====== Drive the OnAirScreen ON AIR LED from Myriad Playout ======

[[https://www.myriad.radio/myriad-playout-7|Myriad Playout]] can turn OnAirScreen **LED1** (factory label **ON AIR**) when the **Broadcast Radio Hardware Service** sees a mixer fader / channel-start / on-air **input**, by running a Command that HTTP-GETs OnAirScreen.

This is **not** the current-title howto. Titles: [[onairscreen:myriad-en|Show the current Myriad Playout title on OnAirScreen]].

API reference: [[oas:api|OnAirScreen API / UDP / HTTP / MQTT]]\\
Mixer GPI on a Raspberry Pi (no playout in between): [[onairscreen:manual-en|User Manual]] (GPIO)\\
Myriad: [[https://help.broadcastradio.com/support/solutions/articles/101000535070|Hardware Service]], [[https://help.broadcastradio.com/support/solutions/articles/101000535035|Remote.HttpGet in Commands]], [[https://help.broadcastradio.com/support/solutions/articles/101000540229|DHD console]]

===== Two different “on air” signals =====

^ Signal ^ What it is ^ Use for LED1? ^
| Hardware input (fader / channel start / mic live) | Desk tally into Hardware Service | **Yes** — this is the studio lamp |
| Myriad **On Air Control** | This PC is the on-air studio / switcher | Only if the lamp should follow **studio take-over**, not the mic |

DHD Ember+ can also expose **Mic Live** into Playout (v6.5+); treat that as the mixer signal, not On Air Control. [[https://help.broadcastradio.com/support/solutions/articles/101000540229|DHD]]

===== What OnAirScreen expects =====

^ Channel ^ Target (default) ^ Example ^
| HTTP | Port **8010** | ''http://OAS-IP:8010/?cmd=LED1:ON'' |
| UDP | Port **3310** | ''LED1:ON'' |

Same pattern for off: ''LED1:OFF''.

On **Windows** test with ''oas_send.exe'' from the OnAirScreen license:

<code>
oas_send.exe --ip 192.168.23.5 "LED1:ON"
oas_send.exe --ip 192.168.23.5 "LED1:OFF"
</code>

If OnAirScreen runs on **the same PC**, use ''127.0.0.1''. Firewall: TCP **8010**.

===== Recommended path: Hardware input to Command to HTTP GET =====

Myriad Commands can call ''Remote.HttpGet("...")'' (same mechanism as the BR Encoder howto). Hardware inputs can trigger Favourites / commands.

**1.** Create two **Command** media items (Edit, type Command):

LED1 on:

<code>
Remote.HttpGet("http://192.168.23.5:8010/?cmd=LED1:ON")
</code>

LED1 off:

<code>
Remote.HttpGet("http://192.168.23.5:8010/?cmd=LED1:OFF")
</code>

Put them on the Media Wall or as **Favourites** so Hardware Settings can fire them. [[https://help.broadcastradio.com/support/solutions/articles/101000535035|HttpGet example]]

**2.** **Settings → Hardware Settings**: Hardware Service running, device list refreshed. In the **input** section, map the mixer line (fader start, channel on, or the input you use for mic live):

  * Line **set** / on → Favourite or command **LED1 on**
  * Line **clear** / off → **LED1 off**

[[https://help.broadcastradio.com/support/solutions/articles/101000535070|Hardware inputs can trigger Favourites and On Air status]]

Use the **input** mapping (desk to Myriad), not a Hardware **Event** in the log (that drives an **output** on the switcher).

===== Option B — Hardware Service 6 line script =====

Hardware Service **6** can run a script when a line is triggered (**Configuration** → device → line → **Script**). Use that if your version can call the same Command / Favourite from the script, or to add conditions (time of day). The script editor is JavaScript on the service, not the Playout Command language — keep the HTTP GET on the Command item above unless your script host documents an HTTP call. [[https://help.broadcastradio.com/support/solutions/articles/101000534860|Scripts on hardware line triggers]]

===== Notes =====

  * OCP HTTP Get is for **NOW/NEXT** titles, not lamps.
  * Raspberry Pi with a desk contact: GPIO in the [[onairscreen:manual-en|User Manual]] is shorter than Hardware Service.
  * Questions: [[https://www.astrastudio.de/kontakt/|Contact]]

===== Other LED howtos =====

[[onairscreen:mairlist-led-en|mAirList]] · [[onairscreen:proppfrexx-led-en|ProppFrexx]] · [[onairscreen:myriad-led-en|Myriad Playout]] · [[onairscreen:playoutone-led-en|PlayoutONE]] · [[onairscreen:rodecaster-pro-ii-led-en|RØDECaster Pro II (MIDI)]]

Titles: [[onairscreen:mairlist-en|mAirList]] · [[onairscreen:radioboss-en|RadioBOSS]] · [[onairscreen:radiodj-en|RadioDJ]] · [[onairscreen:playoutone-en|PlayoutONE]] · [[onairscreen:stationplaylist-en|StationPlaylist]] · [[onairscreen:proppfrexx-en|ProppFrexx]] · [[onairscreen:myriad-en|Myriad Playout]] · [[onairscreen:zetta-en|RCS Zetta]]