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simpleavr

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Everything posted by simpleavr

  1. I created a new thread under projects and started w/ the BOM, part sources and schematic there. I am working on a revised PCB and will post both the old and new later.
  2. MSP430G2452 acting as a TMS0803 calculator chip. Emulates TI Datamath 2500 and Sinclair Scientific. There seems to be some interest in building this emulating calculator so I will start a build thread. /EDIT add youtube video, different versions of PCBs, try to get everything in one place. 1st July. 2014 /EDIT add build tips down under, here 8th July, 2014 I got introduced to a web based calculator emulation via this thread. I got interested and start playing w/ the idea of implementing the emulation on an msp430, my code is based on Mr Ken Shirriff's work from the follow
  3. @@enl @@zeke I will look into your suggestions. Thanks. I guess I am looking for something simple and not expensive. This is really toy / show piece although I do use it daily. The tactile buttons are clickery (not soft to press) and the underside are spiky. And I guess it's acceptable if you are not an accountant who need to pound it everyday. @@bluehash It's open source and of course we can group make it if you don't mind my sloppy work. I am not in a position to help assembly etc, but can provide code / testing / advice. I can upload the fritzing design. I would thin
  4. Yes, you can make it relatively easily and cheap. I ordered from Elecrow. They now have a 10 x 10 cm green pcb special. Mine is like 8.5 x 5 cm and it cost me less than $20 including shipping. Bubble led you can get from Sparkfun for a few dollars. Buttons, coin cell holder etc are all from ebay / DX. I am not a good PCB designer. The layout is done w/ Fritzing, but it is not clean (and it works though), in that I did not clean up the schematic. I just dived in a place my buttons and start traces. I will upload in a few days, do you prefer Fritzing format or a zip package that you
  5. Yes, it reset itself if my finger is on certain pins of the MCU. Apart from electric contact, my daughter complained and ask me to make it non-spikely / (non-spiky?) The back will be bound to a piece of hard plastic, current thinking is a cut out from clam-shell packaging material w/ "catches" along the edge. Have not make it yet. But I do use it daily as my job needs a lot of simple adding.
  6. Bump. Finally moved the emulator to a single PCB design (after one failed PCB design). Now my kids can take them and use them in school. Source code can be found at https://github.com/simpleavr/tms0800. Source code based on Ken Shirriff and other's work, please see http://righto.com/ti and http://righto.com/sinclair A few photos... PCB design available upon request.
  7. Paste your lsusb, dmesg or any other log output (last few lines) here to identify the problem.
  8. This thread may help linux permission problems. http://forum.43oh.com/topic/3918-msp-exp430g2-upload-errors/
  9. There were a few posts in HackADay, DP, etc mentioning the use of such DVB-T sticks as SDRs. I was following links to links and understand it can also receive ADS-B, which is similar to the AIS (chicken's dAISy project) but instead of boats, it's for planes, I leant. Basically you need to get rtl-sdr, which expose these DVB-T sticks w/ the RTL chipset for use as an SDR. dump1090 is a script front-end that make use of rtl-sdr to get the ADS-B 1090Mhz signal and decode it. It also has an option to visualize the data via google earth (served via port 8080). The gnu-radio, gqrx are for othe
  10. Saw chicken's dAISy project. Thought it was cool. Ordered this $10ish RT2832U DVB-T USB stick from dx.com, came in 3 weeks. Install gnu-radio, rtl-sdr, gqrx and dump1090. Now watching planes over my house. I am inside and using the stock antenna, can capture at most half a dozen planes. Will build an elevated outdoor antenna when it's warmer. Should catch tenths of planes.
  11. Thanks. It's tetris-like. I had to limit the size and number of game pieces to make it playable on a 8x8 matrix.
  12. Are we voting for this round of POTM soon? Time to reveal my Easter Egg "game" for upvotes. Source code now host on github. https://github.com/simpleavr/mclock
  13. @@chicken Super cool! ...But why are boats on land? Do these things need calibrations?
  14. Great idea, bluehash can supplement / sweeten store orders w/ them. BTW How did you end up w/ 32 pcs. What were you planning w/ them. Another year of Christmas light attempt? My Christmas light project(s) never materialize, for the last few years, December is / was always busy.
  15. EVERYBODY have them. They are like "rice" to a Chinese meal (If doing projects are like cooking Chinese meals). Still nice to see your offer. Thanks.
  16. I am using Linux Mint. For starter projects command line environment is more agile. On windows side, I install cygwin for a similar build environment. If you are new to msp430, I suggest you download the code examples to start with, http://processors.wiki.ti.com/index.php/MSP430G2_LaunchPad it pretty much covers all the various device features in one-file example projects. It is very handy to cut&paste from these examples. I don't even use makefiles as most of my projects are one-file big. I use the following script to compile. It will just take my last c file edited and comp
  17. @@M-atthias from the picture on his site, it's jscrane's build (your "upstair", i.e. last post before your last post) that owns the blog. @@jscrane, looks like you are all things bootloader. Thanks for mentioning this thread.
  18. @@abecedarian you will hate me more when I reveal the "easter egg" application Like my original 3p4w clock, this project also has a hidden feature. I will reveal it just before voting starts (to get more upvotes). So the source code will only be release then. You can make a guess on what it is though. Or un-assembly this hex? mclock_hex.txt May be release the assembled listing next week if anyone is interested in reading.
  19. Here is my entry http://forum.43oh.com/topic/4766-m-clock-build-m-for-minimalist-multi-mode-or-matrix/ Do not have a lot of time or ideas. So I "recycle" one of my old AVR projects and turn it into a msp430. Not 100% complete. Firmware / source will follow. Comments welcome. Thanks.
  20. Minimalist Multi-mode Matrix Clock Description This is a multi-mode clock project based on the msp430g2432. It can be assembled with minimal parts. With limited 8x8 pixels display resolution, this 12 hour clock shows time in 6 different modes. This project is based on a older attiny 2313 project I did a few years ago. HHMM mode, typical hours plus minutes scrolling digits with colon separator. Seconds mode, shows only seconds. Tix mode (shown below), led matrix is divided into quadrant, the upper quadrants shows the hour in bcd (binary coded decimal) value
  21. This is my entry to the POTM Nov-Dec 2013. Minimalist's Clock? Multi-mode Clock? Matrix Clock? M-Clock Description to follow...
  22. @@curiousmind I supposed you would have changed the following line to BIT7, if you had re-wire the PIR output to P1.7. #define PIRsensor BIT5 In your original code you only define P1.0 (LP on board red LED) as output. You should now set P1DIR = 0x7f; So that P1.0 to P1.6 are configured as output. This would at least make the 7 segment LED show something.
  23. @@shluzzzoid I saw your video and it appears that there is a filter on the LED display, it had made the characters a lot more readable. I am curious how it was done? Did you make it from some kind of plastic film? If so, where does it come from. (I am assuming you are re-purposing something as the filter). Thanks.
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