A solid-state replacement for IN-13 Nixie tubes, with 128-step resolution and SPI controlDesigned by Studio 449 in United States of America
Need a high-resolution discrete linear indicator? This design is a linear array of LEDs that has a resolution of 128 points/steps at 1 mm spacing. The display is controlled through a serial periphe...Read More…
Need a high-resolution discrete linear indicator? This design is a linear array of LEDs that has a resolution of 128 points/steps at 1 mm spacing. The display is controlled through a serial peripheral interface and and can be optionally dimmed with a PWM signal. The board dimensions are 25 x 150 mm.
This board combines 128 densely-placed SMD LEDs and shift registers to create a linear indicator that is easy to control from popular microcontrollers. The serial interface makes it possible to control 128 LEDs with only 6 pins.
The display can be controlled using the built-in SPI (serial peripheral interface) connection on most microcontrollers (Arduino, STM-32, ESP32, nRF5). A demo Arduino sketch is available on the Hackaday project page.
Pin descriptions and hook-up directions:
A 6-pin section of .100" breadboard header is included. For board integration, a footprint for a JST PA series connector is left unpopulated on the back on the board. The part number for this header is SM06B-PASS, available from many component distributors.
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