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RocketLaunchCountdownRewrite/readme.md
2025-11-20 22:04:02 -05:00

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# RocketLaunchCountdown
RocketLaunchCountdown is a Python + HTML system to operate a launch countdown and Go/No-Go indicator. The Go/No-Go indicator can be driven either from a spreadsheet (CSV export via a share link configured in the Settings window) or from manual buttons in the app. The mode is selected with the radio button in Settings.
## Latest release
[RocketLaunchCountdown 0.7.0](https://github.com/HamsterSpaceNerd3000/RocketLaunchCountdown/releases/tag/v0.7.0-alpha)
### Features added
- Added ability to change clock once in T+.
- Added Major Concerns display.
## OBS instructions
To use the HTML files in OBS (or similar software) as browser sources:
1. Create a Browser source.
2. Select **Local file** and choose the HTML file you want to display (e.g. `countdown.html`, `gonogo.html`, `major_concerns.html`).
3. Check **Shutdown source when not visible** and **Refresh browser when scene becomes active**.
4. (Optional) Install the `xObsBrowserAutoRefresh` extension to enable timed automatic refreshes.
- Download: https://obsproject.com/forum/resources/xobsbrowserautorefresh-timed-automatic-browser-source-refreshing.1677
- Set auto-refresh times to your preference. Note: very fast refresh rates increase the chance of browser caching issues.
> Caution: The `xObsBrowserAutoRefresh` extension may not have a Mac version.
## Install instructions
Install is simple: download the installer, run it, and follow the prompts to install RocketLaunchCountdown.
If you want help wiring this into OBS (example scene setup, recommended refresh settings, or troubleshooting browser-source caching), tell me the OBS version and platform and I can give a short step-by-step.