Dead Person Switch

The Assignment⌗

For this assignment, we were asked to 1. make an ATtiny85 programming jig, 2. create an interaction/project with the ATtiny85, along with any sensor and/or output you choose.

I decided to make a simple “Dead Person’s Switch” (dead man’s switch). Two momentary push buttons need to be pressed at the same time in order for an LED to turn on.

Building⌗

Programming Jig⌗

Following the instructions provided to us (programming an ATtiny85), I created the programming jig. The jig is intedned to be used by pluggiing it into an Arduino UNO. The Arduino UNO acts as a programmer for the ATtiny85.

Breadboard⌗

Code⌗

The code on the ATtiny85.

const int leftButtonPin = 3;
const int rightButtonPin = 4;
const int ledPin = 1;

int leftButtonState = 0;
int rightButtonState = 0;

void setup() {
  pinMode(leftButtonPin, INPUT);
  pinMode(rightButtonPin, INPUT);
  pinMode(ledPin, OUTPUT);
}

void loop() {
  leftButtonState = digitalRead(leftButtonPin);
  rightButtonState = digitalRead(rightButtonPin);

  if (leftButtonState == HIGH && rightButtonState == HIGH) {
    digitalWrite(ledPin, HIGH);
  } else {
    digitalWrite(ledPin, LOW);
  }
}

The Final Thing⌗