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# Epson Projector Binding

This binding is compatible with Epson projectors that support the ESC/VP21 protocol over the built-in network (Ethernet or Wi-Fi) port, serial port or USB to serial adapter. If your projector does not have built-in networking, you can connect to your projector's serial port via a TCP connection using a serial over IP device or by usingser2net.

# Supported Things

This binding supports two thing types based on the connection used: projector-serial and projector-tcp.

# Discovery

If the projector has a built-in Ethernet port connected to the same network as the openHAB server and either the 'AMX Device Discovery' or 'Control4 SDDP' options are present and enabled in the projector's network menu, the thing will be discovered automatically. Serial port or serial over IP connections must be configured manually.

# Binding Configuration

There are no overall binding configuration settings that need to be set. All settings are through thing configuration parameters.

# Thing Configuration

The projector-serial thing has the following configuration parameters:

Parameter	Name	Description	Required
serialPort	Serial Port	Serial port device name that is connected to the Epson projector to control, e.g. COM1 on Windows, /dev/ttyS0 on Linux or /dev/tty.PL2303-0000103D on Mac.	yes
pollingInterval	Polling Interval	Polling interval in seconds to update channel states, range 5-60 seconds; default 10 seconds.	no
maxVolume	Max Volume Range	Set to the maximum volume level available in the projector's OSD to select the correct range for the volume control. e.g. 20 or 40; default 20	no

The projector-tcp thing has the following configuration parameters:

Parameter	Name	Description	Required
host	Host Name	Host Name or IP address for the projector or serial over IP device.	yes
port	Port	Port for the projector or serial over IP device; default 3629 for projectors with built-in Ethernet connector or Wi-Fi.	yes
pollingInterval	Polling Interval	Polling interval in seconds to update channel states, range 5-60 seconds; default 10 seconds.	no
maxVolume	Max Volume Range	Set to the maximum volume level available in the projector's OSD to select the correct range for the volume control. e.g. 20 or 40; default 20	no

Some notes:

The binding should work on all Epson projectors that support the ESC/VP21 protocol, however not all binding channels will be useable on all projectors.
The source channel includes a dropdown with the most common source inputs.
If your projector has a source input that is not in the dropdown, the two character hex code to access that input will be displayed by the source channel when that input is selected by the remote control.
By using the sitemap mapping or a rule to send the input's code back to the source channel, any source on the projector can be accessed by the binding.
The following channels aspectratio, colormode, luminance, gamma and background are pre-populated with a full set of options but not every option will be useable on all projectors.
If your projector has an option in one of the above mentioned channels that is not recognized by the binding, the channel will display 'UNKNOWN' if that un-recognized option is selected by the remote control.
The volume channel is a dimmer (0-100%) that is scaled to the range on the projector, either 0-20 or 0-40 per the maxVolume configuration setting. If your projector uses a different range, then the volume channel will not work.
If the projector power is switched to off in the middle of a polling operation, some of the channel values may become undefined until the projector is switched on again.
If the binding fails to connect to the projector using the direct IP connection, ensure that no password is configured on the projctor.
On Linux, you may get an error stating the serial port cannot be opened when the epsonprojector binding tries to load.
You can get around this by adding the openhab user to the dialout group like this: usermod -a -G dialout openhab.
Also on Linux you may have issues with the USB if using two serial USB devices e.g. epsonprojector and RFXcom. See the general documentation about serial port configuration for more on symlinking the USB ports.
Here is an example of ser2net.conf (for ser2net version < 4) you can use to share your serial port /dev/ttyUSB0 on IP port 4444 using ser2net Linux tool (opens new window) (take care, the baud rate is specific to the Epson projector):

4444:raw:0:/dev/ttyUSB0:9600 8DATABITS NONE 1STOPBIT LOCAL

Here is an example of ser2net.yaml (for ser2net version >= 4) you can use to share your serial port /dev/ttyUSB0 on IP port 4444 using ser2net Linux tool (opens new window) (take care, the baud rate is specific to the Epson projector):

connection: &conEpson
    accepter: tcp,4444
    enable: on
    options:
      kickolduser: true
    connector: serialdev,
              /dev/ttyUSB0,
              9600n81,local

