The seesaw firmware that ships with the ATtinyxxx breakouts includes analog capabilities on specific pins. This example reads the analog value of a pin.

Follow the steps on the Arduino page to get set up.

Analog Pins

The ATtiny817 breakout with seesaw firmware provides analog on the following pins:

0-3, 6, 7, 18-20

The ATtiny816 and ATtiny1616 breakout with seesaw firmware provides analog on the following pins:

0-5, 14-16

Example Code

Open up File -> Examples -> Adafruit Seesaw -> analog -> analogRead and upload to your Arduino wired up to the breakout.

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/*
 * This example shows how read the ADC on a seesaw. 
 * The default ADC pins on the SAMD09 Breakout are 2, 3, and 4.
 */

#include "Adafruit_seesaw.h"

Adafruit_seesaw ss;
// on SAMD09, analog in can be 2, 3, or 4
// on Attinyxy7, analog in can be 0-3, 6, 7, 18-20
// on Attinyxy6, analog in can be 0-5, 14-16
#define   ANALOGIN   2

void setup() {
  Serial.begin(115200);
  
  while (!Serial) delay(10);   // wait until serial port is opened
  
  if(!ss.begin()){
    Serial.println(F("seesaw not found!"));
    while(1) delay(10);
  }
  
  Serial.println(F("seesaw started OK!"));
}

void loop() {
  Serial.println(ss.analogRead(ANALOGIN));
  delay(50);  
}

/*
 * This example shows how read the ADC on a seesaw. 
 * The default ADC pins on the SAMD09 Breakout are 2, 3, and 4.
 */

#include "Adafruit_seesaw.h"

Adafruit_seesaw ss;
// on SAMD09, analog in can be 2, 3, or 4
// on Attinyxy7, analog in can be 0-3, 6, 7, 18-20
// on Attinyxy6, analog in can be 0-5, 14-16
#define   ANALOGIN   2

void setup() {
  Serial.begin(115200);
  
  while (!Serial) delay(10);   // wait until serial port is opened
  
  if(!ss.begin()){
    Serial.println(F("seesaw not found!"));
    while(1) delay(10);
  }
  
  Serial.println(F("seesaw started OK!"));
}

void loop() {
  Serial.println(ss.analogRead(ANALOGIN));
  delay(50);  
}

Once you've successfully loaded the sketch onto your board, open the Serial Monitor (Tools->Serial Monitor). Your output should look something like the following.