Buse RGB LED Panel: Difference between revisions
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Rows do have common CLK and LE signals. This means both halves of the row must be fed in parallel, but rows are entirely independent of each other. | Rows do have common CLK and LE signals. This means both halves of the row must be fed in parallel, but rows are entirely independent of each other. | ||
[[File:Layout.png|center|frameless|600x600px|LED & driver layout]] | [[File:Layout.png|center|frameless|600x600px|LED & driver layout]] | ||
== Mounting == | |||
[[File:Buse-arduino-holder.png|thumb|Legs and mount that was used to hold Arduino Uno]] | |||
Needs figuring out. | |||
Panel got a plenty of mounting holes. | |||
There's a diffuser (from an old LCD?). | |||
TODO: Pics | |||
== Resources == | == Resources == | ||
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Schematic of the 4-bit (9 pins) ESP8266-based driver: https://codeberg.org/lubko/buse004-1/src/branch/main/esp8266-adapter-buse-btc004.pdf | Schematic of the 4-bit (9 pins) ESP8266-based driver: https://codeberg.org/lubko/buse004-1/src/branch/main/esp8266-adapter-buse-btc004.pdf | ||
Mounts: https://codeberg.org/lubko/buse004-1/src/branch/main/mounts-buse-btc004.FCStd | |||
== ESPHome integration == | == ESPHome integration == | ||
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static bool state; | static bool state; | ||
it.image(0, 0, (state = !state) ? id(tux) : id(base48)); | it.image(0, 0, (state = !state) ? id(tux) : id(base48)); | ||
== Pictures == | == Pictures == | ||
Revision as of 11:26, 20 March 2026
What it is
A segment of a panel with 768 RGB LEDs on one side driven by chains shift registers on the other side.
The PCB is marked:
BTC004.1 24x32_10 RGB
Not sure which city is it operated in. Brno has green only panels and Bratislava got RGB but of different size.
Theory of operation
LEDs are organized into 24 x 32 pattern on one side, drivers are organized into a grid of 18 x 16 drivers. Three lines of LEDs snake around and are driven by a line of drivers on the other side.
Rows do have common CLK and LE signals. This means both halves of the row must be fed in parallel, but rows are entirely independent of each other.
Mounting
Needs figuring out.
Panel got a plenty of mounting holes.
There's a diffuser (from an old LCD?).
TODO: Pics
Resources
Repository with sources to schematic, Arduino driver and ESPHome component: https://codeberg.org/lubko/buse004-1
Partial schematic of the panel: https://codeberg.org/lubko/buse004-1/src/branch/main/buse-btc004.pdf
Schematic of the 8-bit Arduino-based driver: https://codeberg.org/lubko/buse004-1/src/branch/main/arduino-adapter-buse-btc004.pdf
Schematic of the 4-bit (9 pins) ESP8266-based driver: https://codeberg.org/lubko/buse004-1/src/branch/main/esp8266-adapter-buse-btc004.pdf
Mounts: https://codeberg.org/lubko/buse004-1/src/branch/main/mounts-buse-btc004.FCStd
ESPHome integration
external_components:
- source:
type: git
url: https://codeberg.org/lubko/buse004-1
path: ./
components: [ btc004 ]
image:
- file: https://codeberg.org/lubko/buse004-1/raw/branch/main/tux.xpm
type: rgb565
id: tux
- file: https://codeberg.org/lubko/buse004-1/raw/branch/main/48.gif
type: rgb565
id: base48
display:
platform: btc004
le_pins: [ GPIO05 ]
clk_pins: [ GPIO04, GPIO15, GPIO02, GPIO00 ]
data_pins: [ GPIO16, GPIO14, GPIO12, GPIO13 ]
update_interval: 10666ms
lambda: |-
static bool state;
it.image(0, 0, (state = !state) ? id(tux) : id(base48));
Pictures
-
Whole LED array -
Arduino driver mounted on the back -
In operation -
LED side closeup with markings -
Back closeup
TODO
Port to ESP*- Hook to Home Assistant
- Figure out physical mounting
- hailsatan