# Channels

Channel	Item Type	Purpose	Values
power	Switch	Powers the projector on or off.
powerstate	String	Retrieves the textual power state of the projector.	Read only
source	String	Retrieve or set the input source.	See above
aspectratio	String	Retrieve or set the aspect ratio.	See above
colormode	String	Retrieve or set the color mode.	See above
freeze	Switch	Turn the freeze screen mode on or off.
mute	Switch	Turn the AV mute on or off.
volume	Dimmer	Retrieve or set the volume. Scaled to 0-20 or 0-40 on the projector per maxVolume setting.	0% - 100%
luminance	String	Retrieve or set the lamp mode.	See above
brightness	Number	Retrieve or set the brightness.	-24 - +24
contrast	Number	Retrieve or set the contrast.	-24 - +24
density	Number	Retrieve or set the density (color saturation).	-32 - +32
tint	Number	Retrieve or set the tint.	-32 - +32
colortemperature	Number	Retrieve or set the color temperature.	0 - +9
fleshtemperature	Number	Retrieve or set the flesh temperature.	0 - +6
gamma	String	Retrieve or set the gamma setting.	See above
autokeystone	Switch	Turn the auto keystone mode on or off.
verticalkeystone	Number	Retrieve or set the vertical keystone.	-30 - +30
horizontalkeystone	Number	Retrieve or set the horizontal keystone.	-30 - +30
verticalposition	Number	Retrieve or set the vertical position.	-8 - +10
horizontalposition	Number	Retrieve or set the horizontal position.	-23 - +26
verticalreverse	Switch	Turn the vertical reverse mode on or off.
horizontalreverse	Switch	Turn the horizontal reverse mode on or off.
background	String	Retrieve or set the background color/logo.	See above
keycode	String	Send a key operation command to the projector. (2 character code)	Write only
lamptime	Number	Retrieves the number of hours the lamp has been used.	Read only
errcode	Number	Retrieves the last error code.	Read only
errmessage	String	Retrieves the description of the last error.	Read only

# Full Example

things/epson.things:

// serial port connection
epsonprojector:projector-serial:hometheater "Projector" [ serialPort="COM5", pollingInterval=10, maxVolume=20 ]

// direct IP or serial over IP connection
epsonprojector:projector-tcp:hometheater "Projector" [ host="192.168.0.10", port=3629, pollingInterval=10, maxVolume=20 ]

items/epson.items

Switch epsonPower                                      { channel="epsonprojector:projector-serial:hometheater:power" }
String epsonSource       "Source [%s]"                 { channel="epsonprojector:projector-serial:hometheater:source" }
String epsonAspectRatio  "Aspect Ratio [%s]"           { channel="epsonprojector:projector-serial:hometheater:aspectratio" }
String epsonColorMode    "Color Mode [%s]"             { channel="epsonprojector:projector-serial:hometheater:colormode" }
Switch epsonFreeze                                     { channel="epsonprojector:projector-serial:hometheater:freeze" }
Switch epsonMute                                       { channel="epsonprojector:projector-serial:hometheater:mute" }
Dimmer epsonVolume                                     { channel="epsonprojector:projector-serial:hometheater:volume" }
String epsonLuminance    "Lamp Mode [%s]"              { channel="epsonprojector:projector-serial:hometheater:luminance" }

Number epsonBrightness                                 { channel="epsonprojector:projector-serial:hometheater:brightness" }
Number epsonContrast                                   { channel="epsonprojector:projector-serial:hometheater:contrast" }
Number epsonDensity                                    { channel="epsonprojector:projector-serial:hometheater:density" }
Number epsonTint                                       { channel="epsonprojector:projector-serial:hometheater:tint" }
Number epsonColorTemperature                           { channel="epsonprojector:projector-serial:hometheater:colortemperature" }
Number epsonFleshTemperature                           { channel="epsonprojector:projector-serial:hometheater:fleshtemperature" }
String epsonGamma        "Gamma [%s]"                  { channel="epsonprojector:projector-serial:hometheater:gamma" }

