Use the Arduino MKR ENV Shield on a Raspberry Pi

Solder Wire, Lead Free

Mini Side Cutter, 120mm Length with 25mm Jaw Capacity

Arduino MKR Zero

PiMKRHAT

Arduino MKR ENV Shield

Soldering iron (generic)

<a href="https://www.hwhardsoft.de/english/projects/pimkrhat/">PiMKRHAT</a> is an adaptor to use Arduino MKR boards and shields together with the Raspberry Pi. Different Arduino MKR Shields can be used via our HAT as extension for the Raspberry Pi. I want to show in this small project how to use the Arduino MKR ENV shield with a Raspberry Pi under Python.<div id="gallery"><img id="gallery" src=https://projects.arduinocontent.cc/495500e0-5dbc-4609-abf0-04a208cdc5db.jpg /><figcaption>PiMKRHAT</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/a5828235-5371-4998-ab24-bc867a2e852b.jpg /><figcaption>PiMKRHAT with Pi4</figcaption><img id="gallery" src=https://projects.arduinocontent.cc/98be7e7d-4319-4d74-b129-1d564898996a.jpg /><figcaption>PiMKRHAT with stacked MKR Shield</figcaption></div><h3 >Hardware</h3>The PiMKRHAT comes as kit. You have to assemble it first. Please follow the attached assembly instruction<figure><img src=https://projects.arduinocontent.cc/1a63ff62-6ff5-4bac-a0d8-76906a7c5e79.jpg /><figcaption>PiMKRHAT kit</figcaption></figure><h3 >Jumper setting</h3>Please set for the Arduino MKR ENV shield only the 5V and 3, 3V Jumper on the Power jumper bank. Leave all other jumpers open.<h3 >Raspbian</h3>Please download the latest <a href="https://www.raspberrypi.org/downloads/raspbian/">Raspbian OS</a> for the Raspberry Pi and copy it to an SD card via <a href="https://downloads.raspberrypi.org/imager/imager.exe">Pi imager</a><h3 >Configuring I2C</h3>The sensors on the MKR ENV shield are using I2C communication. You have to install some libraries first via the bash:<pre ><code >sudo apt-get install -y python-smbus sudo apt-get install -y i2c-tools </code></pre>Now you have to enable the I2C interface:<pre ><code >sudo raspi-config --> 5 Interfacing Options --> P5 I2C--> YES sudo reboot </code></pre><h3 >Testing I2C</h3>Now it's time to test the I2C interface:<pre ><code >sudo i2cdetect -y 1 </code></pre><figure><img src=https://projects.arduinocontent.cc/459456a6-bd87-4959-88d8-f5987b06939a.jpg /><figcaption> </figcaption></figure>This shows that two I2C addresses are in use – 0x10, 0x5c and 0x5f<h3 >Install additional libraries</h3><pre ><code >sudo apt install python-pip sudo pip install veml6075 </code></pre><h3 >Test</h3><figure><img src=https://projects.arduinocontent.cc/e219df3c-d3ef-4bcd-99d0-5f4d011dbdbb.jpg /><figcaption>test of HTS221</figcaption></figure>3 little Python programs are available to test the UV radiation, temperature & humidity and pressure sensor of the MKR ENV shield:<a href="http://hts221.py/">HTS221.py</a> -temperature and humidity<a href="http://lps22hb.py/">LPS22HB.py</a> - pressure<a href="http://veml6075.py/">VEML6075.py</a> - UV radiation The analogue light sensor requires an analogue input and can not be used with the Raspberry Pi.

Use the Arduino MKR ENV Shield on a Raspberry Pi

Connect the Arduino MKR ENV shield with a Raspberry Pi and use the shield under Python.