|
| 1 | +--- |
| 2 | +title: Installing Modules |
| 3 | +description: Learn how to install and remove external modules on your Arduino board. |
| 4 | +author: Karl Söderby |
| 5 | +micropython_type: basics |
| 6 | +hero_image: "./hero-banner.png" |
| 7 | +--- |
| 8 | + |
| 9 | +Your MicroPython installation comes with a set of modules built-in to the firmware. If you are using any external components such as sensors, displays or neopixels, you will need to install these manually. |
| 10 | + |
| 11 | +There are currently two methods available when installing a module on your board running MicroPython: |
| 12 | +- Using the `mip` module on your **board**, (download and install via Wi-Fi® connection), |
| 13 | +- using `mpremote` on your **computer** (download and install through a USB connection), |
| 14 | + |
| 15 | +In this article, we will cover these two methods, as well as how to remove them from your board. |
| 16 | + |
| 17 | +## Hardware & Software Needed |
| 18 | + |
| 19 | +- [A MicroPython compatible board](/micropython/basics/board-installation#supported-boards), |
| 20 | + |
| 21 | +- [Arduino Lab for MicroPython editor](https://labs.arduino.cc/en/labs/micropython), |
| 22 | +- [mpremote](https://pypi.org/project/mpremote/) (optional). |
| 23 | + |
| 24 | +## Option 1: MIP |
| 25 | + |
| 26 | +***Please note that the `mip` module requires a stable Internet connection via Wi-Fi. Installation may fail if connection is unstable.*** |
| 27 | + |
| 28 | +[mip](https://docs.micropython.org/en/latest/reference/packages.html#installing-packages-with-mip) is a module that allows you to install external packages/libraries/modules remotely. This module is built in to your MicroPython firmware. |
| 29 | + |
| 30 | +To use the `mip` module, you will however need to connect to Internet via a Wi-Fi network first. To do so, open the **Arduino Lab for MicroPython editor**, and run the following code: |
| 31 | + |
| 32 | +***Note: Replace "YOUR_NETWORK_NAME" and "" YOUR_NETWORK_PASSWORD" with the SSID and password for your Wi-Fi® network.*** |
| 33 | + |
| 34 | + |
| 35 | +```python |
| 36 | +import network |
| 37 | + |
| 38 | +WIFI_NETWORK='YOUR_NETWORK_NAME' |
| 39 | +WIFI_PASSWORD='YOUR_NETWORK_PASSWORD' |
| 40 | + |
| 41 | +wlan = network.WLAN(network.STA_IF) |
| 42 | +wlan.active(True) |
| 43 | +wlan.connect(WIFI_NETWORK, WIFI_PASSWORD) |
| 44 | + |
| 45 | +print() |
| 46 | +print("Connected to ",WIFI_NETWORK) |
| 47 | +``` |
| 48 | + |
| 49 | +Once you are connected, you can use the `mip` module to install external modules. |
| 50 | + |
| 51 | +You can install by specifying the **organisation** and **repository**: |
| 52 | + |
| 53 | +```python |
| 54 | +import mip |
| 55 | +mip.install(github:org/repo) |
| 56 | +``` |
| 57 | + |
| 58 | +Or you can specify the url to the file you want to install: |
| 59 | + |
| 60 | +``` |
| 61 | +mip.install("https://raw.githubusercontent.com/tinypico/tinypico-micropython/master/lis3dh%20library/lis3dh.py") |
| 62 | +
|
| 63 | +``` |
| 64 | + |
| 65 | +Files are added to a folder named `lib` on your board. |
| 66 | + |
| 67 | +***There are a number of ways you can use the `install()` method, read more about this in the [MIP documentation](https://docs.micropython.org/en/latest/reference/packages.html#installing-packages-with-mip).*** |
| 68 | + |
| 69 | +### Complete Example |
| 70 | + |
| 71 | +In this example, we first connect to Wi-Fi®, and then proceed to install the `[arduino-iot-cloud-py](https://github.com/arduino/arduino-iot-cloud-py) module. |
| 72 | + |
| 73 | +```python |
