![]() ![]() The example code seemed to be a bit glitchy, below is a functional simple starter sketch. Installation instructions are provided on the github page. One advantage of this version however, is that you can use any GPIO pin, and conceivably multiple pins/strips as well. Specifically there is a UART driven branch, while this version does work with the current version of the Arduino IDE (1.6.5) it is unclear as to how well this implementation functions overall and what the trade offs are. Wooden front panels cover the continents so that the map. ![]() What makes this map unique is that all of the continents are backlit with WS2812B RGB strips. The NeoPixelBus was originally developed for use with Arduino hardware, and has since added support for the esp8266. This beautiful piece measures over 6 feet long and weighs 15 pounds The World Map has 578 LED lights and is controlled by an ESP8266 running the FastLED library. Originally developed by cnlohr, JoDa has since made a ESP8266#Arduino_IDE friendly version available, that looks to be a work in progress, it is thus far functional. This seems to be the most promising approach, using the specific architecture and optimizations available on the chip. You can then drive the data line directly from the GPIO of a an esp8266 at 3.3v and the lower voltage will function fine so long as you tie the grounds of the power sources together. It is quite easy to burn out the first LED in a strip if you do not use a resistor, fortunately if this does happen, the first LED can be cut out or bypassed and the remaining LEDs will still work.Īlternatively you can power the LED strip directly with a sufficiently rated 5v DC power supply, or for shorter strips directly off of a USB connection. You just need a small micro-controller and an RGB led driver. Ideally the data line uses a resistor to between the GPIO pin and the strip, to drop the voltage to about 80% of the supply voltage. To control RGB strips is done easily today. While the power connections can be connected at either end or anywhere in between, the data line is directional. They are most typically configured with 3 connections at either end: ground, data and 5v. The TIP31 can handle continuous collector current of 3A, so you ought to be safe with a 1A power supply. ![]() Try reducing the base resistor to 150 ohm. Your base resistor is too large and is limiting the current to your LED strip to no more than 165mA per channel. These LEDs are commonly found in strips with 30, 60, or 144 modules per meter. So the maximum current you will pass from collector to emitter is 503.3mA 165mA. ![]()
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