From 1f74c443405b2827217275bbdc428bd9320bb99a Mon Sep 17 00:00:00 2001 From: schneefux Date: Sun, 24 Nov 2019 17:18:36 +0100 Subject: Rework index page layout to include projects --- content/tech/weather-snowman.md | 39 --------------------------------------- 1 file changed, 39 deletions(-) delete mode 100644 content/tech/weather-snowman.md (limited to 'content/tech/weather-snowman.md') diff --git a/content/tech/weather-snowman.md b/content/tech/weather-snowman.md deleted file mode 100644 index 7be9a08..0000000 --- a/content/tech/weather-snowman.md +++ /dev/null @@ -1,39 +0,0 @@ ---- -categories: -- embedded -date: 2015-12-12 -title: Weather snowman - Embedded LED forecast ---- - -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. - - -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. - -![blue glowing snowman](/images/weather-snowman/snowman-glowblue.jpg) - -_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: - -![inside setup](/images/weather-snowman/leds.jpg) - -_Luckily, you don't see how messy it really becomes once you put all this in that tiny snowman…_ - -![inside setup, top view](/images/weather-snowman/leds-esp.jpg) - -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. - -![new notification snowman](/images/weather-snowman/snowman-blink.jpg) - -_Gotta check my mails._ - -![blue and red glowing snowman](/images/weather-snowman/snowman-glowbluered.jpg) -- cgit v1.3.1