![]() ![]() ![]() demonstrates the software working with strings of up to 256 LEDs at once we’d love to see how far it can be pushed before breaking. It can even be used with LEDs in circuit to verify if problems are related to the data output or the hardware itself. It’s a great tool, one that costs very little and yet does the job well. The app takes the data and displays the pixels on screen, so you can verify they operate as expected before you hook up a single real LED. This data is then passed to a PC over the onboard USB serial connection, where it’s decoded by a custom Python app. ![]() The microcontroller then decodes the data using a combination of its onboard timers and SPI hardware. The NeoPill consists of an STM32F103 development board, into which one simply hooks up a NeoPixel data line. Of course, it’s nice to be able to simulate your new glowy project in software before you actually set up your LED strings in practice. NeoPixels and other addressable LED strings are a technology that have made vibrant, glowing LED projects accessible to all. ![]()
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