user34182: I am working on a project (the scenario is depicted in the attachment) involving Bluetooth Low Energy (BLE). As a master (central device) I am using the Adafruit nRF52 feather board (https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/introduction) and as slaves (peripheral devices) a pair of Adafruit nRF8001 modules (https://learn.adafruit.com/getting-started-with-the-nrf8001-bluefruit-le-breakout/pinouts?view=all#introduction). Moreover, I have to wire the nRF52 up with an Arduino Uno rev3.
I am trying to set up the very initial communication between central and peripheral devices, but if I even try to upload the blinky sketch into the nRF52 board the compiling phase returns to me the following error: 

exec: "nrfutil": executable file not found in $PATH

Does anyone have an idea what it means? I googled a lot but I am not able to figure it out on this problem.
Thanks in advance to anyone would be able to help me!
Filippo

[EDIT] Solved: just need to install the nfrutil first, as written in https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup#nrfutil-os-x-and-linux-only

user52226: Step 2 solves this problem:
https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup
Also, read up about how to add something to Path Variable on Windows. 

34182: <p>I am working on a project (the scenario is depicted in the attachment) involving Bluetooth Low Energy (BLE). As a master (central device) I am using the Adafruit nRF52 feather board (<a href="https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/introduction" rel="nofollow noreferrer">https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/introduction</a>) and as slaves (peripheral devices) a pair of Adafruit nRF8001 modules (<a href="https://learn.adafruit.com/getting-started-with-the-nrf8001-bluefruit-le-breakout/pinouts?view=all#introduction" rel="nofollow noreferrer">https://learn.adafruit.com/getting-started-with-the-nrf8001-bluefruit-le-breakout/pinouts?view=all#introduction</a>). Moreover, I have to wire the nRF52 up with an Arduino Uno rev3.</p>

<p>I am trying to set up the very initial communication between central and peripheral devices, but if I even try to upload the blinky sketch into the nRF52 board the compiling phase returns to me the following error: </p>

<blockquote>
  <p>exec: "nrfutil": executable file not found in $PATH</p>
</blockquote>

<p>Does anyone have an idea what it means? I googled a lot but I am not able to figure it out on this problem.</p>

<p>Thanks in advance to anyone would be able to help me!</p>

<p>Filippo</p>

<p><a href="https://i.stack.imgur.com/j0kXS.png" rel="nofollow noreferrer"><img src="https://i.stack.imgur.com/j0kXS.png" alt="enter image description here"></a></p>

<p><strong>[EDIT]</strong> Solved: just need to install the nfrutil first, as written in <a href="https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup#nrfutil-os-x-and-linux-only" rel="nofollow noreferrer">https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup#nrfutil-os-x-and-linux-only</a></p>
 52226: <p>Step 2 solves this problem:</p>

<p><a href="https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup" rel="nofollow noreferrer">https://learn.adafruit.com/bluefruit-nrf52-feather-learning-guide/arduino-bsp-setup</a></p>

<p>Also, read up about how to add something to Path Variable on Windows. </p>
