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====== Mobile transmission with a π-box V-2 ======

How to set a mobile transmission with a V-2
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===== Prerequisites =====


What you will need

  * π-box V-2
  * battery, such as: https://www.kubii.fr/14-chargeurs-alimentations-raspberry/1670-power-bank-li-polymer-15-000-mah-555-wh-kubii-3272496005013.html
  * antenna
  * sound source, such as an audio recorder (Zoom V4-pro, tascam, etc...). Here we will use a Zoom H4 Pro, that can be used also as a sound card https://www.zoom-na.com/products/field-video-recording/field-recording/zoom-h4n-pro-handy-recorder
   * a smartphone that can create Hotspots

So with all that you can have : a mobile π-box on battery, connected to a mobile hotspot, a battery powered microphone ! all the functions of the π-box can be used : radio, streaming, etc ...

===== Prepare and set up the mobile transmission =====

==== Prepare your antenna ====

Prepare an antenna you can carry with you.
Connect it to the π-box as usual (GPIO4 + ground).

==== Prepare your sound source ====

In this example, we will use a Zoom H4.

Start the Zoom. Connect it to the usb sound card, or use it as a usb sound card of the π-box.

==== Start a hotspot ====

Start a hot spot with your smartphone or 3G/4G modem.

==== Connect the π-box to the battery ====

It will start the π-box. You can now connect to the access point of the π-box and sets the audio routing, and the wifi, by indicating in the good fields the WiFi ssid and password.

===== Done ! =====


You can now test on your computer to see if you receive the stream, or with a radio to see if you receive the signal on the FM !

Now you're ready for a mobile transmission ! ideal for the countryside, mountains or demonstrations !

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