The Adafruit Proto-Screw shield is one of those brilliantly simple ideas, a prototyping board with a screw terminal for each of the Arduino pins. The shield also has stackable headers so you can plug another shield on top and still have access to all the signals.

Supplied as a bare board, plus 1 x green and 1 x red LED, 1 x reset button, a set of stacking female headers and enough 3.5mm screw terminal blocks for 36 connections. All parts are through hole making this quite a straight forward board to assemble, see the Adafruit assembly guide.

• 4 x bonus terminals for your own signals
• Dimensions 66 x 73 x 10mm (2.6 x 2.9 x 0.4in.)
• Adafruit part no. 196

*Customers looking to resell on eBay or Amazon should contact Adafruit directly.

If you are experimenting with monitoring fleets, high-altitude scientific experiments, or any kind of project requiring localisation of devices, the MKR GPS Shield will offer you the functionality you need, and it is plug 'n' play!

The MKR GPS Shield is based on the u-blox SAM-M8Q GNSS (Global Navigation Satellite System) module. It is meant to be used on top of boards in the MKR format, but thanks to its Eslov connector, it is also possible to hook it up to any board having that kind of connector available using a cable.

This module is designed to operate with different positioning services concurrently. It receives and processes the signals from GPS, GLONASS, and Galileo. It interfaces with Arduino boards either through a serial interface, when used with headers and put on top of a MKR board, or through an I2C interface and a dedicated ESLOV cable supplied.

Technical Specifications

These sensors are of the latest generation and measure, Atmospheric pressure Temperature and humidity Light intensity (in LUX, max 650).

To help you build projects and store the data collected locally, this shield has a slot for a microSD card.

There is a ready to use library with examples and methods to read values from the different sensors, that provides an easy and smooth integration path.

The sensors used in this kit are: ST LPS22HB which measures atmospheric pressure. ST HTS221 which measures temperature and humidity, and VISHAY TEMT6000 which measures Lux of the ambient light.

Technical Specifications

Beetle is one of the smallest Arduino Leonardo boards available on the market. It offers minimal size without compromising functionality. It has an Atmel AtMega32u4 running at a clock speed of 16MHz and has plenty of interfaces: 10 digital pins, 5 analog pins and 4 PWM pins. To further make it user-friendly, it is compatible with Micro USB so that direct programming and testing is no longer a headache. The ATmega32U4 comes pre-burned with a bootloader that allows you to upload any new code that is applicable to Arduino Leonardo.

As the smallest Arduino Leonardo, it enjoys similar powerful functions. Beetle aims to solve the problems of a low-cost controller, like ease-of-use and provides a low-cost solution for disposable projects. It is ideal for applications like DIY projects, workshops, gift projects, E-textiles and educational applications for students who can not afford spending too much on hardware.

• Features:
• 20mm x 22mm compact size
• Direct downloading and testing via Micro USB
• V-shaped large-size gold-plated IO ports make it convenient for the user to twist wires upon, and can also be directly sewn on clothes with conductive thread
• Two honeycomb shape gold-plated power interface
• Magic light blue soft BLINK indicator
• Specification:
• Microcontroller: ATmega32u4
• Clock Speed: 16MHz
• Operating voltage: 5V DC
• Digital I/O Pins: 10
• PWM Channels: 4
• Analog Input Channels: 5
• UART: 1
• I2C: 1
• Micro USB: 1
• Power Ports: 2
• Flash Memory: 32 KB of which 4KB used by bootloader
• SRAM: 2.5KB
• EEPROM: 1KB
• Size: 20mm x 22mm x 3.8mm

The Arduino Grove Base Shield from Seeed Studio is switchable between 5V and 3.3V making it compatible with the official and a wide range of unofficial Arduinos. This board is the hub for a whole system of sensors, actuators, displays and more. Starting with simple LEDs and building to more complicated devices such as accelerometers, Bluetooth, sound / light / temperature sensors, the Grove system seems to have one of everything you could want. Adding a new module is as simple as plugging it into the Grove base shield and adding a few lines of code, thanks to extensive sample code available online. The Grove base shield has 4 x analog, 6 x digital, 4 x I2C and 1 x UART connectors, plus the standard GPIO headers. All the Grove products are supported with getting started guides, manuals, wiki pages, code snippets and libraries.

• Hub for the Grove family of add-on modules
• Dozens of add-on modules available
• Comprehensive documentation and code samples

Seeed provide technical documentation, example projects and software libraries on their product pages. if you require this information please visit this product's page.

The Grove Beginner Kit for Arduino is one of the best kits for beginners to be able to build any Arduino project.

The kit is powered by one Arduino UNO compatible Board (ATmega320p based Seeeduino Lotus), has an all-in-one PCB design and comes with ten additional Grove Arduino sensors. All the modules have been connected to the Seeeduino through the PCB stamp holes so no Grove cables are needed to connect. The modules can also be taken out for use with Grove cables to connect the modules.

• All modules are pre-wired, no breadboard or jumper cables required
• With 12 step by step project tutorials provided, this is ideal for beginner and STEAM education
• Arduino UNO compatible board(ATmega320p based Seeeduino Lotus) + 10 most commonly used Arduino modules
• 74 Page PDF wiki + 12 step by step project tutorials
• Super friendly to beginner and STEAM education
• Compatible with over 300 Grove modules