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Tag: esp8266

Glowing Bottle

Glowing Bottle

My daughter is quite artistic (as any proud parent would say), and created a wire animal in a bottle. For this bottle she wanted some lights at the bottom (inside), but… the requirement was that no wire may go through the glass (which would have made everything lots easier of course). By total coincidence, some weeks earlier I did order some wireless power transfer kits. They contain two coils and two little electronics regulator boards to send and receive wireless…

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WiFi 240V AC Led Dimmer – Speech Controlled

WiFi 240V AC Led Dimmer – Speech Controlled

I wanted to build my own WiFi dimmer, to connect my dinner table lights to Alexa (Amazon Echo Dot). The used parts are an ESP8266 (I used a Wemos D1 Mini Clone), an ATTiny45, some sort of power module to supply 3.3 volt, and a zero-cross-detector / Triac dimmer module.

Sonoff Firmware Update – Lava-lamp Switch

Sonoff Firmware Update – Lava-lamp Switch

I have a lava-lamp, which should not be on for more than 5 or 6 hours at a time. So I decided to move it from switching on/off manually to something a bit more automated. For this I reprogrammed a Sonoff WiFi switch (based on the ESP8266). Now it can be controlled via voice commands (via Alexa / Amazon’s Echo Dot), and via some simple CURL (Wifi) command line call’s. The curl’s are put in a cron (timer) process on…

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Wifi Controlled Alert Light

Wifi Controlled Alert Light

Intro Now why would I want to create an alert light? 😉 The use case I had in mind was work related; in our team we do monitor a bunch of kubernetes/docker server clusters, a set of software build tools/services, and an oauth secured open-api-gateway. To keep an eye on this during office hours, we have some big dashboard monitors in the room, showing nice graphs and red/green alert boxes. However, sometimes when you are working on something, it takes…

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