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week8

*assignment

--individual assignment:

read a microcontroller data sheet
program your board to do something,
with as many different programming languages
and programming environments as possible

--group assignment:

compare the performance and development workflows
for other architectures

1.Learning from datasheet

I tried so many times to understand this datasheet.
But it was really difficult for me
Because I've never studied this kind of things.
Though actually any other parts in fabacademy were also new to me.
But I think it's the most toughest part I've ever learned until now.
So I refered to websites of other students(Rodrigo, Kurina , Hyejin from Fablab Seoul in Fabacademy 2017)

*important conceptions

-SPI: Serial Peripheral interface (used in Atmel for inputting and reading program or data)
-MOSI: Master Output, Slave Input (output from master) --> to give output
-MISO: Master Inout, Slave Output (output from slave) -->to accept input
-SCK: Serial Clock(Clock means special signal to get programs activate)
-ADC: Analog to digital converter (translating analog value to digital value)
-AVCC: The Analog Supply Voltage pin for Port F and the A/D converter.
-AREF: Voltage Reference that the chip will use to know the range of voltage.(Pin which is the standard for analog VCC)
-PDIP/SOIC : PDIP(Dual in-line package, through hole package), SOIC(Small-outLine integrated circuit)
-EEPROM (128/256/512 Bytes of In-System Programmable EEPROM) : Electrically Erasable Programmable Read-Only Memory, Non-volatile memory.
used in computers and other electronic devices to store small amounts of data that must be saved when power is removed

Actually just the words(on Rodrigo website) were not enough for me to understand perfectly.
So I searched these conceptions on Naver(Korean portal).
It was really helpful.
I added somewhat until I understood.

Programming

1.Learning basics of Arduino

Yeah!! I think around this time you might know I don't have any knowledge of this!! jhhhhhhh.
So I had no choice but to learn at first.
I studied Arduino via youtube.(This is the lecture I learned from.)
Honestly I should've studied more. Because I don't have enough Arduino skills to make my final something.
Next week is break. So I should study Arduino more.

2.Programming

1)My Arduino Code

int led =7;
int button =3;
void setup(){
pinMode(led, OUTPUT);
pinMode(button, INPUT);
}
void loop(){
if(digitalRead(button) == LOW{
digitalWrite(led, HIGH);
delay(1000);
digitalWrite(led, LOW);
delay(1000);
}
}

This is my code. YEAH.... it's really quite easy.
So next time I'll be using more complicated and useful fuction.

2)Problem and Solving

Other settings already done in week6.
I just added 'if' code more.
And then I tried to complie at first.
Something not happened. It was okay.
But when I tried to uploade, I failed....
The error message is "Double check connections and try again or use f to override"
So I searched on Google.

This is the solution from Arduino official website.
I thought I've already done well in my soldering.
So I tried with Source Code.

I downloaded and upgraded sourcecode.
But I got the same error message.

error

I don't remember exactly but I saw Arduino version is important.
So this time I approached to the problem with lowversion.
But fail again.
So I gave up to make it on my own.
I asked my instructor the day after.

error check

Seeing my problem, Rodrigo checked my board.
And he found what had made the problem.

error solve

What is the reason?

That part(blue sketched) was not soldered.
error solve

I had soldered it but after ISP programming when I tried 'rstdisbl'code, I saw 'desolder' on the webpage, so I desoldered that part.
So that made the problem.

Success

At this time, when I uploaded, it worked.
This was the first time I saw the 'done' meassage....!!!

3.Result

It worked well~.

Downloads

Arduino code ino file

2.Fabkit

Materials

1 Atmega 168
1 Crystal 8 MHz (resonator)
1 Capacitor 10 uF
2 Capacitor 0.1 uF
1 Capacitor 1 uF
1 Resistor 10 K
1 Resistor 499 ohm
1 Led
1 FTDI 3.3-5V
1 8 male pin connector
2 8 female pin connector
1 button SMD

Files

trace
hole
outline

Making connection part to ISP

I got fabkit after milling and soldering.
I had one thing left.
I needed to make connection header and pins to connect ISP and fabkit.

I had to compare attiny168 components and fab isp.
So I found the right direction.

First before doing that, I made the connection pins and header.
fabkit

That is the right connetion.
Fabkit:RST,MOSI,MISO,SCK,GND,VCC.
ISP:MISO,VCC,SCK,MOSI,RST,GND.
Both orders are only for that direction(on the picture).

Programming

code

const int ledPin = 13;

void setup() {

pinMode(13, OUTPUT);
}

void loop() {
digitalWrite(13, HIGH);
delay(1000);
digitalWrite(13, LOW);
delay(1000);
}

setting

You should remeber! using 'arduino pro or pro mini' as board.
And then Atmega168(3.3v, 8mhz)-(It's for ur the kind of attiny)

Result

Done!!!!!!

Download

fabkit.ino file