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sloth badge

I guess I can't stop doing badges. Really love the @pimoroni #bearables - but they don't have sloths :(

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there are some nifty tricks hidden in the bearables badges, a cool menu etc. I want to replicate the behaviour with an ATTINY13A.

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sloth.ino

ino - 3.81 kB - 01/01/2018 at 13:32

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sloth_final.sch

sch - 310.99 kB - 01/01/2018 at 13:30

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sloth_final.brd

brd - 154.46 kB - 01/01/2018 at 13:30

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sloth_final.pdf

Adobe Portable Document Format - 21.78 kB - 11/24/2017 at 16:36

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sloth_final_production.dxf

AutoCAD DXF - 76.72 kB - 11/24/2017 at 16:36

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View all 6 files

  • new design!

    davedarko • 02/20/2018 at 22:59 • 2 comments

    After a fallout with pimoroni I'm no longer allowed to use the sloth badge design. So here is the new design:

    Just kidding! I've bought a soic8 adapter that I will solder into place and make this a dedicated SOIC8 programmer for the kit chips! I haven't heard from pimoroni in a while though, need to ping them in a tweet some time.

  • current code, anyone any ideas to save space?

    davedarko • 02/19/2018 at 10:28 • 8 comments

    I won't lie, this feels messy. This currently features 5 animations, where 2 of them are just "played accelerating" . 

    Some things I'm not happy with:

     - the button does not work within the animations, so you need to push the button until the animation cycle is over

    #include <avr/sleep.h>
#define nop() asm volatile("nop")
boolean leds_on = true;

byte badly_programmed_counter = 0;
byte animation_counter_max = 5;
byte animation_counter = 0;

// we need two frames with 8 bits for 12 LEDs
byte frame1 = 0;
byte frame2 = 0;

// animation where every third LED is glowing
// I could shift that continuosly and drop 4 bytes
const byte three_apart_length = 6;
const byte three_apart[three_apart_length] PROGMEM = {
  0b10010010, 0b01000000,
  0b01001001, 0b00100000,
  0b00100100, 0b10010000,
};

// this one is huge
// is there a math function to do that instead?
const byte updown_length = 14;
const byte updown[updown_length] PROGMEM = {
  0b00100000, 0b00000000,
  0b01010000, 0b00000000,
  0b10001000, 0b00000000,
  0b00000100, 0b00010000,
  0b00000010, 0b00100000,
  0b00000001, 0b01000000,
  0b00000000, 0b10000000,
};

// that's just blinking each led 
// maybe inverting the data bitwise does the trick
const byte two_apart_length = 4;
const byte two_apart[two_apart_length] PROGMEM = {
  0b10101010, 0b10100000,
  0b01010101, 0b01010000,
};

// should have taken a switch, sleep stuff is huge
ISR(INT0_vect) {
  sleep_disable();
  leds_on = true;
}

void setup()
{
  // this is for the button setup
  PORTB |= (1 << PB1);
  DDRB &= ~(1 << PB1);

  shutdown_chip();
}

void loop()
{
  if (leds_on)
  {
    cli();
    leds_on = false;

    // I call it that, because the millis stuff
    // and the interrupts collided and broke
    badly_programmed_counter = 0;
  }

  // fancy way of checking the button state
  if (!(PINB & (1 << PB1)))
  {
    badly_programmed_counter++;
    my_100ms_delay();

    // check if button was released before time
    // so animation index can be incremented
    // maybe a modulo with animation_counter_max
    // safes space
    if ( (PINB & (1 << PB1)) )
    {
      badly_programmed_counter = 0;
      animation_counter++;
      if (animation_counter == animation_counter_max)
      {
        animation_counter = 0;
      }
      charlie(animation_counter);

      // calling a function instead of writing it down
      // 5 times helps already
      for (byte b = 0; b < 5; b++) my_100ms_delay();
    }

    if (badly_programmed_counter >= 7)
    {
      // blink when shutdown is immanent
      for (byte b = 0; b < 5; b++) blip();
      shutdown_chip();
    }
  }
  else
  {
    animate_leds();
    badly_programmed_counter = 0;
  }
}

