# ATtiny Prototype Board v2

Simplifies circuit prototypying with the ATtiny xx14.

![1stBuild](board-finished.png) 

Features:
- Beadboard (400 pins)
- I/O
  - 4x LED
  - 3x Potentiometer
  - 2x momentary push button
  - 4x Switch
  - 2x 3.5 mm TRS socket
  - 4x banana socket
  - 2/3x I2C
  - 2x Serial
- ATtiny XX14
- FTDI adapter (CH340E Micro USB Serial adapter)
  - UPDI programming
  - USB power
  - Serial debugging


Videos:
- Build: https://youtu.be/CmCrIgkOkTU (no talking)
- Description https://youtu.be/84AR5vEIgwg (German)

# Links

- megaTinyCore Core: https://github.com/SpenceKonde/megaTinyCore
- ATtiny xx14 Pinout https://github.com/SpenceKonde/megaTinyCore/blob/master/megaavr/extras/ATtiny_x14.md
- Installation in Arduino IDE: https://github.com/SpenceKonde/megaTinyCore/blob/master/Installation.md

# Release Notes

## v2.1 changes

Improvements:
- Switch (optional) for I2C
- I2C labels and lines
- Push buttons with opener and closer funtionality
- Moved USART 

Fixes: 
- banana sockets were too close to border
- more space between switches and TRS

## v2.0 changes

- use THT LEDs, resistors, diode
- use slide switch: more reliable and visible
- use only socket header

# Blink All

Use this "blink" code to check proper soldering for all ATtiny pins:

    // BLINK ALL ATtiny xx14

    void setup() {
      pinMode( PIN_PA4, OUTPUT );
      pinMode( PIN_PA5, OUTPUT );
      pinMode( PIN_PA6, OUTPUT );
      pinMode( PIN_PA7, OUTPUT );
      pinMode( PIN_PB3, OUTPUT );
      pinMode( PIN_PB2, OUTPUT );
      
      pinMode( PIN_PB1, OUTPUT );
      pinMode( PIN_PB0, OUTPUT );
      pinMode( PIN_PA0, OUTPUT );
      pinMode( PIN_PA1, OUTPUT );
      pinMode( PIN_PA2, OUTPUT );
      pinMode( PIN_PA3, OUTPUT );
      Serial.begin( 9600 );
    }

    void loop() {
      digitalWrite( PIN_PA4, HIGH );   
      digitalWrite( PIN_PA5, HIGH );   
      digitalWrite( PIN_PA6, HIGH );   
      digitalWrite( PIN_PA7, HIGH );   
      digitalWrite( PIN_PB3, HIGH );   
      digitalWrite( PIN_PB2, HIGH );
        
      digitalWrite( PIN_PB1, HIGH );   
      digitalWrite( PIN_PB0, HIGH );   
      digitalWrite( PIN_PA0, HIGH );   
      digitalWrite( PIN_PA1, HIGH );   
      digitalWrite( PIN_PA2, HIGH );   
      digitalWrite( PIN_PA3, HIGH );   
      Serial.println( "on" );
      delay( 500 );                       
      
      digitalWrite( PIN_PA4, LOW );   
      digitalWrite( PIN_PA5, LOW );   
      digitalWrite( PIN_PA6, LOW );   
      digitalWrite( PIN_PA7, LOW );   
      digitalWrite( PIN_PB3, LOW );   
      digitalWrite( PIN_PB2, LOW );
        
      digitalWrite( PIN_PB1, LOW );   
      digitalWrite( PIN_PB0, LOW );   
      digitalWrite( PIN_PA0, LOW );   
      digitalWrite( PIN_PA1, LOW );   
      digitalWrite( PIN_PA2, LOW );   
      digitalWrite( PIN_PA3, LOW );   
      Serial.println( "off" );
      delay( 500 );                     
    }