====== Preparation and access to the unit ======
Before the first startup, it is necessary to insert an SD card with a flashed OS into the unit. \\
** Instructions for flashing the OS can be found [[en:hw:03-unipi11:image|on this link]].**

After startup, the unit processes the uploaded program and the Mervis HMI website and other Mervis services communicating with the unit are also available. The device will startup fully a few seconds after the power supply is plugged in, it may take even longer for the first startup. 


{{page>mdns-hidden}}


===== First connection of the unit =====
Unipi 1.1 unit must be powered by [[https://www.unipi.technology/power-supply-for-din-rail-5v-dc-2-4a-p65?categoryId=19| 5 V⎓ power supply]]. To access the introductory HMI web page, it is necessary to connect to the unit from a computer or tablet, with any modern web browser. 

<WRAP center round info 90%>
For the **programming** option, it is necessary to connect to the unit from a computer with the MS Windows 10 operating system or higher with the Mervis IDE installed. The installation procedure is described [[#installation_of_mervis|below]].
</WRAP>



==== Connection via local network with DHCP server ====
Despite its somewhat complex name, this approach is a simple and most commonly used variant. All you have to do is connect the unit to a computer network using an Ethernet cable and connect a computer or tablet (either via an Ethernet cable or Wi-Fi) to the same network. Your DHCP server (router or Wi-Fi router) on this network will automatically assign an IP address to both of them from the available range.

The IP address of the unit can be found either from a DHCP server or by a suitable program to scan the network (such as [[en:files:software:tools:advanced-ip-scan-hidden|Advanced IP Scanner]]). **In most cases, however, an [[#mdns_record|mDNS address variant]] will suffice.**

;#;
//The IP addresses used are only examples.//
;#;
{{ :en:hw:connecting_to_unipi_neuron-lan.png?direct |}}


==== Direct connection ====
A direct connection requires the physical connection of the computer and unit with an Ethernet cable. Because this solution does not include a DHCP server, both the computer and the unit automatically assign itself a random IP address from the range 169.254.XXX.XXX.

You can find the IP address of the unit with a suitable program for scanning the network (such as [[en:files:software:tools:advanced-ip-scan-hidden|Advanced IP Scanner]]). **In most cases, however, an [[#mdns_record|mDNS address variant]] will suffice.**

;#;
//The IP addresses used are only examples.//
;#;
{{ :en:hw:connecting_to_unipi_neuron-direct.png?direct |}}