// this is probably already at it's best
void charlie (byte var) {
  leds_off();

  switch (var) {
    case 0: // 1
      DDRB |= (1 << PB0) | (1 << PB2); // output
      PORTB |= (1 << PB0); // HIGH
      break;
    case 1: // 2
      DDRB |= (1 << PB0) | (1 << PB2); // output
      PORTB |= (1 << PB2); // HIGH
      break;
    case 2: // 3
      DDRB |= (1 << PB2) | (1 << PB3); // output
      PORTB |= (1 << PB2); // HIGH
      break;
    case 3: // 4
      DDRB |= (1 << PB2) | (1 << PB3); // output
      PORTB |= (1 << PB3); // HIGH
      break;
    case 4: // 5
      DDRB |= (1 << PB3) | (1 << PB4); // output
      PORTB |= (1 << PB3); // HIGH
      break;
    case 5: // 6
      DDRB |= (1 << PB3) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      break;
    case 6: // 7
      DDRB |= (1 << PB0) | (1 << PB3); // output
      PORTB |= (1 << PB0); // HIGH
      break;
    case 7: // 8
      DDRB |= (1 << PB0) | (1 << PB3); // output
      PORTB |= (1 << PB3); // HIGH
      break;
    case 8: // 9
      DDRB |= (1 << PB2) | (1 << PB4); // output
      PORTB |= (1 << PB2); // HIGH
      break;
    case 9: // 10
      DDRB |= (1 << PB2) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      break;
    case 10: // 11
      DDRB |= (1 << PB0) | (1 << PB4); // output
      PORTB |= (1 << PB0); // HIGH
      break;
    case 11: // 12
      DDRB |= (1 << PB0) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      break;
    default...
    Read more »

  • everything ready for a small run

    davedarko • 01/01/2018 at 13:41 • 2 comments

    After a little email exchange with Paul from pimoroni we agreed on me doing a small run of badges on @Tindie  is alright with everyone, including their designer, so I will finally do a batch run with @oshpark for the first time.

    The code has some potential, needs some cleaning up and some options for animations like I have added to my #K.I.T.T. - KNIGHT RIDER badge/brooch. I should use a higher value of resistors for the LEDs, they blink quite bright.

    Part wise I'm all set, everything is ordered so I can sell them as kits, but might add soldered up options like I did with Kitt. 

  • ahhh... I need help, I don't see it

    davedarko • 12/09/2017 at 22:53 • 8 comments

    Somewhere along I had it go to sleep just fine, but it didn't wake up. Now it wakes up fine, but doesn't want to go to sleep. Seems like I don't have the millis stuff right anymore, I don't get to where the comment "// HOW DO I GET HERE?" is. Too tired to see it, gonna go to bed.

    #include <avr/sleep.h>

boolean leds_on = true;

unsigned long previousMillis = 0;
unsigned long currentMillis = 0;
const long interval = 1000;

ISR(INT0_vect) {
  sleep_disable();
  leds_on = true;
}

void setup() {
  // put your setup code here, to run once:
  PORTB |= (1 << PB1); // input
  DDRB &= ~(1<<PB1);

  shutdown_chip();
}

void loop() {
  
  
  if (leds_on)
  {
    cli();
    leds_on = false;
  }

  currentMillis = millis();
  if ( !(PINB & (1 << PB1)) )
  {
    charlie(3);
    
    if (currentMillis - previousMillis >= interval)
    {
      // HOW DO I GET HERE?
      charlie(5);
      delay(2000);
      shutdown_chip();
    }
    else
    {
      charlie(2);
    }
  }
  else
  {
    animate_leds();
    previousMillis = currentMillis;
  }
}

void shutdown_chip()
{
  leds_off();

  /* Clear WDRF in MCUSR */
  MCUSR &= ~(1 << WDRF);
  /* Write logical one to WDCE and WDE */
  /* Keep old prescaler setting to prevent unintentional time-out */
  WDTCR |= (1 << WDCE) | (1 << WDE);
  /* Turn off WDT */
  WDTCR = 0x00;

  ADCSRA &= ~(1 << ADEN); // turn off adc

  GIMSK |= (1 << INT0);
  GIMSK |= (1 << PCIE);

  set_sleep_mode(SLEEP_MODE_PWR_DOWN);
  sleep_enable();
  sei(); // Enable global interrupts
  sleep_cpu();
  sleep_disable();
}

void animate_leds()
{
  for (int i = 0; i < 12; i++) {
    charlie(i);
    delay(50);
  }
  for (int i = 0; i < 12; i++) {
    charlie(11 - i);
    delay(50);
  }
}

void leds_off()
{
  DDRB &= ~(
            (1 << PB0) |
            (1 << PB2) |
            (1 << PB3) |
            (1 << PB4)
          );
  PORTB &= ~(
             (1 << PB0) |
             (1 << PB2) |
             (1 << PB3) |
             (1 << PB4)
           );
}

void charlie (int var) {
  leds_off();

