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| author | schneefux <schneefux+commit@schneefux.xyz> | 2019-11-24 17:18:36 +0100 |
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| committer | schneefux <schneefux+commit@schneefux.xyz> | 2019-11-24 17:43:52 +0100 |
| commit | 1f74c443405b2827217275bbdc428bd9320bb99a (patch) | |
| tree | d97b3c35280ab24fdffd9b099fca0f318239986b /content/projects/weather-snowman.md | |
| parent | f752530692e7a3db2d75bc2c77b80839da64d5f3 (diff) | |
| download | blog-1f74c443405b2827217275bbdc428bd9320bb99a.tar.gz blog-1f74c443405b2827217275bbdc428bd9320bb99a.zip | |
Rework index page layout to include projects
Diffstat (limited to 'content/projects/weather-snowman.md')
| -rw-r--r-- | content/projects/weather-snowman.md | 38 |
1 files changed, 38 insertions, 0 deletions
diff --git a/content/projects/weather-snowman.md b/content/projects/weather-snowman.md new file mode 100644 index 0000000..d27cbbe --- /dev/null +++ b/content/projects/weather-snowman.md @@ -0,0 +1,38 @@ +--- +date: 2015-12-12 +title: Weather snowman - Embedded LED forecast +image: /images/weather-snowman/snowman-glowblue.jpg +--- + +It's christmas time! As a kind of pre-christmas gift, I built an Internet of Things enabled snowman for one of my best friends. +<!--more--> + +Like in [my last project]({{< ref "internet-is-magic.md" >}}), I used an ESP8266 again, some LEDs and an old acrylic snowman that I cut open. + + + +_The electronics were cheaper than the snowman._ + +Inside the snowman was a fading RGB led, a switch and batteries. Boring! + +I replaced it with the ESP8266, which had 3 LEDs attached to it (red, green, blue). Via a USB cable and a voltage converter, I powered it: + + + +_Luckily, you don't see how messy it really becomes once you put all this in that tiny snowman…_ + + + +Coding took a while. + +The ESP creates a wireless access point with a web server after powerup and asks you to enter your WiFi credentials. After first setup and whenever the module is started again, it connects to your wireless network and queries [OpenWeatherMap](http://openweathermap.org/) every hour for a 3 hour forecast. + +Depending on the forecast, the blue and red LEDs glow in different patterns. If a rainy day is to be expected, the top red LED lights up and the bottom blue LED fades in and out. A storm at night is displayed via a deep blue head and a blinking snowman's body. + +If you inspect [the source code](https://git.schneefux.xyz/electronics/weather-snowman), you'll see that there also is an Android app. The app simplifies the setup and runs a background service that makes your snowman's green LED flash on new notifications. + + + +_Gotta check my mails._ + + |