January 2020 Hodgepodge





Chanukah Display 2019

Two displays total over 4,500 NeoPixel LEDs.  (Built to survive 60 MPH winds).
  Each display is controlled by a Teensy 3.2 paired with an OCTO Shield.





Minorah Car Parade in LA







 Razzler: POV LED Top 2018  

 

Uses STM32 processor and MPU-6050 to get Angular Velocity 
Wood Milling required, NO? Design Files.
https://nathanpetersen.com/2018/05/15/razzler-pov-led-top/
https://www.hackster.io/nathanpetersenn/razzler-pov-led-toy-top-4fee5c




Onstar like service for Cyclists


https://create.arduino.cc/projecthub/jesus-soriano/never-ride-alone-204257

 Using a (mainly) European sigfox.com data messaging cloud service, whose coverage map serves major U.S. cities and the ocean off the coast of L.A. extending past Catalina.

 Typical; service fee for 50 (12-bytes) messages a day: $22 a year.

The Arduino MKR board for this service is currently sold in Europe only.

More Example Projects



 Those other IO pins on 32 Bit Processors



I2S  Faster serial interface for digital audio
       Typical modern studio A-D converter may capture 2X 24 bit signals @ 48kh

Teensy Audio code GUI

Teensy Audio Tutorial Video


CAN Bus  
   "Controller Area Network" (no host) 2 wire communication protocol for Automobile electronics.   
      The WIKI write-up suggests some vehicles can have up to 70 ECUs that need to communicate.
                  

Can Bus code lib for Teensy 3 series


 S/PDIF 
  (on Teensy 4.0) only)  is a digital audio standard used in stereo systems connecting via an RCA connector or fiber optic cable.  (I have not looked into what sort of driver requirements a Teensy may require)


Sipeed Longan Nano Risc-V board

 RISC-V based low end board $4.90 list at Seeedstudio.com, delivered total cost about $8
108mhz, 128KB Flash, 32KB SRAM, micro SD socket, RTC crystal
0.96inch 160x80 IPS RGB LCD (SPI interface) and case
Marketed compared to the M3 STM32 ("1/3 the power")

Program with platformio.org  or recently added Arduino plugin (not for OSX)


Platformia


Platformia knows some 700 different boards
It is a plugin for the (free) Microsoft Visual Studio Code app

This is a Russian development which concerns some people, full version free, optional paid support.



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