Switch epsonAutokeystone                               { channel="epsonprojector:projector-serial:hometheater:autokeystone" }
Number epsonVerticalKeystone                           { channel="epsonprojector:projector-serial:hometheater:verticalkeystone" }
Number epsonHorizontalKeystone                         { channel="epsonprojector:projector-serial:hometheater:horizontalkeystone" }
Number epsonVerticalPosition                           { channel="epsonprojector:projector-serial:hometheater:verticalposition" }
Number epsonHorizontalPosition                         { channel="epsonprojector:projector-serial:hometheater:horizontalposition" }
Switch epsonVerticalReverse                            { channel="epsonprojector:projector-serial:hometheater:verticalreverse" }
Switch epsonHorizontalReverse                          { channel="epsonprojector:projector-serial:hometheater:horizontalreverse" }

String epsonBackground  "Background [%s]"              { channel="epsonprojector:projector-serial:hometheater:background" }
String epsonKeyCode     "Key Code [%s]"                { channel="epsonprojector:projector-serial:hometheater:keycode", autoupdate="false" }
String epsonPowerState  "Power State [%s]"   <switch>  { channel="epsonprojector:projector-serial:hometheater:powerstate" }
Number epsonLampTime    "Lamp Time [%d h]"   <switch>  { channel="epsonprojector:projector-serial:hometheater:lamptime" }
Number epsonErrCode     "Error Code [%d]"    <error>   { channel="epsonprojector:projector-serial:hometheater:errcode" }
String epsonErrMessage  "Error Message [%s]" <error>   { channel="epsonprojector:projector-serial:hometheater:errmessage" }

sitemaps/epson.sitemap

sitemap epson label="Epson Projector"
{
    Frame label="Controls" {
        Switch     item=epsonPower   label="Power"
        Selection  item=epsonSource  label="Source" mappings=["30"="HDMI1", "A0"="HDMI2", "14"="Component", "20"="PC DSUB", "41"="Video", "42"="S-Video"]
        Switch     item=epsonFreeze  label="Freeze"
        Switch     item=epsonMute    label="AV Mute"
        // Volume can be a Setpoint also
        Slider     item=epsonVolume  label="Volume" minValue=0 maxValue=100 step=1 icon="soundvolume"
        // This Switch is deprecated in favor of the Buttongrid element below
        Switch     item=epsonKeyCode label="Navigation" icon="screen" mappings=["03"="Menu", "35"="˄", "36"="˅", "37"="<", "38"=">", "16"="Enter"]
        Buttongrid item=epsonKeyCode label="Navigation" staticIcon=material:tv_remote buttons=[1:1:"03"="Menu", 1:2:"35"="Up"=f7:arrowtriangle_up, 3:2:"36"="Down"=f7:arrowtriangle_down, 2:1:"37"="Left"=f7:arrowtriangle_left, 2:3:"38"="Right"=f7:arrowtriangle_right, 2:2:"16"="Enter"]
    }
    Frame label="Adjust Image" {
        Setpoint   item=epsonBrightness         label="Brightness"
        Setpoint   item=epsonContrast           label="Contrast"
        Setpoint   item=epsonDensity            label="Color Saturation"
        Setpoint   item=epsonTint               label="Tint"
        Switch     item=epsonAutokeystone       label="Auto Keystone"
        Setpoint   item=epsonVerticalKeystone   label="Vertical Keystone"
        Setpoint   item=epsonHorizontalKeystone label="Horizontal Keystone"
        Setpoint   item=epsonVerticalPosition   label="Vertical Position"
        Setpoint   item=epsonHorizontalPosition label="Horizontal Position"
        Selection  item=epsonBackground         label="Background"
    }
    Frame label="Flip Projection" {
        Switch  item=epsonVerticalReverse   label="Vertical Reverse"
        Switch  item=epsonHorizontalReverse label="Horizontal Reverse"
    }
    Frame label="Info" {
        Text  item=epsonAspectRatio
        Text  item=epsonColorMode
        Text  item=epsonColorTemperature    label="Color Temperature"
        Text  item=epsonFleshTemperature    label="Flesh Temperature"
        Text  item=epsonGamma
        Text  item=epsonLuminance
        Text  item=epsonPowerState
        Text  item=epsonLampTime
        Text  item=epsonErrCode
        Text  item=epsonErrMessage
    }
}

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