
Overview
The MKR Proto Large Shield fits onto your MKR board using its provided female/male headers and enables you to fix it wherever you want with the mounting holes. This shield features a larger prototyping area with more than 300 solder points and makes connecting components to your board super simple, thanks to the silk that indicates the MKR board pins location
Tech specs
Digital I/O Pins | 21 |
PWM Digital I/O Pins | depending on the board |
Analog Input Pins | 7 |
Analog Output Pins | depending on the board |
DC Current per I/O Pin | depending on the board |
DC Current for 3.3V Pin | depending on the board |
DC Current for 5V Pin | depending on the board |
Lenght | 80 mm |
Width | 50 mm |
Weight | 19 gr |
Conformities
Resources for Safety and Products
Manufacturer Information
The production information includes the address and related details of the product manufacturer.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
https://www.arduino.cc/
Responsible Person in the EU
An EU-based economic operator who ensures the product's compliance with the required regulations.
Arduino S.r.l.
Via Andrea Appiani, 25
Monza, MB, IT, 20900
Phone: +39 0113157477
Email: support@arduino.cc
Documentation
OSH: Schematics
The MKR Large Proto Shield is open-source hardware! You can build your own board using the following files:
EAGLE FILES IN .ZIP SCHEMATICS IN .PDFGet Inspired
This project detects water leak and records the temperature and humidity reading at the time of leak and sends it to the Adafruit cloud.

By popular demand, we are pleased to announce that it’s now possible to buy the Arduino MKR IoT Carrier. Originally forming a key part of the Arduino Oplá IoT Kit, we’ve responded to our community to make the carrier available on its own, thus enabling you to benefit from having a bunch of sensors, actuators, and a display all featured on the one board — making it quicker and easier to take your IoT projects to the next level. Featuring a large set of built-in sensors and actuators as well as a useful color display, the carrier lets you focus on prototyping your IoT ideas right away by saving on the hassle of wiring and soldering these components. The carrier can become a WiFi, LoRa, NB-IoT or GSM-compatible device by seamlessly connecting to any MKR family board. Building a user interface for these boards is easy with the embedded color OLED screen, five capacitive touch buttons, and the five RGB LEDs. The integrated sensors (temperature, humidity, pressure, RGBC light, gesture and proximity) allow you to map the environment around the carrier, and should you need to capture any other data there are over 100 additional Grove sensors that can easily be connected directly to the carrier. Here’s are quick demo of the carrier's capabilities! (Special shout out to Mirko Pacioni and Filo Connesso for creating this demo.) Capture and store all the data locally on an SD card, or connect your MKR family board to the IoT Cloud for real-time data captured, storage, and visualization. The MKR IoT Carrier features: Round OLED displayFive RGB LEDsFive capacitive touch buttonsOn-board sensors (temperature, humidity, pressure, RGBC light, gesture and proximity)BuzzerIMU (Three-axis accelerometer sensor and three-axis gyroscope sensor)Two 24V relaysMicroSD card holder (SD card not included)Plug-and-play Grove connectors for external sensors — two analog and one digital (I2C)18650 Li-ion rechargeable battery holder (battery not