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amstan

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Everything posted by amstan

  1. It's not that great. I tried it for my rgb clock project. You have to do a lot of work for it. You basically trade your project documentation(which you have to customize for their site) for the boards. They're not that good of boards, green only, take quite a while to get(elecrow was faster). http://www.electronics-lab.com/projects/mcu/025/index.html I eventually went with elecrow since they had black available and I didn't feel sketchy basically selling my design.
  2. When i dabbled into I2C it seemed that the hardware for it is really inflexible(it even contains bugs). So i just made/adapted my own bit banging library. I don't care that it's bit banging because it's probably fast enough. The bonus is that you can use it on any pins that you like. https://github.com/amstan/binaryclock/blob/master/firmware/i2c.h
  3. When I counted there were 81. I guess you have 80 now. heh. How do you limit current on them? Aren't you worried that you get uneven brightness if you just use the pin current limit? At least the anodes should have a resistor for current limit(ideally a transistor as well, if you want higher currents). Also.. a battery like the CR2032 can only give like 5mA, anything more and the voltage should drop. If the voltage drops too low you might have glitches in the mcu and have problems with the program execution. You could solve that with a big cap. I included the leftover parts fo
  4. @@simpleavr Why don't you jump on IRC to discuss donating arrangements? #43oh on irc.freenode.net
  5. Would this be of interest? I have a bag of them (80, all pictured). In various stages of pin bending(i don't think any are broken though). I didn't really have any plan for them, totally forgot I had them for a while there. I'm open to donating them for this group buy. At least part of them(I don't think there's a need for 80, heh). The catch is that they're 3 digits, this board calls for 4 digit displays.
  6. Yeah, same. I have too many things i don't have a purpose for.
  7. I had mine working on 18MHz using the ti sample code and my own xtal.
  8. Unfortunately it doesn't look very well when it's stationary. Perhaps I'll get some videos in a few days.
  9. I got mine a few days ago. I wrote a python3 driver for it: https://github.com/amstan/pynoritake I also tried to emulate the squiggle from this lcd megademo 2, Just run ./squiggle_noritake.py to see it on ttyUSB0, you'll need numpy as well.
  10. You need to install http://processors.wiki.ti.com/index.php/MSPDS_Open_Source_Package aka tilib. It replaces the uif method in mspdebug. Energia comes with a binary of it. If you don't want to go the energia route, and you have archlinux you can install https://aur.archlinux.org/packages/mspds/. If you're on another distro you could look inside here and run the compiling commands manually.
  11. ld.exe: CC3000FirwareUpdate.cpp.elf section `.rodata' will not fit in region `rom' ld.exe: section .vectors loaded at [0000ff80,0000ffff] overlaps section .rodata loaded at [0000e6b0,00011a29] ld.exe: region `rom' overflowed by 6840 bytes Seems to me that something won't fit. The CC3000 firmware might be too big to be used with the fr board(which only has 16k of code space). I might be wrong though.
  12. You know the drill. Same kind of promotion as http://forum.43oh.com/topic/4358-noritake-graphic-vfd-128x32-free-sample/. Link: http://www.noritake-elec.com/evalkit-sample.php?id=sample Expires 31 Jan 2014 at 7:00 PM CST. Description from the site:
  13. Is there a schematic out there for this? I would like to know how the 3.3V and 5V are generated and what kind of topologies they have. I want to see if i could make a booster pack with some ws2812 leds(ala my binary clock) powered by this.
  14. I could, but there are a few problems i though of: The design I have right now can be battery powered. None of the launchpads have that unless you use the new fuel tank booster pack. Maybe that's an option. I could also integrate the battery charger on my board(same chip from the olimexino). I need 5V for the RGB leds, the original 20-pin launchpad only have low current(less than 100mA) at 3.3V. Even though the original launchpad could probably drive the display just fine, it will have to be a 40 pin booster pack. Perhaps i could add a 5V pin for external powering(maybe from the fuel tank boo
  15. I would like to enter my Binary Clock. Here's my project page: http://forum.43oh.com/topic/4832-binary-clock/ Video might follow.
  16. This project is an update to the binary clock that I used on my desk. The new version has a lot of new features including RGB leds(WS2812), a bigger microcontroller(The Olimexino-5510 board), capacitive touch and light sensor. My first idea was to have something based on the MSP430G2553, a couple of WS2812 leds and capacitive touch. But after comparing the work i would have to do, and very few rewards to the Olimexino-5510 functionality I quickly reconsidered. The Olimexino-5510 provides quite a few things I wanted: MSP430F5510 Battery Charger USB capabilities Arduino Form Factor So all I ha
  17. I don't think it's possible to do RO method using the comparators(without interrupts every osc) with the default capacitive booster pack. R10-R15 are not populated, they allow you to use RC with it because they connect to ground. If you wanted RO method you would need R10-R15 to be connected to CBOUT instead(the wire that goes to all the leds). If you wanna be messy it is possible, all the pins are there, but it won't be pretty. RC is not that bad, i've done it before in a pinch.
  18. Totally what it was! I am very grateful! All my pins work properly now!
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