⚡ Want to master Math, Date, and Time calculations in Home Assistant with Jinja templates?
📊 Learn advanced sensor calculations, timestamps, and timedelta functions to supercharge your automations!
In Episode 5 of the YAML & Jinja Templating Course, we dive into mathematical operations, date and time functions, and sensor calculations in Home Assistant. This tutorial is perfect for anyone looking to enhance Home Assistant automations and create advanced custom templates.
✅ What You’ll Learn in This Episode:
👉 Math Operations in Jinja: Add, subtract, multiply, divide, modulo, powers, and repeat strings
👉 Combining Math with Logic: Use not, comparisons, and calculations for automation triggers
👉 Home Assistant Sensor Calculations: Subtract power consumption from production, dynamic calculations for sensors
👉 Date & Time Functions: now(), utcnow(), strftime, as_datetime, as_local, time_since, time_until, timedelta, as_timedelta
👉 Timestamps & Timezones: Calculate durations, add/subtract time, avoid common pitfalls with UTC vs local time
👉 Advanced Templates: Work with precise hours, minutes, seconds, weekdays, months, and formatted outputs
📌 Recommended Viewing: Make sure you’ve watched Episodes 1-4 covering variables, filters, lists, tuples, dicts, scoping, and literals for full context. Playlist link:
https://www.youtube.com/playlist?list=PLKuGrHcHLKMiUTClEE8vb60m9v3ijFEhQ💻 Bonus Tips:
👉 Convert strings to numbers for accurate calculations
👉 Use timedelta for flexible time-based automation
👉 Display and manipulate dates and times in custom formats
💖 Support the channel via Patreon, Ko-Fi, or by becoming a member [links in description]. Don’t forget to like, subscribe, and comment to help more Home Assistant enthusiasts discover these tutorials!
⭐ You can download all the code that I created for the course at:
https://ko-fi.com/s/84ab3c5875⭐Links referred to in this video:
* The YAML and Jinja Course Playlist:
https://www.youtube.com/playlist?list=PLKuGrHcHLKMiUTClEE8vb60m9v3ijFEhQBlog version:
https://www.smarthomejunkie.net/yaml-jinja-templating-course-episode-5-math-date-time👉 Get the desktop clock/message ticker that I use in the video:
https://youtu.be/N0NKPJzGHuA⭐⭐⭐
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https://www.youtube.com/c/smarthomejunkie/join* Please consider becoming my patron 🏅 at
https://www.patreon.com/join/smarthomejunkie* Or please support me by buying me a ☕ at
https://ko-fi.com/smarthomejunkie/* Or sponsor me through PayPal at
https://paypal.me/smarthomejunkie⭐⭐⭐
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* 2TECH-AUDIO:
https://2tech-audio.bandcamp.com/00:00:00 Introduction
00:00:34 Calculations
00:01:26 Add
00:01:39 Subtract
00:01:59 Divide
00:02:26 Remainder
00:02:56 Multiply
00:03:20 Power
00:03:40 NOT
00:04:01 Calculation example in Home Assistant
00:05:17 Date & Time
00:05:25 NOW
00:05:29 Formatting Dates and Times
00:06:10 retrieving individual days, months, years, hours, minutes, seconds
00:07:03 UTCNOW
00:07:18 Calculate with Date & Time
00:07:33 Time_since
00:08:36 Time_until
00:09:08 Timedelta
00:09:36 As_timedelta
00:10:10 Timestamps
00:12:32 Bloopers
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