| 74 | +import network |
| 75 | +import mip |
| 76 | + |
| 77 | +# enter wi-fi creds |
| 78 | +WIFI_NETWORK='YOUR_NETWORK_NAME' |
| 79 | +WIFI_PASSWORD='YOUR_NETWORK_PASSWORD' |
| 80 | + |
| 81 | +# connect to wi-fi |
| 82 | +wlan = network.WLAN(network.STA_IF) |
| 83 | +wlan.active(True) |
| 84 | +wlan.connect(WIFI_NETWORK, WIFI_PASSWORD) |
| 85 | + |
| 86 | +print() |
| 87 | +print("Connected to ",WIFI_NETWORK) |
| 88 | + |
| 89 | +# install the arduino-iot-cloud module |
| 90 | +mip.install("github:arduino/arduino-iot-cloud-py") |
| 91 | +``` |
| 92 | + |
| 93 | +***Running this example twice will result in a `202` error, as you have already connected to Wi-Fi. Once you have connected once to Wi-Fi, you only need to use the `mip.install()` method.*** |
| 94 | + |
| 95 | +### Failed Installation |
| 96 | + |
| 97 | +Installation via `mip` may fail due to an unstable Internet connection. If you have installed a module but you are receiving errors, make sure your Internet connection is good (your board is within reach of your router), and run the installation again. |
| 98 | + |
| 99 | +This is typically not an issue with smaller installations (like single files), but when installing larger packages it is increased. |
| 100 | + |
| 101 | +You can install the same module again, it will only overwrite the existing version. |
| 102 | + |
| 103 | +## Option 2: Mpremote |
| 104 | + |
| 105 | +To install a MicroPython module on your board, you can use the Python based tool `mpremote`. This requires Python to be installed. On macOS and Linux Python usually comes pre-installed. If it's not installed on your system you may download it from [here](https://www.python.org/downloads/). Then, to install `mpremote` you can use pip: |
| 106 | + |
| 107 | +```bash |
| 108 | +$ pip install mpremote |
| 109 | +``` |
| 110 | + |
| 111 | +Run `mpremote connect list` to retrieve the serial number of your device. The output will look similar to this: |
| 112 | + |
| 113 | +``` |
| 114 | +/dev/cu.usbmodem3871345733302 335B34603532 2341:055b Arduino Portenta Virtual Comm Port in HS Mode |
| 115 | +``` |
| 116 | + |
| 117 | +Pass this serial number (the second value) to the install command: |
| 118 | + |
| 119 | +```bash |
| 120 | +$ mpremote connect id:335B34603532 mip install github:arduino/arduino-iot-cloud-py |
| 121 | +``` |
| 122 | + |
| 123 | +This will install the library and all required dependencies on the board. |
| 124 | + |
| 125 | +### Error: Certificate Verify Fail (MacOS) |
| 126 | + |
| 127 | +On some computers, you may receive error: |
| 128 | + |
| 129 | +``` |
| 130 | +[SSL: CERTIFICATE_VERIFY_FAILED] certificate verify failed: |
| 131 | +unable to get local issuer certificate (_ssl.c:1002) |
| 132 | +``` |
| 133 | + |
| 134 | +This indicates a problem with the Python version installed, and that it is unable to locate the SSL certificate. To work around this, navigate to your Python installation (typically **Applications > Python 3.X**), and run the `Install Certificates.command` script. |
| 135 | + |
| 136 | + |
| 137 | + |
| 138 | +## Delete Files |
| 139 | + |
| 140 | +To delete a file from your board, open the **Arduino Lab for MicroPython** editor, connect to your board, and click the **"File"** button. This will open your local files as well as your board's files. |
| 141 | + |
| 142 | +If you want to remove a file, simply mark it and click on the trashcan icon in the top right of the file window, as the image below shows: |
| 143 | + |
| 144 | + |
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