  switch (var) {
    case 0: // 1
      DDRB |= (1 << PB0) | (1 << PB2); // output
      PORTB |= (1 << PB0); // HIGH
      PORTB &= ~(1 << PB2); // LOW
      break;
    case 1: // 2
      DDRB |= (1 << PB0) | (1 << PB2); // output
      PORTB |= (1 << PB2); // HIGH
      PORTB &= ~(1 << PB0); // LOW
      break;
    case 2: // 3
      DDRB |= (1 << PB2) | (1 << PB3); // output
      PORTB |= (1 << PB2); // HIGH
      PORTB &= ~(1 << PB3); // LOW
      break;
    case 3: // 4
      DDRB |= (1 << PB2) | (1 << PB3); // output
      PORTB |= (1 << PB3); // HIGH
      PORTB &= ~(1 << PB2); // LOW
      break;
    case 4: // 5
      DDRB |= (1 << PB3) | (1 << PB4); // output
      PORTB |= (1 << PB3); // HIGH
      PORTB &= ~(1 << PB4); // LOW
      break;
    case 5: // 6
      DDRB |= (1 << PB3) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      PORTB &= ~(1 << PB3); // LOW
      break;
    case 6: // 7
      DDRB |= (1 << PB0) | (1 << PB3); // output
      PORTB |= (1 << PB0); // HIGH
      PORTB &= ~(1 << PB3); // LOW
      break;
    case 7: // 8
      DDRB |= (1 << PB0) | (1 << PB3); // output
      PORTB |= (1 << PB3); // HIGH
      PORTB &= ~(1 << PB0); // LOW
      break;
    case 8: // 9
      DDRB |= (1 << PB2) | (1 << PB4); // output
      PORTB |= (1 << PB2); // HIGH
      PORTB &= ~(1 << PB4); // LOW
      break;
    case 9: // 10
      DDRB |= (1 << PB2) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      PORTB &= ~(1 << PB2); // LOW
      break;
    case 10: // 11
      DDRB |= (1 << PB0) | (1 << PB4); // output
      PORTB |= (1 << PB0); // HIGH
      PORTB &= ~(1 << PB4); // LOW
      break;
    case 11: // 12
      DDRB |= (1 << PB0) | (1 << PB4); // output
      PORTB |= (1 << PB4); // HIGH
      PORTB &= ~(1 << PB0); // LOW
      break;
    default:
      ;
  }
}

  • bearables power consumption

    davedarko • 11/30/2017 at 14:32 • 0 comments

    seems like they use 1.1mA in sleep mode, which isn't really good for a coin cell that has around 230mAh of power - 9 days of doing nothing o.O so with the right settings my sloth badge will already last a lot longer! nice :3

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Discussions

Blecky wrote 09/14/2018 at 14:49 • point

Heya Dave, just a quick one. What are the rough specs (forward V, current and intensity) of the LEDs you are using to swap some out to maintain similar brightness?

  Are you sure? yes | no

davedarko wrote 09/14/2018 at 16:11 • point

oof, good one, I just bought them cheap on ebay, but they had this:

https://cdn.hackaday.io/images/7008311536941468707.jpg

  Are you sure? yes | no

Blecky wrote 09/15/2018 at 03:38 • point

Perfect :D

  Are you sure? yes | no

davedarko wrote 09/17/2018 at 08:56 • point

I'd be happy to add you here if you want to share any of your changes btw

  Are you sure? yes | no

Dylan Brophy wrote 11/30/2017 at 05:36 • point

I want to give this as a gift for Christmas.  DO I have to order boards or do you sell them?

  Are you sure? yes | no

davedarko wrote 11/30/2017 at 09:29 • point

not selling them yet, I don't even have my first prototype boards here :D if you still want to try it, feel free to do your own sanity check for the boards and order them, I can't make any promises, but it should work. Software isn't done either, but I wanted to work on it this evening. Thank you for your interest :)

  Are you sure? yes | no

EK wrote 11/25/2017 at 21:34 • point

CUTE!

  Are you sure? yes | no

deʃhipu wrote 11/25/2017 at 10:29 • point

Oh, and I see you have a push-button for a switch — experimenting with the sleep modes?

  Are you sure? yes | no

davedarko wrote 11/25/2017 at 10:47 • point

yup :) got a proof of concept for the power down to 0.1uA (if I recall correctly, what my multimeter showed (correctly?) :D that was important to me, to play around with that and get to know the registers etc a bit better

  Are you sure? yes | no

deʃhipu wrote 11/25/2017 at 10:28 • point

An interesting way of doing dithering. Have you considered using dots instead, like the newspapers do for grey-scale?

  Are you sure? yes | no

davedarko wrote 11/25/2017 at 11:35 • point

definitely thought of that, but this is in the style of the bearables by pimoroni and it's supposed to blend in ;) https://shop.pimoroni.com/collections/bearables/products/bearables-bear-led-badge

  Are you sure? yes | no

deʃhipu wrote 11/25/2017 at 16:54 • point

Oh, I see, that makes sense now!

  Are you sure? yes | no

davedarko wrote 11/25/2017 at 07:39 • point

well great, now I need a sloth suit :D

  Are you sure? yes | no

oshpark wrote 11/25/2017 at 00:21 • point

Love the design!

  Are you sure? yes | no

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