author
5CommentsIowa City, IAJoined February 16th, 2013
I work with university student entrepreneurs as a mentor, and part-time instructor developing new products for commercialization.

Tell us about yourself!

Complete Your Profile
  • DrOldies commented on akajes's instructable Marlin-config7 months ago
    Marlin-config

    I have the same questions as pseakins but it looks like the author is not supporting this. It's a sham because it looks very useful, just not enough of an explanation on how to actually use it. I can open up my current "old" header files and see/change all the key values. Now how do I transfer these to the new Marlin release headers which have numerous changes of their own?

    View Instructable »
  • Color calibrating RGB LEDs with an Arduino

    I agree that the RGB color intensities vary widely. This sketch will be very helpful, but is a bit confusing. Any chance of adding a video walk through of the process?For the the POWER_RESTRICTION #definePOWER_RESTRICTION 1023 // 1023 = 1 led;and voidcheckRange() { if((values[0]+values[1]+values[2]) > POWER_RESTRICTION)255+255+255 = 765. So the corrections will never execute. What am I missing?

    View Instructable »
  • DrOldies commented on Ontaelio's instructable A 15-LED RGB clock with Arduino core3 years ago
    A 15-LED RGB clock with Arduino core

    Solved. My mistake. If two DM633's are in series, sending 2x the data should push that data through to both DM's unchanged. If MISO is connected, the error data will be pushed out and returned to the master MCU. After reading the datasheet over again, it suggests sending full-on values to get a correct error indication. If error detection is needed, it would be: push a data bit, receive and error bit. I will try this. Thanks for your project discription and code.

    View Instructable »
  • DrOldies commented on Ontaelio's instructable A 15-LED RGB clock with Arduino core3 years ago
    A 15-LED RGB clock with Arduino core

    Yes I tried your code. With the SOMODE/GCK pin at ground or Vcc the DAO output is shown in the attached image. I do not see how this chip can work in series as the datasheet says.I have not found anyone else giving details on using these DM chips. It seemed such a good solution for my project when I bought it.

    View Instructable »
  • DrOldies commented on Ontaelio's instructable A 15-LED RGB clock with Arduino core3 years ago
    A 15-LED RGB clock with Arduino core

    Very nice description of you work. I have tried the DM633 you mention. However, when I connect 2 chips in series, the THF (Thermal flag) and the Open LED error (E) bits on the Serial-out data (DAO) from the first chip is causing problems. Is there any way to turn these error bits off? Any other code using these DM chips?

    View Instructable »