tiny-ws2812-desklight

KO | EN

gitlite — search

#javascript #python #react #ai #machine-learning #rust #linux #nodejs #windows #cli #vue #pytorch #mcp #ios

tiny-ws2812-desklight

(★ 10)

ATTiny10 powered WS2812 RGB LED strip: hard- and firmware design

tiny-ws2812-desklight 최신버젼 다운로드

최종 버전 다운로드 (.zip)

// repository documentation

Was this content helpful?

★ 0 (0 ratings)

ATTiny10-powered WS2812 desklight
=================================

Controller firmware and hardware for a very simple desklight that has a button
and a digital encoder for color/brightness selection.

Controls a strip of WS2812 RGB LEDs which could e.g. be mounted at the bottom
edge of your desktop monitor facing down towards the desk surface.

![PCB v1.0 bottom side photo](https://github.com/dpiegdon/tiny-ws2812-desklight/blob/master/hardware/production/tiny-ws2812-desklight-v1.0_bottom-pcb.jpg)

(Above: bottom side of v1.0 PCB)

Authors
-------

David R. Piegdon <dgit@piegdon.de>

License
-------

All files in this repository are released unter the GNU General Public License
Version 3 or later. This includes the schematic, the routed PCB and the firmware
as well as the documentation and accompanying materials. See the file COPYING
for more information.

Device interface
================

The rotary encoder has a button and can be rotated in both directions. The
button cycles through different modes. In each mode you change a different
variable by rotating the encoder:

* Mode 1: change brightness

* Mode 2: change color

* Mode 3: change number of enabled LEDs

* Mode 4: change starting position of enabled LEDs

Pressing the button for more than half a second resets all values to their
defaults.

Firmware
========

You probably have to use a recent AVR-GCC Version for compilation. Version 5.4.0
is good, 7.3.0 yields even better results. As the ATTiny10 is very
space-constrained, older gcc versions may not optimize well enough to meet the
space-constrains with the current feature set.

If you want to change the number of lights in the firmware, please do so in
`ws2812.h`. If you know what you are doing, you can also change the assignment
to `light_count` in the firmware files (in `ws2812_init()`, `calca_init()`, if
you don't want to recompile.)

Note that with the current master branch firmware you can use up to 126
LEDs. The actual constraint is something like `lightcount <=
max_value(int8_t)-1`.

Firmware Changelog
------------------

### v1.0

Supports four modes (brightness/color/enable-count/start-pos),
should support 63 LEDs. Required GCC 7.3.0 or similar to fit
size-constraints.

### v1.1

Improved binary size. Now supports building with GCC 5.4.0.

### v1.2

Support up to 126 LEDs.

### v1.3

Fixed rotary dial directions to be consistent across modes.

### v1.4

Fixed WS2812 timings to properly work with all LEDs. Allow `LIGHT_COUNT` to be
overriden via `CXXFLAGS`.

### master

(no more changes)

Hardware
========

You can find a Kicad-based schematic in the hardware directory.

The firmware is written for an Atmel ATTiny10. The latest version does not use
the ADC anymore, so an ATTiny9 should do fine, too.

Connect a 5V 1500mA (or better 2000mA) power supply for a strip with 34 LEDs.

Hardware Errata
---------------

### v1.0

Version 1.0 of hardware is fully functional and works perfectly fine.
However, a few changes might be useful when doing another revision:

* Schematic: Remove comment on questionable 1K resistor value. 1K resistors
   between uC and encoder are ok. Comment in schematic was already removed
   shortly after tag v1.0, as already can be seen in released PDF schematic of
   v1.0.

* Schematic/BOM: Create a BOM. Well, maybe just specify the kind of rotary
 encoder. (Look for EC11 digital encoder on your favourite cheap
 chinese parts supplier)

* PCB: Increase drill size for power lines on P2 and P3, so power cables can
   be soldered directly to PCB easily.

* PCB: Mark RESET pin of TPI so it can be found easily when re-flashing a uC.

* PCB: Mark TPI interface as "TPI".

tiny-ws2812-desklight

tiny-ws2812-desklight 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

tiny-ws2812-desklight

tiny-ws2812-desklight 최신버젼 다운로드

오늘의 추천 프로젝트

Was this content helpful?

Recent Feedback

Download README