
Best Purecrea products in the Electronics modules category
On this page you'll find a ranking of the best Purecrea products in this category. To give you a quick overview, we've already ranked the most important information about the products for you.
1. Purecrea 1-channel relay module
With this 1-channel relay module, you can easily control large loads using 5V from your Arduino or Raspberry Pi. The control lines of the relay are connected to screw terminals on the board. The load to be switched is also connected via screw terminals. For safety reasons, you should only operate the relays up to 30V. You can switch the control from low-level trigger to high-level trigger on the relay module using a jumper.
Technical details:
Control voltage IN: 3.3V or 5V DC
Supply voltage DC+ DC-: 5V DC
Relay current for switching approximately 5 to 10 mA
1x relay (switching capacity DC: max. 30V/10A, AC: max. 250V/10A)
Relay with 3 contacts (changeover switch)
Direct control with microcontroller via digital output (IN on the module)
3 screw terminals for load connection
Status LED for displaying relay status
4x mounting holes 3mm
Size: 50 x 26 x 19mm
Weight: 18g
Delivery includes:
1x 1-channel relay module.

2. Purecrea Cross Laser Module red 5mW 650nm
This red laser with a metal housing is perfect for Arduino DIY projects. The laser is also clearly visible in daylight.
Caution: Directly looking into the beam is dangerous and can damage the eyes.
Technical details:
- Lens material: Glass
- Laser shape: Cross
- Focus: Adjustable
- Laser power: 5mW
- Laser class: 3R
- Operating voltage: 3-5VDC
- Wavelength: 650nm
- Temperature range: 10 to 40 °C
- Connection cable: 12cm
- Length: 35mm
- Diameter: 12mm
- Weight: 16g
Delivery includes:
1 x Cross laser module red 5mW 650nm.

3. Purecrea XY Joystick Module
This XY joystick module is comparable to a PS-2 game controller. The joystick features not only analog XY signals but also a button that is activated when the joystick stick is pressed. The output of the joystick coordinates is analog and occurs via two outputs. To evaluate the XY signals, two analog inputs are required on the Arduino. Additionally, a digital input is used for the button. You can use the joystick to control a robot, motor, menu navigation, drone, and much more.
Technical details:
Operating voltage: 5V
Signal XY: 2x analog
Button: 1x digital (without pull-up resistor, must be activated on the Arduino)
Size: 34 x 26.5 x 32 mm
Weight: 11 g
Delivery includes:
1x XY joystick module.

4. Purecrea HTU21D Temperature and Humidity Sensor I2C
The HTU21D is an affordable and accurate digital humidity and temperature sensor. Thanks to the I2C interface, you can easily read the humidity and temperature. This sensor is perfect for a weather station or any other applications where you want to measure humidity.
Important Info: Activating the I2C pull-up resistors: There are two 4.7 kOhm resistors on the breakout board that pull up the SDA and SCL lines. If you want to operate multiple sensors on I2C, only one breakout board should have the resistors. On the HTU21D breakout board, the resistors are not connected to VCC by default. To activate them, you need to connect the three solder points on the top of the board with solder.
Technical Details:
Operating Voltage: 1.5-3.6 V
Interface: I2C
Humidity Measurement Range: 0 to 100 % RH
Temperature Measurement Range: -40 °C to 125 °C
Humidity Accuracy: +/- 2 % RH
Temperature Accuracy at 25 °C: +/- 0.3 °C
Dimensions: 15 x 15 x 2.7 mm
Weight: 1.5 g
Included in Delivery:
1x HTU21D Temperature and Humidity Sensor I2C
1x 4x1p Pin Header.

5. Purecrea HLK-PM01 230V to 5V step-down converter
With this step-down converter, you can transform 230V AC to 5V DC. This voltage converter with rectification and voltage regulator is suitable for feeding 5V microcontrollers via 90 to 264V AC.
Caution: Working with 230V voltages is dangerous and can lead to fatal accidents. The module may only be used by qualified personnel. We accept no liability for improper use of the device.
Features:
- Compact design
- Wide input voltage range from 90V to 264V AC
- Overload and short-circuit protection on the output
- Low no-load power dissipation of only less than 0.1W
Technical details:
- UL and CE certified
- Voltage input: 90 to 264V AC
- Voltage output: 5V DC
- Output current: 600mA
- Power output: 3W
- No-load power dissipation: less than 0.1W
- Output overload and short circuit protection
- Operating temperature: -20°C to +60°C
- Efficiency at 230V: greater than 70
- Accuracy at 5V: +/- 0.1V
- Dimensions: 34 x 20 x 15mm
- Weight: 20g
Scope of delivery:
1x HLK-PM01 230V to 5V step-down converter.

6. Purecrea 90x70mm prototype PCB board
Discover the versatile 90x70mm prototype PCB board for your projects! This generously sized, double-sided circuit board is ideal for quickly and easily building prototype circuits. Forget the tedious task of creating boards for your testing purposes. With its four practical mounting holes, the board can be effortlessly integrated into any project. Its robust construction ensures a long lifespan and reliability in your developments. Whether you are a beginner or an experienced developer, this board offers you the flexibility you need for your creative or professional projects.
Features:
- Double-sided design for versatile circuit setups.
- Large dimensions (90x70mm) provide ample space for complex projects.
- Four mounting holes allow for easy assembly and integration into various applications.
- Sturdy construction promises durability and reliability.
Application Examples:
- Ideal for rapid prototyping of electronic circuits.
- Perfect for educational projects in schools and universities.
- Useful for DIY projects at home, from simple circuits to complex electronic devices.
- Applicable in professional product development to quickly test and refine ideas.
Technical Details:
- Color: Green
- Material: Double-sided copper PCB
- Hole diameter: 1mm
- Pitch: 2.54mm
- Suitable for soldering point-to-point connections
- Mounting hole diameter: 2.6mm
- Dimensions: 90 x 70 x 1.6mm
- Weight: 17.2g
Delivery includes:
1x 90x70mm prototype PCB board.

7. Purecrea Linienlaser Modul rot 5mW 650nm
The Purecrea line laser module is a versatile electronic module that is ideal for various crafting projects, especially with Arduino. With a laser power of 5mW and a wavelength of 650nm, this module offers clear visibility even in daylight. The metal housing ensures a robust construction, while the adjustable focus allows for precise applications. The laser is designed to operate at a voltage of 3-5VDC and functions within a temperature range of 10 to 40 °C. It is important to exercise caution when handling the laser, as direct exposure to the beam can be dangerous. The module is lightweight and compact, making it a practical choice for hobbyists and tech enthusiasts.
- Adjustable focus for precise applications
- Highly visible laser beam, even in daylight
- Sturdy metal housing for durability
- Compatible with Arduino and other crafting projects.
