DIYgh Tech Store
Showing 16–30 of 124 results
3.7V 1S Lithium Battery Protection Board
The 3.7V 1S Lithium Battery Protection Board is a compact protection circuit for single-cell 18650 lithium-ion and LiPo batteries. Featuring an 8205A dual MOSFET and a battery protection controller, it helps protect rechargeable cells against overcharging, over-discharging, excessive current and short circuits. Ideal for portable electronics, IoT devices, battery repair and DIY rechargeable projects.
3×4 Matrix Membrane Keypad Module | 12 Button Numeric Pad
A simple and reliable input device for Arduino and DIY electronics projects. This flexible 12-key keypad provides only the essential keys (0–9, *, #)—no letters—making it ideal for numeric-only applications. It comes with a peel-and-stick adhesive backing for quick mounting on enclosures, panels, or doors.
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Keys: 12 (Telephone-style layout)
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Interface: 7 pins (2.54 mm standard pitch)
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Mounting: Self-adhesive sticker backing
- Best for: Electronic door locks, vending machines, access control systems, phone dialers, and keypad-based Arduino projects.
4-Channel 5V Relay Module | Optocoupler Isolated for Arduino
Control 4 appliances with one board. This module contains 4 separate relays, allowing your Arduino or ESP32 to switch up to 4 high-voltage devices ON and OFF. It features Optocoupler isolation to protect your microcontroller from electrical noise and surges.
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Channels: 4 Independent Relays.
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Trigger: Low Level (Connect Input to GND to switch ON).
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Load Capacity: 10A @ 250V AC / 10A @ 30V DC.
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Best For: Home Automation, Smart Switches, and Industrial Control.
4×5 Matrix Membrane Keypad 20-Key
20-key membrane matrix keypad for Arduino, ESP32 and embedded electronics projects. The flexible 4×5 keypad provides an easy user-input interface for passwords, menus, access-control systems and DIY electronic devices.
Layout: 4 × 5 Matrix
Number of Keys: 20
Interface: GPIO Matrix
Connections: 9
Switch Type: Momentary membrane
Mounting: Self-adhesive backing
Best For: Password entry, access control, menus and microcontroller projects
433MHz RF Transmitter & Receiver Kit | Wireless Module for Arduino
Cut the cord. Go wireless. This kit includes one Transmitter and one Receiver. It is the simplest and most affordable way to send data wirelessly between two Arduinos up to 100 meters (with antenna).
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Frequency: 433MHz
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Includes: 1x Transmitter (Square), 1x Receiver (Rectangle)
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Modulation: ASK (Amplitude Shift Keying)
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Best For: Remote control cars, weather stations, and wireless switches.
433MHz Wireless Two-Way Light Switch Kit White
The 433MHz Wireless Two-Way Light Switch Kit allows one light or appliance to be controlled wirelessly from two different locations. It includes one receiver and two white wireless transmitters, making it ideal for bedrooms, corridors, staircases, halls, shops and home lighting upgrades without extra wall wiring.
4WD Smart Robot Car Chassis Kit (ZK-4WD) | Double Layer Acrylic Platform
Build a robot that goes anywhere. The ZK-4WD Chassis gives you 4 powerful motors for better traction and speed than the standard 2-wheel robots. Perfect for line followers, obstacle avoidance robots, and final year engineering projects.
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Drive: 4-Wheel Drive (4 Motors included).
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Chassis: Double-layer Acrylic (Plenty of space for batteries & sensors).
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Includes: 4 Motors, 4 Wheels, Chassis Plates, Screws & Switch.
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Best For: Arduino & ESP32 Robot Projects.
4×4 Matrix Membrane Keypad | 16 Button Keypad Module
The standard keypad for security projects. This ultra-thin 16-button keypad allows users to enter passwords, navigate menus, or control robots. It features a peel-and-stick adhesive backing, making it easy to mount on any plastic project box or door.
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Keys: 16 (0-9, A-D, *, #)
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Mounting: Self-Adhesive Backing (Peel & Stick)
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Interface: 8 Pins (Standard 2.54mm header)
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Best For: Electronic Door Locks, Calculators, and Attendance Systems.
5mm LED Light Emitting Diode – Multiple Colours
The 5mm LED Light Emitting Diode is a compact, energy-efficient electronic component used for visual indicators, Arduino projects, circuit testing, robotics, electronic displays and DIY lighting applications.
Available in Red, Green, Blue, Yellow, White and Orange, these two-pin through-hole LEDs are ideal for students, electronics hobbyists, STEM facilitators and circuit developers.
Select your preferred colour for your project.