I power the LED strip directly from the Powerbank which is attached via Micro-USB.
The LED strip only needs 1 connection beside power, as it gets controlled through the PWM chip that lives on the Arduino.
#Pixelstick converter pro
Pinout on the Mega PRO is different, at least on the Version that I bought.
To program your Arduino you need the Arduino IDE. For the case I used an old bluetooth receiver that I have no use of anymore. You also need a Micro USB cable, some wire, a soldering iron, solder, electrical tape and something to mount the LED strip on. Total cost EURO 20,27 (almost 20 times less then the Pixelstick)
MICRO USB To DIP Adapter 5pin Female Connector B Type. Micro SD card mini TF card reader module SPI interfaces. Five Direction Navigation Button Module for MCU. 4pin 0.96″ White/Blue/Yellow blue 0.96 inch OLED 128X64. 144 pixels/leds/m WS2812 Smart RGB Led Light Strip Black/ PCB. I sourced everything from aliexpress here are all the parts that I have used: I chose an Arduino MEGA 2560 Pro, a small OLED Display, a Micro-SD reader and a digital joystick, as the display does not come with buttons. The LCD display alone is already bigger than my complete controller Advertisements I am not a fan of the large Arduino MEGA and the LCD Display shield as it makes the device unnecessarily large, so I decided to swap some parts. Hardware wise I think it is a bit dated and way to big. Luckily, Michael Ross already built something like this and it has some of the features, that I want. 
As I have never handled the real thing, I don’t know the kind of features it has, but I know exactly which features I want in a device like this:
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