Firmware Updates

Firmware updates for the LRTimelapse Pro Timer 2.5

Download LRT Pro Timer 2.5 Firmware

Right next to the USB-Plug, you’ll find the hidden reset button.

Update the firmware

  1. Power on your timer.
  2. Connect the LRT Pro Timer to your computer using a standard micro-USB cable (some simple charging cables might not work, make sure to use a cable which can transfer data, for example from a HDD, SSD or Mobile Phone, if you need to buy one, this or this will definitely work).
  3. Use a pen or paperclip to double click on the hidden reset button on the left side of the timer, next to the usb port.
  4. After the double click, the timer display will freeze (turning the knob will not change anything anymore). If the display didn’t freeze, double click the reset button again until it freezes.
  5. A new drive called “LRTPROTIMER” will get mounted on your computer.
    (If this doesn’t happen, please try another USB cable, another USB port or another computer.)
  6. Copy the .uf2 file contained in the zip archive directly to the root of the LRTPROTIMER-drive.
    (On Mac the internal zip utility sometimes doesn’t recognize the archive, in such cases please use a dedicated unzip tool, like The Unarchiver.)
  7. After the UF2 file has been copied to the LRT Pro Timer, the device will reboot instantly with the new firmware.
  8. Remove the USB Cable.

Get notified about future firmware updates!

To get notified, please subscribe to the Firmware Updates Forum. To do so, sign in to the forum, then click on the top right on “Subscribe to this Forum“.

Firmware Updates for the LRT Pro Timer 2.0 Hardware

The older Hardware of the LRT Pro Timer 2.0 can also be flashed with the firmware of the LRT Pro Timer 2.5. Just make sure to go to Settings once after booting into the 2.5 Firmware and set Hardware Version to 2.0. Click to save to the flash memory.

You’ll only have to do this once. This setting will prevent issues with the battery indicator, because the 2.0 hardware still does not support a charging-indicator.

Version History

2.5 r15

  • When stopping the interval ramping, sometimes instead of continuing the shooting stopped for a while. Fixed.
  • Added decimals to the comfirm screen, if the times are set with decimals (mostly in Custom TL Mode).
  • Battery Indicator on Status screen won’t show more than 100% anymore.

2.5 r14

  • Bigger font for Menus, the Settings, Tools and Runtime Menus will now work like the main menu, with the selected option being displayed with a bigger font. Rotating will toggle through the options as before.
  • Added a confirm screen with the relevant settings before a timelapse actually starts.
  • Improved responsiveness of the button click. For some users the short click was just a little bit too short.
  • Resuming after pause sometimes lead to inconsistent intervals, fixed.

2.5 r12

  • Single/Bulb Exposure mode now has an “Open End” setting, where you can start and stop an exposure manually with a single click. The time on the display will count up to indicate how long you have been exposing.
  • Default Shutter-Time will now be saved when doing “Write Settings”
  • Screensaver is now deactivated while shooting in Single/Bulb mode.
  • Decoupling now shows a countdown (for decoupling times > 1 sec.)
  • Lowered battery consumption in the Bulb-Modes.

2.5 r11

  • New Custom TL Mode: Allows to freely define Timed Shooting, Interval and Exposure time.
  • Added Bulb mode option to Timed TL Mode.
  • Added expected runtime to No of Shots screen, video fps rate can be set in settings and will be saved.
  • Added current video runtime with the given fps from settings to the 2nd runtime page (rotate down while a timelapse is being recorded)
  • Fix: Bulb exposure time will not be reset anymore when cycling though the menu.
  • Fix: Destination interval for ramping cannot be shorter than Exposure + Minimum-Dark-Time.

2.5 r10 – Important Update!

  • Fixed an annoying bug, where after the interval ramping finished, wrong intervals were used. Sorry for that.
  • Added an option to flip the screen by 180° in the settings.

2.5 r9

  • When putting the timer into pause mode, subsequent releases were trigged too quickly, fixed (thanks Uli Fehr for reporting).

2.5 r8

  • First production version
  • Added smoothing to battery readout, improved calibration.
  • After changing the Date/Time on the RTC the Startup-Time will now be reset to avoid a wrong running time on the status screen.
  • Updated Bootloader to set some processor registers. Device will now identify itself as “LRTPROTIMER”.
  • Added a Hardware Version setting to the settings menu. Users of the older LRT Pro Timer 2.0 should set this setting to “PT 2.0” in order to avoid issues with the battery indicator.

2.5 r3

  • Longer Intervals up to 2 Hrs
  • More accurate timing for very short exposures
  • Minimum interval will now be dynamically calculated as (Shutter_Release_Time + AF_Time + 50ms) rounded up to the next 100ms. By default it’s 0.4 secs. For cameras which do not require an AF-Signal to be sent before the release, you can set the AF-Time to 0 in the settings, then the minimum interval will be 0.3 secs.
  • Maximum Bulb time for single exposures is now 24h
  • Improved Battery charging indicator: If the battery power goes below 5%, the battery indicator will start to flash.

2.5 r2

  • Improved Battery charging indicator.

2.5 r1

  • First official release for LRT Pro Timer 2.5

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