BATC HDMI Source - Revision history

G8GKQ: /* Operation */

2023-04-11T20:00:58Z

Operation

G8GKQ: /* Audio */

2023-04-11T19:52:22Z

Audio

G8GKQ: /* Camera Sources */

2023-04-11T19:51:53Z

Camera Sources

G8GKQ: /* Operation */

2023-04-11T19:50:59Z

Operation

G8GKQ: /* Software Build */

2023-04-11T19:50:10Z

Software Build

G8GKQ: /* Construction */

2023-04-11T19:49:04Z

Construction

G8GKQ: /* Camera Sources */

2023-04-11T19:33:47Z

Camera Sources

G8GKQ: /* Operation */

2023-04-11T19:25:29Z

Operation

G8GKQ at 18:39, 11 April 2023

2023-04-11T18:39:13Z

G8GKQ: Created page with "The BATC HDMI Video source is designed to allow selected WebCams and Raspberry Pi Cameras to be used with HDMI-input video mixers. It also provides a source of HDMI Test card..."

2023-04-11T17:06:44Z

Created page with "The BATC HDMI Video source is designed to allow selected WebCams and Raspberry Pi Cameras to be used with HDMI-input video mixers. It also provides a source of HDMI Test card..."

New page

The BATC HDMI Video source is designed to allow selected WebCams and Raspberry Pi Cameras to be used with HDMI-input video mixers. It also provides a source of HDMI Test cards and some HDMI diagnostic information. It is based on a Raspberry Pi 3B, but should work on the Raspberry Pi 2 and 1. It has not been tested on the Raspberry Pi Zero or Raspberry Pi 4.

[[File:HDMI_Source_1.jpg|400px]]

@@ Line 23: / Line 23: @@
   Original (H264-capable) Logitech C920
   Polycom Eagleeye USB Webcam
   EasyCap video composite video
   Raspberry Pi Camera

@@ Line 40: / Line 40: @@
 ===Audio===
-Although planned, there is no audio functionality yet.
+Although planned, there is no audio functionality yet.  Webcam and EasyCap audio is not relayed.
 ===Configuration===

@@ Line 35: / Line 35: @@
 * The early (H264-capable) C920  webcam.  The subsequent 2 versions of the C920 are NOT supported.
 * The Polycom Eagleeye webcam.  Two of these can be connected, and individually selected.
-* An Easycap for composite video capture.  Both the Portsdown-compatible USBTV-007 version and the non-compatible MS210x versions are supported.
+* An Easycap for composite video capture.  Both the Portsdown-compatible USBTV-007 version and the non-compatible MS210x versions (sold by the BATC Shop) are supported.
 * Raspberry Pi Cameras version 1, 2 and HQ.

@@ Line 26: / Line 26: @@
   Raspberry Pi Camera
-Each time the button is pressed, the next camera will be selected.
+Each time the button is pressed, the next camera will be selected.  Hot plugging of webcams (but not the Pi Cam) is supported
 A long press (2 seconds) of the button will cause the Raspberry Pi to safely shutdown.  A caption is displayed, and the "Active" LED (if fitted) will extinguish.

@@ Line 9: / Line 9: @@
 ===Software Build===
-The software build is based on the latest Bullseye Lite operating system (not the Buster version used for Portsdown and Ryde).  The build process is very similar and is described here https://github.com/BritishAmateurTelevisionClub/hdmisource.
+The software build is based on the latest Bullseye Lite operating system (not the Buster version used for Portsdown and Ryde).  The build process is very similar to that used for the Portsdown and is described here https://github.com/BritishAmateurTelevisionClub/hdmisource.
 There is no upgrade process.  A new build is required to load any (infrequent) new features.

← Older revision		Revision as of 19:49, 11 April 2023
Line 6:		Line 6:

	The wiring for the HDMI source is very simple; it only requires a switch connected between GPIO pin 16 and ground, and a button connected between GPIO pin 18 and ground. An additional "Active" LED can be wired, with a series resistor, between pin 13 and ground.. A 5.2 volt power supply completes the build. Make sure that you retain access to the HDMI output socket, the LAN port, all 4 USB ports and an extender for the Raspberry Pi Camera ribbon cable if required.		The wiring for the HDMI source is very simple; it only requires a switch connected between GPIO pin 16 and ground, and a button connected between GPIO pin 18 and ground. An additional "Active" LED can be wired, with a series resistor, between pin 13 and ground.. A 5.2 volt power supply completes the build. Make sure that you retain access to the HDMI output socket, the LAN port, all 4 USB ports and an extender for the Raspberry Pi Camera ribbon cable if required.
		+
		+	===Software Build===
		+
		+	The software build is based on the latest Bullseye Lite operating system (not the Buster version used for Portsdown and Ryde). The build process is very similar and is described here https://github.com/BritishAmateurTelevisionClub/hdmisource.
		+
		+	There is no upgrade process. A new build is required to load any (infrequent) new features.

	===Operation===		===Operation===

← Older revision		Revision as of 19:25, 11 April 2023
Line 9:		Line 9:
	===Operation===		===Operation===

−	On first power-up, make sure that the switch is open (the Test Card position) and that you have the Pi Camera ~~conne~~	+	On first power-up, make sure that the switch is open (the Test Card position) and that you have the Pi Camera connected if you plan to use it. Hot-plugging of the Pi Camera is not supported. Also connect the display or mixer to the HDMI output so that it can negotiate the correct resolution and frame rate.
		+
		+	Once the Raspberry Pi boots, the first test card should be displayed with a callsign overlay. Each time the button is pressed, the test card should change.
		+
		+	If the switch is closed, the first camera will be selected. The camera order is:
		+
		+	Original (H264-capable) Logitech C920
		+	Polycom Eagleeye USB Webcam
		+	EasyCap video composite video
		+	Raspberry Pi Camera
		+
		+	Each time the button is pressed, the next camera will be selected.
		+
		+	A long press (2 seconds) of the button will cause the Raspberry Pi to safely shutdown. A caption is displayed, and the "Active" LED (if fitted) will extinguish.
		+
		+	===Camera Sources===
		+
		+	ONLY the following camera sources are supported. Users will need to modify the file hdmisource/camera.sh if they want to add support for other cameras.
		+	* The early (H264-capable) C920 webcam. The subsequent 2 versions of the C920 are NOT supported.
		+	* The Polycom Eagleeye webcam. Two of these can be connected, and individually selected.
		+	* An Easycap for composite video capture. Bothe the Portsdown-compatible USBTV-007 version and the non-compatible MS210x versions are supported.

← Older revision		Revision as of 18:39, 11 April 2023
Line 2:		Line 2:

	[[File:HDMI_Source_1.jpg\|400px]]		[[File:HDMI_Source_1.jpg\|400px]]
		+
		+	===Construction===
		+
		+	The wiring for the HDMI source is very simple; it only requires a switch connected between GPIO pin 16 and ground, and a button connected between GPIO pin 18 and ground. An additional "Active" LED can be wired, with a series resistor, between pin 13 and ground.. A 5.2 volt power supply completes the build. Make sure that you retain access to the HDMI output socket, the LAN port, all 4 USB ports and an extender for the Raspberry Pi Camera ribbon cable if required.
		+
		+	===Operation===
		+
		+	On first power-up, make sure that the switch is open (the Test Card position) and that you have the Pi Camera conne