DIYgh Tech Store
Showing 1–15 of 76 results
1-Channel 12V Relay Module | For Car Electronics & Solar Projects
The standard relay for 12V systems. Unlike the standard 5V Arduino relay, this module is designed to run directly on 12V power. It is perfect for automotive projects, car security systems, and solar setups where only 12V is available.
-
Coil Voltage: 12V DC.
-
Trigger: Low Level (Connect Signal to GND to switch ON).
-
Max Load: 250V AC / 10A.
-
Best For: Car Alarms, Central Locks, Horns, and Solar Inverters.
1-Channel 5V Relay Module | Low Level Trigger for Arduino
Control high voltage safely. This single-channel relay allows your Arduino to switch high-power devices like light bulbs, water pumps, or fans. It isolates your microcontroller from the high voltage using an internal switch.
-
Trigger: Low Level (Connect Signal to GND to turn ON).
-
Max Load: 250V AC / 10A.
-
Indicators: Red Power LED + Green Status LED.
-
Best For: Smart Lamps, Fan Control, and Simple Automation.
1.3 Inch OLED Display Module (Blue) | I2C SH1106 Screen 128×64
Bigger, clearer, and easier to read. The 1.3-inch OLED gives you 35% more screen area than the standard 0.96-inch version. It features the exact same 128x64 resolution but with larger pixels for better visibility from a distance.
-
Size: 1.3 Inch (Diagonal).
-
Controller: SH1106 (Requires specific library setting).
- Interface: I2C (4 Pins).
- Best For: Digital Dashboards, Smart Meters, and Menus.
16-in-1 Sensor Module Kit for Arduino, ESP32 & Raspberry Pi
Expand your project possibilities instantly. This value-packed kit contains 16 of the most popular sensors for home automation and robotics. Instead of buying modules individually, get everything you need in one box.
-
Includes: DHT11 Temperature, Relay, Ultrasonic, Motion Sensor, and 12 more!
-
Compatibility: Works perfectly with Arduino Uno, Mega, Nano, and Raspberry Pi.
-
Perfect For: Learning how to read data and control devices.
20×4 LCD Display Module (Blue Backlight) | 2004A Character Screen
Double the space, double the data. The standard 16x2 LCD is great, but sometimes you need more room. The 20x4 LCD gives you 4 lines of text (20 characters per line), allowing you to display complex menus, sensor readings, and status messages all at once.
-
Size: 20 Characters x 4 Lines.
-
Display: White Text on Blue Background.
-
Controller: HD44780 (Standard Industry Chip).
- Best For: Weather Stations, 3D Printers, and Advanced Menus.
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.
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.
-
Channels: 4 Independent Relays.
-
Trigger: Low Level (Connect Input to GND to switch ON).
-
Load Capacity: 10A @ 250V AC / 10A @ 30V DC.
-
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).
-
Frequency: 433MHz
-
Includes: 1x Transmitter (Square), 1x Receiver (Rectangle)
-
Modulation: ASK (Amplitude Shift Keying)
-
Best For: Remote control cars, weather stations, and wireless switches.