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# Setting up matrix-reminder-bot (optional)
The playbook can install and configure [matrix-reminder-bot ](https://github.com/anoadragon453/matrix-reminder-bot ) for you.
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It's a bot you can use to **schedule one-off & recurring reminders and alarms** .
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See the project's [documentation ](https://github.com/anoadragon453/matrix-reminder-bot#usage ) to learn what it does and why it might be useful to you.
## Adjusting the playbook configuration
Add the following configuration to your `inventory/host_vars/matrix.DOMAIN/vars.yml` file:
```yaml
matrix_bot_matrix_reminder_bot_enabled: true
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# Uncomment and adjust this part if you'd like to use a username different than the default
# matrix_bot_matrix_reminder_bot_matrix_user_id_localpart: bot.matrix-reminder-bot
# Generate a strong password here. Consider generating it with `pwgen -s 64 1`
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matrix_bot_matrix_reminder_bot_matrix_user_password: PASSWORD_FOR_THE_BOT
# Adjust this to your timezone
matrix_bot_matrix_reminder_bot_reminders_timezone: Europe/London
```
## Installing
After configuring the playbook, run the [installation ](installing.md ) command again:
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```sh
ansible-playbook -i inventory/hosts setup.yml --tags=setup-all,ensure-matrix-users-created,start
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```
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**Notes**:
- the `ensure-matrix-users-created` playbook tag makes the playbook automatically create the bot's user account
- if you change the bot password (`matrix_bot_matrix_reminder_bot_matrix_user_password` in your `vars.yml` file) subsequently, the bot user's credentials on the homeserver won't be updated automatically. If you'd like to change the bot user's password, use a tool like [synapse-admin ](configuring-playbook-synapse-admin.md ) to change it, and then update `matrix_bot_matrix_reminder_bot_matrix_user_password` to let the bot know its new password
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## Usage
To use the bot, start a chat with `@bot.matrix-reminder-bot:DOMAIN` (where `YOUR_DOMAIN` is your base domain, not the `matrix.` domain).
You can also add the bot to any existing Matrix room (`/invite @bot .matrix-reminder-bot:DOMAIN`).
Basic usage is like this: `!remindme in 2 minutes; This is a test`
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Send `!help reminders` to the room to see the bot's help menu for additional commands.
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You can also refer to the upstream [Usage documentation ](https://github.com/anoadragon453/matrix-reminder-bot#usage ).
