![]() Colors can also be set using setRgb(), setHsv() and setCmyk(). The name() function returns the name of the color in the format "#RRGGBB". The color names are taken from the SVG 1.0 color names. The spec() function tells how the color was specified.Ī color can be set by passing an RGB string (such as "#112233"), or an ARGB string (such as "#ff112233") or a color name (such as "blue"), to the fromString() function. Alternatively, a color can be converted to any of the three formats using the convertTo() function (returning a copy of the color in the desired format), or any of the setRgb(), setHsv() and setCmyk() functions altering this color's format. In addition the static fromRgb(), fromHsv() and fromCmyk() functions create colors from the specified values. These functions return a copy of the color using the desired format. To create a QColor based on either HSV or CMYK values, use the toHsv() and toCmyk() functions respectively. The QColor constructor creates the color based on RGB values. SetRgbF(float r, float g, float b, float a = 1.0) SetHsvF(float h, float s, float v, float a = 1.0) SetHslF(float h, float s, float l, float a = 1.0) SetCmykF(float c, float m, float y, float k, float a = 1.0) SetCmyk(int c, int m, int y, int k, int a = 255) Name(QColor::NameFormat format = HexRgb) const GetRgbF(float * r, float * g, float * b, float * a = nullptr) const GetRgb(int * r, int * g, int * b, int * a = nullptr) const GetHsvF(float * h, float * s, float * v, float * a = nullptr) const GetHsv(int * h, int * s, int * v, int * a = nullptr) const GetHslF(float * h, float * s, float * l, float * a = nullptr) const GetHsl(int * h, int * s, int * l, int * a = nullptr) const GetCmykF(float * c, float * m, float * y, float * k, float * a = nullptr) const If you like this post probably you might like my next ones, so please support me by subscribing my blog.GetCmyk(int * c, int * m, int * y, int * k, int * a = nullptr) const You can take this example and modify it to control an actual lamp.ĭo you have any questions? Leave a comment down below! This is a basic example that shows you how easy it is to remotely control an RGB LED with an ESP8266. Go to the top of this page to see a video demonstration of this project. Now your RGB LED changes to the blue color: Then simply click the “Change Color” button: Simply drag your mouse or finger and select the color for your RGB LED: This what you should see:Ĭlick the field and a small window opens with a color picker. Go to any browser and enter the IP address of your ESP8266. If you experience problems seeing your IP read this troubleshooting guide. In my case, the ESP IP address is 192.168.1.7. Save that IP address, because you’ll need it later. When your ESP8266 restarts, it prints in your serial monitor the ESP IP address. Important: If you’re using an RGB LED common cathode, you need to connect the longer lead to GND. Now follow these schematics to create the circuit that the RGB LED common anode. Important: If you’re using an RGB LED common cathode, you need to comment and uncomment some code in the if(_GET.r or _GET.g or _GET.b) statement as described in the script comments. _, _, method, path = string.find(request, "(+) (.+) HTTP") įor k, v in string.gmatch(vars, "(%w+)=(%w+)&*") doīuf = buf."function update(picker) " ("YOUR_NETWORK_NAME","YOUR_NETWORK_PASSWORD")Ĭonn:on("receive", function(client,request) Your file should be named “ a“.ĭon’t forget to add your network name (SSID) and password to the script below. Upload the following code into your ESP8266 using the preceding software. Connect your ESP8266-12E that has built-in programmer to your computerĮverything that you need to worry about or change is highlighted in red box.You should see a window similar to the preceding Figure, follow these instructions to upload a Lua file: I recommend using the ESPlorer IDE which is a program created by 4refr0nt to send commands to your ESP8266.įollow these instructions to download and install ESPlorer IDE: ![]() In this tutorial we are going to use the NodeMCU firmware. You have to flash your ESP with NodeMCU firmare. You can use the preceding links or go directly to /tools to find all the parts for your projects at the best price! 1x RGB LED Common Anode (read How do RGB LEDs work?).1x ESP8266-12E – read Best ESP8266 Wi-Fi Development Board.Here’s the hardware that you need to complete this project: If you like the ESP and you want to do more projects you can download my eBook Home Automation using ESP8266 here. To learn more about the ESP8266 and RGB LEDs use the following tutorials as a reference: This project is called ESP8266 RGB Color Picker. In this project, you’re going to build a web server with an ESP8266 to remotely control an RGB LED. ![]()
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