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Found 15 results

  1. Nick Gammon published an interesting post on using SPI on 16 MHz Arduinos to run WS2812 LEDs (aka neopixels) at: http://gammon.com.au/forum/?id=13357. He also provides a link with a lot of information about the NRZ protocol used by the WS2812 and tolerances: https://wp.josh.com/2014/05/13/ws2812-neopixels-are-not-so-finicky-once-you-get-to-know-them/. The tolerances are actually quite a bit looser than what I previously believed. So, I set out to do something similar with Energia and LaunchPads running at different speeds. Spoiler alert: It works. The previously linked articles provid
  2. Has any one been able to port the WS2811 lib to msp432?
  3. Here is some code to drive ws281x strips using DMA driven SPI for the msp430f5529. I hadn't seen any example code showing how to use DMA and SPI. The example also provides some code that shows how to use inline asm that will work with both msp430-gcc and msp430-elf-gcc. The code below was tested with a ws2811 strip and msp430-elf-gcc. https://gist.github.com/RickKimball/9761b8f5a89d46a53939 -rick
  4. Some time ago, I wrote about WS2812D, an 8mm RGB LED with built-in controller (WS2811.) However, that LED was killed off after very short run. Since then, APA Electronics came out with it's own version, APA-106, which is compatible with WS2811. I have 2 versions available in my store right now, 5mm and 8mm. They are perfect for any breadboarding or through hole project. I will be using them in updated versions of my clocks (Geek & Gear.)
  5. As I teased a little bit in another post, here's my latest project: GrownUp LA Gears! For those of us who were growing up in the mid 90s, LA Gears were the best thing you could strap to your feet. They had LEDs in the heal that would flash when you walked. I wasn't lucky enough to have a pair when I was a kid, so maybe this whole thing is just me living out a lost childhood fantasy..... Much like the WS2811 driver library this project is being used to demo, I also snagged the idea from AdaFruit: https://learn.adafruit.com/firewalker-led-sneakers/overview I recommend reading through
  6. WIZpix is an internet enabled RGB pixel controller with built in PoE. WIZpix uses W5500 internet appliance to connect to internet and MSP430F5172 MCU to control RGB pixels. Built-in DC/DC converter allows use of PoE, which eliminates need for directly connected power supply, ability to place controller far away from the outlet, and use of only one inexpensive CAT-5 cable. It
  7. Those APA-102 leds that are packaged like ws281x pixels but you drive like a ws2801 (clk/data) have hit ebay.com. I ordered a 1 meter length and it arrived today. They look and feel like a ws2811 strip. It has 4 connections. 5V, GND, CLK, DATA. I whipped up a quick test and they seem to be happy: /** * APA-102 - test of 5 leds * * Author: rick@kimballsoftware.com * Date: 09-11-2014 * */ #include <fabooh.h> #include <main.h> #include <spi.h> namespace { typedef spi_attr_t<> SPI_MODE3_A; typedef spi_eusci_b0_t<CS, SCLK, MOSI, NO_PIN, SPI_MODE3_A >
  8. WS2812 driver for Tiva is available here
  9. WS2812 driver for Tiva (and Stellaris.) It uses hardware SPI and is non-blocking (you can run your code while updating WS2812.) 7/31 - updated demo code and fixed comments about timing main.cstartup_ccs.c
  10. Has anyone hooked up some ws2811 or ws2812 pixels to a connected launchpad (with a 120MHz TMC1294x processor) The closest example I could find for this platform was bit-banging in assembly code for the MSP430 processor. The most common technique on other platforms (Arduino, Pi) is "Fast SPI" where they change the clock rate on the SPI bus to match that of the pixels and send the data out that way. That's kinda pushing the limits of my skills/knowledge though, without an example to look at.
  11. RobG

    MSP430 Xmas

    This year, LaunchPad has a very special assignment during the holidays - to control our Xmas tree lights. So far, more than 20 different sequences are programmed into G2553. Piano pedal connected to LP allows easy selection. Finally, my wife can have Xmas lights she likes, one day white, another day warm colors, then maybe little strobe light here and there, and so on. There are 100 WS2811 pixels on the tree (those lights look much, much better in real life) (You can see LP right above the train, tiny green light.) MSP430 is also used to power my 10W RGB flood lights.
  12. If you have one of those 5050/WS2811 aka WS2812 strips and you want to "wear" it, I have a board for you. Here are the specs: 20pin MSP430G2xx3 5V power supply 0.05" programming header UART input (allows pixel or sequence control) 11mm wide (0.45") 25mm long (1") 32mm long (1.25") - version with memory optional SOIC SRAM or EEPROM 1mm thick There are 4 boards on the panel, 2 with memory option. Assembled boards Board in the sleeve Board attached to 30 LED strip (0.5m)
  13. This is a continuation of this project. While playing around with my WS2811 strips, I figured that it would be nice to have a board like this one. Could be used with one or two EQ chips and as a stand-alone board. The question is: with booster pack support or without?
  14. Created as part of GB#11, this booster pack uses 5050 RGB LEDs with integrated WS2811. Will post code examples later on. BTW, I cannot get a preview of this YouTube video to show up, can you check it out B#?
  15. I ported over oPossum's ws2811 asm routines to msp430-gcc and wrapped it in simple Energia library. This class provides Energia users with a simple class with methods that allow you to configure the datapin, and set the leds colors in a ws2811 led strip. To install, stop running Energia and create a directory in your sketch folder called 'libraries'. Unzip the attached zip file into libraries directory. You should end up with a directory called libraries/WS2811Driver. Restart Energia and you should have some new items in your "File/Sketchbook/libraries/WS2811Driver/Examples" menu item
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