onairscreen:rodecaster-pro-ii-led-en [astrastudio wiki]

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====== Drive the OnAirScreen ON AIR LED from a RØDECaster Pro II ======

The [[https://rode.com/en-us/products/rodecaster-pro-ii|RØDECaster Pro II]] can turn OnAirScreen **LED1** (factory label **ON AIR**) over **USB MIDI**. No playout software in between.

This is the mixer itself. Playout GPI howtos (mAirList, ProppFrexx, Myriad, PlayoutONE) are a different path. MIDI settings: [[onairscreen:manual-en|User Manual]] (GPIO → MIDI).\\
RØDE: [[https://help.rode.com/hc/en-us/articles/8565481010063-MIDI-Triggers-for-R%C3%98DECaster-Pro-II-Duo|MIDI triggers]], [[https://rode.com/en-us/user-guides/rodecaster-pro-ii/using-the-smart-pads|SMART Pads]], [[https://rode.com/en-us/user-guides/rodecaster-pro-ii/using-the-rodecaster-app|RØDECaster App]]

===== What the mixer actually sends =====

^ Signal ^ What MIDI carries ^ Use for LED1? ^
| Fader **mute** button | CC **27**, value **1** while the button is held, **0** when released. Channel = fader (1–6) | **Yes** — one press flips the lamp. MIDI does **not** say whether the channel is muted |
| SMART Pad, On and Off | Your CC or Note: On while pressed, Off when released | **Yes** — the lamp follows the finger on the pad |
| SMART Pad, On only (factory pads) | One On message per press, no Off | Only with **Toggle** (tap on, tap off) |
| Record / Listen / channel select | Other CCs (record is CC 17) | No |

The red mute button on the caster latches. The MIDI message does not. It only reports the finger. A mute from the touchscreen does not move the lamp. OnAirScreen also does not know the mute state at startup.

RØDE’s map lists mute as CC 27, value 1, channels 1–6 ([[https://help.rode.com/hc/en-us/articles/8565481010063-MIDI-Triggers-for-R%C3%98DECaster-Pro-II-Duo|MIDI control reference]]). The same press/release pattern (1, then 0) is how the REC button is documented. Value **1** is below OnAirScreen’s default CC threshold of **64**, so the row stays dark until Threshold is **1**.

===== Connect =====

**1.** Plug **USB 1** into the computer that runs OnAirScreen. MIDI stays on that USB port. It does not cross the network to another machine.

**2.** In the [[https://rode.com/en-us/user-guides/rodecaster-pro-ii/using-the-rodecaster-app|RØDECaster App]], open the unit → **Device Configuration → System** and turn **MIDI** on. The switch is stored on the caster.

**3.** OnAirScreen: **Settings → GPIO → MIDI** (same fields in the Web UI). Tick **Enable MIDI**, refresh the interface list, and pick the caster. RØDE’s docs call that port **RØDECaster Pro MIDI** (USB 1) or **MIDI Function**. Use the name that appears. **Apply**.

===== Mute button → LED1 =====

Host mic on the left-hand fader. One row:

^ Field ^ Value ^
| Name | ''MIC'' |
| On | ticked |
| Channel | **1** (fader 1). Fader 2 is channel 2, up to fader 6 on channel 6 |
| Type | **CC** |
| Number | **27** |
| Threshold | **1** |
| Behavior | **Toggle** |
| Invert | off (ignored for Toggle) |
| Action | **LED1** |

Or press **Learn** on that row and tap the mute button within 10 seconds. Learn fills channel, type, and number. It does not change Threshold or Behavior — set those to **1** and **Toggle** yourself.

**Apply**, then tap mute once. Each press sends ''LED1:TOGGLE''. The release (value 0) does not press again.

The lamp and the red mute light can drift apart: a mute on the screen, or OnAirScreen starting while the mic is already muted, leaves them different. Tap the mute button once to line them up, or click LED1 / press <key>1</key>.

Optional: add **AIR1** on the same row if the mic timer should start and stop with that button. It toggles on the same press, with the same drift.

A second physical mic is another row (channel 2, still CC 27, Threshold 1, Toggle). Point it at **LED2**, or at LED1 if that second button should flip the same lamp. Two Toggle rows do not mean “on while either mic is open”. **Toggle** is not a Logic input.

===== SMART Pad, when the lamp should follow a level =====

Use this when LED1 must stay on for as long as a control is held, or when several mics should share one lamp through **Logic**.

In the pad setup, set the action to MIDI → **Custom** ([[https://rode.com/en-us/user-guides/rodecaster-pro-ii/using-the-smart-pads|SMART Pads]]):

  * Type **CC** or **Note**
  * A number that is not the mute CC you already use
  * **On and Off** — On when pressed, Off when released
  * On value **127** (any value at or above the OnAirScreen threshold)

OnAirScreen row: **Learn** while you press the pad, Behavior **On/Off**, Threshold **64** (or **1** if that pad’s On value is 1). Action **LED1**. **Apply**. The lamp is on only while the pad is down.

Factory pads send an On-only CC on channel 1 (pad 1 of bank 1 is CC 0, then 1, 2, …). That has no Off, so Behavior **On/Off** would turn the lamp on and leave it on. For a tap-on / tap-off pad, use **Toggle** instead.

Several held pads → one lamp: set each of those rows to **On/Off**, leave Action empty, and on **Settings → GPIO → Logic** add a rule **OR** with those MIDI inputs and output **LED1**. Only **On/Off** rows show up there.

===== Notes =====

  * RØDECaster **Duo** uses the same mute CC 27, on channels 1–4.
  * Debounce (default 20 ms) only groups Oneshot and Toggle bursts. Leave it.
  * Two enabled rows on the same channel, type, and number both fire, and the MIDI tab warns.
  * 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]]