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Standalone LED micromatrix display

4x5 micro display with attiny85

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Micromatrix display

Code modified for The 1kB Challenge

Features:
- Attiny85 or smaller ... I have only this
- 20 charlieplexed LED in matrix 4x5
- enough memory for larger text
- standard 6 pin ICSP header for easy programing

testing text "+1234567890 (abcdefghijklmnopqrstuvwxyz) [ABCDEFGIJKLMNOPQRSTUVWXYZ]"

AVR Memory Usage
----------------
Device: attiny85

Program: 880 bytes (10.7% Full)
(.text + .data + .bootloader)
Data: 84 bytes (16.4% Full)
(.data + .bss + .noinit)

Video: https://youtu.be/GU3U1sHmEaM

FONT.H

Character set

h - 2.91 kB - 11/28/2016 at 22:19

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led_finalsmd icsp.brd

Eagle board, I am sorry I lost schematic

brd - 71.83 kB - 11/28/2016 at 22:18

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makefile - 17.10 kB - 11/28/2016 at 22:18

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bat - 124.00 bytes - 11/28/2016 at 22:18

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hex - 2.44 kB - 11/28/2016 at 22:18

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View all 7 files

  • 1 × AtTiny85 Microprocessors, Microcontrollers, DSPs / ARM, RISC-Based Microcontrollers
  • 20 × LED Fiber Optics / Emitters
  • 5 × 100R Resitor Electronic Components / Misc. Electronic Components
  • 1 × 100n Capacitor Non-IC RF, IF, RFID, ZigBee Components / Attenuators
  • 1 × Pushbutton

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Discussions

Radomir Dopieralski wrote 11/30/2016 at 10:40 point

Pretty blinking lights *_*

  Are you sure? yes | no

davedarko wrote 11/29/2016 at 22:04 point

Edge connectors for SPI - that's my stuff :)

  Are you sure? yes | no

Radomir Dopieralski wrote 11/30/2016 at 10:40 point

I always solder the pins to those small parts like that, even if they have through-holes.

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al1 wrote 11/29/2016 at 21:53 point

nice project. I was thinking of  doing something similar for the 1kBit challenge. But so far there is not enough to design it. Now I had to  think about wether my project will be different enough to yours. But this is a nice additional challenge. 

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bobricius wrote 11/30/2016 at 12:08 point

I want try make game console with attiny85 + 4x5 led matrix and use RESET pin ADC and 2 ..3 buttons ... with more memory usage, can be more hardcore. Digispark is good for this because can be reprogrammed with disabled RESET :)

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