Mervis on Unipi Neuron / 1.1

If you use a laptop, bear in mind most of the laptops do not feature microSD card slot and will require a suitable SD or USB adapter. A suitable card can be purchased on the Unipi e-shop.

Unipi 1.1

For smooth Mervis OS running on Unipi Neuron and Unipi 1.1, you will need a microSD card with a capacity of at least 2GB. We strongly recommend using industrial SD cards.

The next step is to download the latest version of the image of the OS you selected. An archive with pre-assembled OS is available on this webpage: for Unipi Neuron / for Unipi 1.1.

The next step is to download the BalenaEtcher utility.

Install BalenaEtcher and launch it. In its main menu, click on Select Image and choose the Mervis OS image.

Upon selecting the image, a disk drive selector will enable. Choose the SD card drive.

Finish the process by clicking on Flash!

Maximum caution is necessary during the deploy. If a wrong drive is selected, it may result in a loss of data.

After finishing the deploy your OS will detect new disk drives. As these drives are set up specifically for Mervis OS, your operating system cannot access them and will request their formatting. Close the formatting prompt by clicking on Cancel.

Windows OS will also notify you about the drive being unaccessible. Ignore this message as well.

If the OS image upload was successful, the card will be detected as boot upon its reinserting into the PC. Before inserting it into the controller you can also perform an additional, optional step → enabling the SSH. The easiest method of doing so is to open the boot card root folder and create a text file named ssh.txt or ssh without suffix here.

At this moment, the Mervis OS is safely flashed onto your SD card. Unplug the card from your PC, remove it from the adapter (if you used one) and insert the card into your Unipi controller.

Insert the card ONLY if the controller's power supply is unplugged!

Insert the card with its back up (eg. golden connectors facing up). Plug the power supply in.

With a new SD card, the controller's startup will take more time than usual - approximately 3 minutes. This is due to the necessary OS configuration.

Download the latest version of Mervis from our download section and run the installation package.

The installation process displays the welcome screen, which you can confirm by clicking on Next.

In next dialog, you have to confirm the License agreement and click on Next

In next dialog, we can select parts of Mervis for installation. The IDE is the editor, in which we will create and debug programs for UniPi controller. The Windows RT is a simulator of a controller, if you don't have one. Typically, you will need only the IDE.

In older Mervis version, there was also option for installing HMI editor. In current version, the HMI editor has been merged into IDE.

Last two dialogs are just for confirmation of the installation process and finishing it. Just hit Install and then Finish.