Version 2

 

Now, step back and do it right.

I want something that looks metal. And this 3D printed stuff it kinda’ rough.

Putting everything together..


  1. BulletA screen for choosing songs.

  2. BulletHardware to actually play the songs.

  3. BulletSome sort of mass storage to hold the music.

  4. BulletAn amplifier to drive the speakers.

  5. BulletSpeakers. Well..

  6. BulletEarbuds for now.

  7. BulletA processor to run everything.

  8. BulletA 3D designed and printed case.

  9. BulletFigure out how control SD card.

  10. BulletWrite code for the .mp3 player.

  11. BulletPatch the .mp3 library to start faster.

  12. BulletTry to get some more sleep.

  13. BulletSPI bus that functions correctly.

  14. BulletProcessor mount?

  15. BulletComplete SPI rewrite.

  16. BulletComplete redesign of the Development system.

  17. Bullet3D print finish quality issues.

  18. BulletNeed simple case to demo. problem.


This little guy was a bus board I’d developed a few years ago for our quadcopters. All the columns are bussed together. We’d already reused this on the Dragon project and it looked like it would be a perfect fit for this project. Much handier design than I thought at the time I made them.



30 Awg silicon wires of every color I could get my hands on. Space would be at a premium so this would go a long way to helping with that. Also, as a unlooked for benefit. Silicon insulation does not melt when a hot solder iron touches it. Doing tiny rework this came in way handier than I ever figured. I’m never going back!



The control panel started out as a copy of my Breakout game case.


I printed off an extra to build my new “Development system.”

 
Inside the control panel. The OLED is mounted and I made up a little grid that would fit in there to mount the processor and the SPI bus board. You can see the OLED is already hooked up.


Bottom row, OLED, Next row up Teensy, Next in line, .MP3 player. What a great help in getting these wires sorted out!



I even went as far to make up a color standard for the SPI bus wires.







<< Nothing works!     Crossing ‘T’s >>

 

I’m a firm believer in “Version 2”. Many projects, that are both interesting and successful, follow a common pattern. Cobble something together with what’s available just to “Get it running.” And then, using what has been learned, build Version 2.