22th January 2020
This WebThing controller is prepared for ESP32 CPUs and uses esp-idf environment (current stable version).
The WebThing controls two LED light sources with a LED_PWM controller with hardware fading functionality ("automatically increase or decrease the duty cycle gradually, allowing for fades without any processor interference").
Requires:
- web-thing-server from
webthings-components
See webthings-node-example-project or webthings-empty-project.
WebThing has the following properties and one action:
- ON/OFF
- Channel, choose channel A, B or A+B
- ON minutes, shows minutes when device was ON in the current day, it is cleared on midnight
- brightness, in percentage 0 .. 100
- fade time, the time of smooth change of light from one level to another in milliseconds
- timer (action), turn ON the channel(s) for a certain number of minutes
See webthings-empty-project and follow steps described in Build webThing Device chapter.
In point 5 download webthing-led-2-channels repository. In function init_things() call init_led_2_channels() and include webthing_led_2_channels.h in your main project file.
The source code is available from GitHub.
In the prototype folder there are schematic file and a photo of the working prototype device. This device is built with ESP32 DevKitC.
This prototype is prepared for 12V LED stripes with a maximum power of approx. 50W per channel.
- WebThing Gateway - https://webthings.io/gateway/
- Web Thing API - https://webthings.io/api/
- esp-idf - https://github.com/espressif/esp-idf
This project is licensed under the MIT License.
- Krzysztof Zurek - github