If you find faster, modern and powerful Arduino board, a PRODINo MKR Zero V1 board is for you. You can do with it vary applications, it could be from home projects to industrial use. It also as a great educational tool for learning about 32-bit application development. The board is powered by Atmel’s SAMD21 MCU, which features a 32-bit ARM Cortex® M0+ core.

ProDino MKR Zero V1 Top


The PRODINo MKR Zero V1 has 4 relays. The 4 Relays are a solution for driving high power loads that cannot be controlled by microcontroller’s digital IOs, due to the current and voltage limits of the controller. Each relay provides 2 pole changeover contacts (NO and NC). Relays are useful in switching on/off AC appliances like fan, light, motor or high current DC actuators like solenoid valve etc. Included four LEDs indicate the on/off state of each relay.

ProDino MKR Zero V1 without cover

The 4 digital inputs are isolated. This is helpful for connecting PRODINo MKR Zero V1 to a system with a different ground and different voltage or noisy system. This electrically isolates a controller from the high-power system by use of an opto-isolator IC. This allows the low-voltage side to control a high voltage side. Great for use in noisy circuits where signal lines require electrical isolation. Four LEDs indicate the On/Off state of each input.

ProDino MKR Zero V1 inputs


ProDino MKR Zero V1 outputs


The board contains one GROVE Digital connector. The Grove System simplifies traditional electronics it consists of a base platform and various modules with standardized connectors. Each Grove module addresses a range of functions such as simple LEDs, buttons, switches to complex servo control, etc. With the combination with Grove modules, the project possibilities are endless!

ProDino MKR Zero V1 borad 3D

Thanks that the board owns RS485, now you will be able to have a communication port for your RS485 devices! It will allow up to 32 devices to communicate through the same data line over a cable length of up to 1200m/4000ft. It is and the ultimate expansion that allows your board to connect to almost every legacy industrial system using serial connectivity such as industrial PLCs, controllers, drives and HMIs. 

The RS485 can be use to turn old industrial systems like industrial machinery, heating systems and conveyors into new IoT devices. It supports high speed 500 Kbps in a short distance.

The ProDino MKR Zero V1 contains more a micro USB connector and a reset button.
It is compatible with "Arduino MKR GSM 1400".

Getting started

You can find in the Tutorial section all the information you need to configure your board, use the Arduino Software (IDE), and start tinker with coding and electronics. What you can do with this board see in our Examples.


  • ATSAMD21G18 Microprocessor, 32-Bit ARM Cortex® M0+
  • 1 x GROVE connector
  • 4 Relays Output
  • Pluggable connectors 
  • 4 Optical Isolated Inputs 
  • RS485 port 
  • Switching Regulators power supply
  • Arduino MKR GSM1400 compatible


  • mP, DC Current per I/O Pin 7 mA
  • Clock speed 48 MHz  
  • SRAM 32 KB
  • 256 KB Flash Memory
  • RS485 speed 500 Kbps (short distance)
  • Optical isolated digital Inputs: 4 (working voltage 3-30 V, On arrives form 3 V)
  • Relay outputs: 4 (maximum voltage/current 250V/5A)
  • Input Voltage: (Vin) 8 - 30 V
  • Dimension: 70 mm X 92 mm X 32 mm
  • Weight: 125 g
ProDino MKR Zero V1 board front

Additional connectors

J10 Grove Digital (External)



  • 1  GROVE_D0 - Primary digital Input/Output D12_I2C_SCL
  • 2  GROVE_D1 - Primary digital Input/Output D11_I2C_SDA
  • 3  Vcc  - Grove module powers 3,3 V
  • 4  GND  - Ground

J14 (internal)

ProDino MKR Zero V1 J14 connector diagram
  • 1  5V
  • 2  GND
  • 3  3.3V
  • 4  GSM_CTS
  • 5  GSM_RTS
  • 6  GSM_RX
  • 7  GSM_TX
  • 8  GSM_DTR
  • 10  ADC_VBAT
  • 11  PMIC_IRQ

What does the board consume?


All relays off

All relays on

8 V

0.010 A

0.200 A

12 V

0.007 A

0.150 A

24 V

0.005 A

0.074 A

Isolated inputs when On state

1.5 V - 0.3 mA

5 V - 0.6 mA

12 V - 1.0 mA

24 V - 1.5 mA

Other devices from the series