{"id":1343,"date":"2016-12-10T00:01:27","date_gmt":"2016-12-09T23:01:27","guid":{"rendered":"http:\/\/iot.fkainka.de\/?p=1343"},"modified":"2018-10-24T16:05:11","modified_gmt":"2018-10-24T15:05:11","slug":"day10-2016","status":"publish","type":"post","link":"https:\/\/iot.fkainka.de\/en\/day10-2016","title":{"rendered":"Day 10: Colour mixing"},"content":{"rendered":"

Behind today’s door is the reason for the many 1-kohm resistors. Namely, what you find there is a so-called RGB LED RGB stands for red-greenblue, since this LED is actually three LEDs that can be connected through a common cathode. By varying the brightness of the individual LEDs using PWM, you can generate almost every colour conceivable.<\/p>\n

You can see the layout of today’s circuit in the following figure. Note that the somewhat longer leg (the cathode) must be plugged into the GND contact strip.<\/p>\n

\"Die<\/a>

The RGB LED with all three series resistors<\/p><\/div>\n

In the Blynk app, a totally new element comes into play today, namely the ZeRGBa element (combination of Zebra and RGB). You can already see roughly how it works from the colourful design. You can either insert the element in your own new project and adjust the pins manually (red at D3, green at D5 and blue at D6) or load the interface of the test as usual via QR code. Whichever way you choose, don’t forget to enter the new token in the programme, which you can download as usual from below:
\n