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Tiny POV

A persistence of vision (POV) display with five 0805 LEDs piggy back on an ATTiny13.

jens-haukeJens Hauke
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A persistence of vision (POV) display with five 0805 LEDs piggy back on an ATTiny13.

This is my second attempt to build a POV display PCB-less with an ATTiny 13. In the first attempt, the LEDs were hanging freely on wires. However, without  anchoring the wires break very quickly while shaking.
This time i glued the LEDs on the backside of the tiny.

It works…

… but it lacks a synchronization. Here is my attempt to catch a "Hello":

After soldering, i covered the wires with some superglue. That's why the result looks a little glossy. No, it is not remaining solder paste :-).

The circuit

  • 1 × ATTiny13 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
  • 5 × 0805 LED Fiber Optics / Emitters
  • 1 × CoinCell holder
  • 1 × CR2032 Coin cell

  • A rebuild

    Jens Hauke • 01/21/2018 at 19:51 • 0 comments

    Very nice, there's another Tiny POV. It's a build from Nikolai Uzunov. He used an ATTiny13 on a small breakout board and a push button between GND and reset.

  • Sourcecode

    Jens Hauke • 01/11/2018 at 17:26 • 0 comments

    I have added the link to the source code to the project description (https://github.com/jensh/attiny-tiny-pov). If you are happy with "Hello", you can flash pov.hex:

    avrdude -v -p attiny13 -cusbasp  -Uflash:w:pov.hex:i

  • Synchronization

    Jens Hauke • 01/10/2018 at 09:37 • 0 comments

    I have attached a "ball tilt sensor" to the reset line (pin 1). Unfortunately the sensor is larger than the display itself. Here is the video. Still not impressive compared to what it looks like in real life. But it's getting better.

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Discussions

Morning.Star wrote 09/19/2018 at 06:11 • point

Right on the back of the chip. Love it. ;-) I was thinking about one of these to use up my spare LEDs from the cube. This is brilliant lol. :-)

  Are you sure? yes | no

Jens Hauke wrote 09/19/2018 at 09:13 • point

After seeing your 4³ cube, I think about putting a cube with 0402LEDs on the back of an ATTiny44 :-).

  Are you sure? yes | no

Morning.Star wrote 09/19/2018 at 13:34 • point

That would be awesome. I'm building a 0402 cube right now, its 4mm wide, projections look like it will be under 5mm in all dimensions.
It hurts ;-) I wish you luck sir!

  Are you sure? yes | no

zakqwy wrote 01/15/2018 at 20:16 • point

awesome!

  Are you sure? yes | no

Hans wrote 01/11/2018 at 15:09 • point

Where can I find the source code?

  Are you sure? yes | no

Jens Hauke wrote 01/11/2018 at 17:14 • point

Hello Hans. I had to extract it from a repo with 1001 other unrelated code snippets. But finally here it is: https://github.com/jensh/attiny-tiny-pov

Please post photos of your creation!

  Are you sure? yes | no

Elliot Williams wrote 01/11/2018 at 11:21 • point

That is so simple and so awesome.  I am going to make one this afternoon when I get a few minutes.

  Are you sure? yes | no

ActualDragon wrote 01/09/2018 at 00:55 • point

Does the superglue act like nail polish and make the circuit waterproof? I dont think id want to find out at any rate. Damn, thats nice soldering though...

  Are you sure? yes | no

Jens Hauke wrote 01/09/2018 at 07:15 • point

I have used stranded wire without insulation and the wires to pin 2 and 3 are crossing each other. Super glue is used as insulation but also to reduce vibrations on the wires. "waterproof" is a good idea - Thanks!

  Are you sure? yes | no

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