys are available here

What's in the box?

1 x battery isolator switch
R189.90  Inc VAT
10M 0.12 x 8mm Nickel Plated Steel Sheet Strap Strip For Battery Spot Welding (10m nickel strip)
Specifications:

  • Material: Nickel and steel
  • Color: Silver
  • Length: 10 M
  • Width: 8 mm
  • Thickness: 0.12 mm

Feature:
  • - Nickel plated steel sheet
  • - Low Resistance,corrosion resistance
  • - Excellent gloss,ductility,solderability
  • - Widely used in Ni-Mh battery, lithium battery,power tools,cellphone and pc batteries

Package includes:
1 X Nickel Plated Steel Sheet 10m
R219.90  Inc VAT
LC14500-750mAh 3.7V Li-ion (AA size) (14500 750mAh battery blue)

PLEASE NOTE:

Misusing or mishandling a lithium-ion battery may cause a FIRE or EXPLOSION which can result in INJURY or DEATH.

Description:

LC14500 3.7V Li-Ion battery with 750mAh and is rechargable. AA size.

Specifications:

  • Model: 14500
  • Type: Li-Ion Battery
  • Nominal Capacity: 750mah
  • Nominal Voltage: 3.7v
  • Colour:    Blue   
What's in the box

1 x 14500 Li-ion battery
R59.90  Inc VAT
CR2032 Button Battery Holder Case With On/Off Switch 3V single (CR2032 single enclosure)
Description:

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.

Features:

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

What's in the box?

1 x CR2032 Battery enclosure (Battery not included)
R13.90  Inc VAT
DIY Wooden Battery Powered House STEM Kit (DIY house kit)
Description:

What better way to learn electronics than to build your very own mini wooden dollhouse with blinking LEDs! This DIY kit is simple enough to be built by 4 years old children, with parent's help. And children 6 years old and above can build it by themself! Let them explore simple electronics by lighting up an LED while connecting it to a switch. You can also let your kids understand how the battery and LED polarity works! Furthermore, the house is a perfect platform for children to innovate and create better projects by adding more features into it.

Features:

  • Do It Yourself Wooden Battery Powered House for kids
  • LED is powered up with 2 AA batteries
  • Suitable for age 4 years old and above
  • Come with everything needed to assemble as a working mini turbine
  • No soldering is needed

What's in the box?

  • 1 x AA Battery Holder
  • 1 x Wooden House Structure
  • 1 x Small DC Motor with plastic enclosure
  • 1 x Wire connector
  • 1 x Small screwdriver
  • 1 x Blinking LED
  • 1 x Bracket for Door
  • 1 x Switch
  • Some screws and nuts for mounting
  • Some double-sided tape

Resources:

R76.90  Inc VAT
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