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11. Output devices

Instruction

  • individual assignment: add an output device to a microcontroller board you’ve designed, and program it to do something
  • group assignment: measure the power consumption of an output device

What I did in this week

  • practice to set up the output device by using arduino →Group Page
  • try to set it up by using my own breakout board →Group Page
  • measure the powerconsumption of an output device →Group Page
  • add an output device to a microcontroller board you’ve designed →in this page
  • program it to flash LED →in this page

add an output device to a microcontroller board you’ve designed

What I want to make

in order to go ahead with my final project, I need the board to

  • control 2 LEDs as output device
  • control sounds as output device -> sound will be developed until the final project (not in this week)
  • 1 sensor as input device
  • UPDI
  • Serial communication
  • AC

sketch.jpeg

So I choose ATtiny3216 as the micro computer.

Design the breakout board by Eagle

  • create schematic

    schema.png

  • I designed the board in accordance with the schematic

    brd.png

  • drc and finish to design the board

  • export png each by selecting the layer 1 top and document

  • calcurate the milling setting by mods to save as .nc file.

    mods_top.png

    mods_board.png

- load to gsender

Milling time!

  • millng “top” by 1/64 inch endmil

  • millng “board” by 1/32 inch endmil

    milling.jpeg

Soldering

  • schematic > BOM

    bom.png

  • collect the parts I will use

    parts.jpeg

  • Soldering

    sendering.jpeg

  • finish to soldering

    finish.jpeg

  • embed the code which I write in group assignment to the board

/*

NeoPixel LEDs

modified on 7 May 2019
by Saeed Hosseini @ Electropeak
https://electropeak.com/learn/

*/

#include <tinyNeoPixel.h>

#define PIN       10
#define NUMPIXELS 8

tinyNeoPixel pixels = tinyNeoPixel(NUMPIXELS, PIN, NEO_GRB + NEO_KHZ800);

// int delayval = 500; // delay for half a second
// #define DELAYVAL 500 // Time (in milliseconds) to pause between pixels

void NeoFade(int FadeSpeed)
{
int fspeed;
for (int i = 0; i < NUMPIXELS; i++) { pixels.setPixelColor(i, 165, 242, 243); } for (int j = 1; j < 255; j=j+2)
{
pixels.setBrightness(j);
pixels.show();
delay(FadeSpeed);
}
}

void setup() {
pixels.begin();
pixels.clear(); // Set all pixel colors to 'off'

}

void loop() {
NeoFade(50);
}

  • connect to the NeoPixel LED

    fadingled.gif

What I learned in this week

  • Neopixel is so useful because we can control the color and intensity freely
  • In milling the board from zero scratch, we have to think about the position of the parts and wiring without interfering each other parts ( sometimes, it is difficult to wire orderly..)

file

kamidana.brd

kamidana.sch

Acknowledgement

Mr.Tamiya and Ms.Kamei as supportive instructors in Fablab Kannai

and

https://create.arduino.cc/projecthub/electropeak/neopixel-how-to-control-ws2812-rgb-led-w-arduino-46c08f

and You!

Last update: July 9, 2022