ATtiny 24/44/84 datasheet

-Attiny44A is RISC archetecture, AVR 8-bit microcontroller, 1.8-5.5V operating voltage, internal oscillartor 8MHz - 128kHZ(see clock sources p25) external 20MHz

-Attiny44 has
1 VCC pin,
1 ground pin,
4 PROTB pins,
8 PORTA pins


Some important vocabularies from Rodrigo's page

• -SPI: Serial Peripheral interface


• -MOSI: Master Output, Slave Input (output from master}


• -MISO: Master Inout, Slave Outpu (output from slave)
• SCK: Serial Clock


• -ADC: Analog to digital converter (translating analog to digital)


• -AREF: Voltage Reference that the chip will use to know the range of voltage.


• -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.

Hello.echo using Arduino IDE

-To install ATtiny board follow the highlowtech.orgpage step by step.


-select the board, processor, clock, and programmer.
-select burn the bootloader. bootloader tells the hardware where to look and how to get running when you start things up.

-LED is pin3, Button is pin7.

-Check ATtiny45/44 pin information from this image.

-upload from sketch>upload using programmer. first time I just uploaded using the button

Fabkit

-Download files
taces
hole
outline
schemtic
board


-Check the componet values and places with Board file using info button.

-Up right, I made a big hole, because I didn't invert the hole image file. So I pause milling, After inverting the hole file, restart milling.

-The big hole was VCC connection. So, it was ok to ignore it since there were more VCC connection. But I tried to fix it with jumper.

-I connected header from back to protect short from big hole, as you see the hole is very close from the left GND line. When I tried to cut the jumper, the red plastic protector is cut, too. It would be better not to cut the red protector.

-Finished the soldering, Check the connection. Everything was good.

-To find the pin order same with FabISP and Fabkit, check the grinned header order first, then find the pin one by one.
-FabISP:GND, Reset, MOSI, SCK, VCC, MISO in order and Fabkit:VCC, GND, SCK, MISO, MOSI, Reset in order
.
-Reset pin has to be conncected when butning the bootload.

-select the board, processor, clock, and programmer.

-LED_BUILTIN can be changed pinmode13.

-upload from sketch>upload using programmer.