Wireless Display Setup with Info-Beamer on Raspberry Pi – Q&A

Q: Can I connect multiple wireless displays to a Raspberry Pi running Info-Beamer?

A: Yes, but with some limitations. Here's what you need to know:

✔ Possible Wireless Display Options:

1. Miracast (Best for Android/Windows Displays)

   • Requires: miraclecast (Linux-compatible software)

   • Works with most modern smart TVs and wireless dongles

   • Latency: Medium (~100-300ms)

2. AirPlay (For Apple Displays)

   • Requires: shairport-sync or RPiPlay

   • Works with Apple TVs and AirPlay-compatible displays

   • Latency: Medium-High (~200-500ms)

3. Chromecast (Google Cast)

   • Requires: info-beamer to stream via browser tab casting

   • Works with Chromecast dongles or built-in TV support

   • Latency: High (~500ms-1s)

Q: What are the technical limitations?

A: Key challenges with wireless displays on Raspberry Pi:

⚠️ Performance Constraints:

• Max 2-3 displays before lag becomes noticeable (Pi 4 recommended)

• HD resolution (1080p) only – 4K is too demanding

• Wi-Fi congestion may cause stuttering (use 5GHz band if possible)

🔌 Required Setup:

• Raspberry Pi 4 (2GB+ RAM recommended)

• Strong, dedicated Wi-Fi network (no shared/public networks)

• Wireless displays must support Miracast/AirPlay/Chromecast

Q: How do I set this up with Info-Beamer?

Option 1: Miracast (Linux-Compatible)

1. Install miraclecast:

   
   

   sudo apt install miraclecast

2. Pair displays via Wi-Fi Direct

3. Configure Info-Beamer to output to virtual display

Option 2: AirPlay (For Apple Devices)

1. Install RPiPlay:

   git clone https://github.com/FD-/RPiPlay.git
   cd RPiPlay && ./build.sh

2. Run as background service:

   ./rpiplay -n "Info-Beamer Display"

3. Cast from iOS/macOS devices

Option 3: Chromecast (Simplest but Higher Latency)

1. Use info-beamer's web interface

2. Cast Chrome tab to Chromecast devices

3. Limited to browser-based content

Q: What’s the most reliable wireless solution?

Recommendation:

• For lowest latency → Miracast

• For Apple devices → AirPlay

• For simplicity → Chromecast

Q: Any alternatives if wireless isn’t stable enough?

A: If reliability is critical, consider:

1. HDMI over IP (wired Ethernet-based solution)

2. Long HDMI cables + splitters (zero latency)

3. Dedicated media players (BrightSign, etc.)