Code to switch off the LCD of Theta X

Hello there, I am using Gphoto2 with a Theta X and I would like to turn off the LCD.

Does anyone have any experience of this or better still know the command in Gphoto2 to switch off the LCD?

Many Thanks

Drew

@drewgardner1 This may not be what you want, but posting just in case it’s useful. You can control the LCD on a THETA X with the THETA WebAPI. It’s an option called _cameraControlSource. It needs to be set to “app”.

https://api.ricoh/docs/theta-web-api-v2.1/options/_camera_control_source/

Hi Jesse,

thank you for the suggestion. I had seen Craig’s post about this in May. I am running the set up so the Wi-Fi api is not applicable? I have tried the command (and variations of it) in Gphoto2 but have had no luck. I would be most interested to know if anyone has a steer on this.

Best wishes

Drew

There doesn’t appear to be a way to run the command with the USB API. We could add the question again to the agenda with your contact at RICOH.

Hi Craig

Thank you again

I am a bit stuck then for the time being

If you hear anything from Ricoh let me know as it would be a tremendous help

Best wishes

Drew

Are you stuck because you need the LCD off due to power use?

Or, are you stuck because you need the LCD off because the light from the screen is messing up your picture?

Hi Craig

Old territory but here we go.

It’s all about power, or the lack of.

I can’t get the Theta X to consistently and reliably keep its charge.

Running latest firmware

USB setting on camera set to charge

Wi-Fi off

Bluetooth off

LCD set to minimum brightness

Firstly, I have ordered a voltage/amp checker which arrives tomorrow

My set up is SO close to yours yet somehow I am not getting sufficient power to the X

My set up is a Pi4 B

With a 4g wireless dongle

Belkin power strip powers PI and externals

I am guessing things will be clearer when running the current/amp test but it is quite frustrating.

I don’t think you can turn off the LCD backlight with the USB API right now. I think you can turn it off with a plug-in.

How to control the brightness of LCD panel and LEDs (theta360.hardware.Camera)

  • After executing setBrightnessMode(1), the brightness will be controlled by camera AE automatically.

    /**
     * @brief set the brightness controll mode of LCD panel and LED1/2
     * @param int mode : 0=manual, 1=auto (default)
     */
    public final void setBrightnessMode(int mode)
    
  • After executing setBrightnessMode(0), the brightness can be controlled by following APIs. These APIs can be used regardless of openning camera resource.

    /**
     * @brief set the brightness value of LCD panel
     * @param int brightness : 0 ~ 4095
     */
    public final void ctrlLcdBrightness(int brightness)
    
    /**
     * @brief get the brightness value of LCD panel
     */
    public int getLcdBrightness()
    
    /**
     * @brief set the brightness value of LED1/2
     * @param int ledId : 1=RED, 2=BLUE, 3=GREEN
     * @param int brightness : 0 ~ 255
     */
    public final void ctrlLedPowerBrightness(int ledId, int brightness)
    public final void ctrlLedStatusBrightness(int ledId, int brightness)
    
    /**
     * @brief get the brightness value of LED1/2
     * @param int ledId : 1=RED, 2=BLUE, 3=GREEN
     */
    public final int getLedPowerBrightness(int ledId)
    public final int getLedStatusBrightness(int ledId)
    
1 Like

Hi Craig

Thank you for that, I will be straight into it next week and let you know how I get on

I bought the voltage/current meter you kindly suggested have found something interesting out about the Pi/X combo.

It seems the current starts off really strongly(enough to charge the x from zero to 100pc) however over time the current drops so it no longer is enough to maintain charge and over 2 days charge falls to 3pc.

I am clueless as to what might be causing this problem but will let you know what I find out.

Warm Regards

Drew

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on the USB current meter, is the current sent to the THETA X dropping as the battery charge drops?

image
current sent to camera

I have not tested this for continuous use over two days.

Yes, indisputably

Starts strong, no lower than 33A

In the long run though it falls to to 23A which means a long, slow decline.

Now sitting at 3pc

Culprits for this? Pi, X ?

I have no clue but turning off the LCD will be a great help.

Hopefully.

Loving the X but in terms of usb API etc not as mature as the Z1, hopefully in time though…

Warm Regards

Drew

If you place a powered hub between the Raspberry Pi and the RICOH THETA, you can see if the culprit is the Pi. Ideally, you can borrow a powered USB hub with a separate BC 1.2 capability. Or, consider buying equipment from a place with a good return policy =n

image

Hi Craig

Will check it out

I am devoting time this week to work it out

Many thanks

Drew

This only works from a plug-in at the moment.