Hardware Update<\/h2>\n\n\n\n
If you didn’t use RGB capable (clear-ish) key switches like I did, installing per key lighting also means swapping your switches too. As long as they aren’t all very well hot glued in, it shouldn’t be too bad to swap. I swapped them one by one, de-soldering them, pulling the one switch out, replacing it with the new one and soldering in the new one.<\/p>\n\n\n\n After all the switches are soldered in, the LEDs can be installed. I slid the LEDs under the wiring for the switches and into position. It’s a bit finicky if you don’t have much slack on the wires between the switches, but the LEDs are small enough to fit through the gaps.<\/p>\n\n\n\n I used hot glue on the edges of the LEDs to keep them in place in the grid. They should align reasonably well with the middle LED in the little notch in the middle key switch. I also used this notch as the orienting piece to determine which direction the LEDs will run.<\/p>\n\n\n\n With the LEDs in place, we need to wire the LEDs to VIN, GND and D2. I soldered them to the top of the PCB without taking it out of the case. <\/p>\n\n\n\n With the entire thing wired up, tested, and reassembled, we have LIGHTING!<\/p>\n\n\n\n With the LEDs in place, I updated the ESPHome YAML and uploaded the new firmware to the ESP.<\/p>\n\n\n\n To make sure all the lights are numbered correctly in Home Assistant. Activate each light in home assistant, noting which button they come from, then update the YAML config so that it all matches what you’re expecting in my case, my LEDs are not going left to right, but top to bottom.<\/p>\n\n\n\n![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_1911338565523167804508933738-1024x771.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_1921361233867140434720201641.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_194620898238215618542657379-1024x771.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_1952501096734261877936794165-1024x771.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_1946250342994096037217479554-1024x771.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_1946297796884176109494439933.jpg\")
![\"\"](\"https:\/\/lab.rapternet.us\/wp-content\/uploads\/2024\/09\/pxl_20240914_2006240418771947157664137913-1024x771.jpg\")
ESPHome YAML<\/h2>\n\n\n\n
# Configure LED
light:
- platform: neopixelbus
variant: WS2812
pin: 4
num_leds: 9
flash_transition_length: 500ms
type: GRB
id: light_strip
name: \"${friendly_name} LED\"
restore_mode: ALWAYS_OFF
effects:
- addressable_lambda:
name: \"My Custom Effect\"
update_interval: 16ms
lambda: |-
for (int i = it.size() - 1; i > 0; i--) {
it[i] = it[i - 1].get();
}
it[0] = Color::random_color();
it.range(0, 8) = Color::BLACK;
it.all().fade_to_black(10);
- addressable_lambda:
name: \"Wipe In\"
update_interval: 12ms
lambda: |-
static int x = 0;
if (initial_run) {
x = 0;
it.all() = ESPColor::BLACK;
}
if (x < it.size()) {
it[x] = current_color;
x += 1;
delay(500);
}
- addressable_lambda:
name: \"Wipe Out\"
update_interval: 12ms
lambda: |-
static int x = 0;
if (initial_run) {
x = it.size();
}
if (x > 0) {
x -= 1;
it[x] = ESPColor::BLACK;
}
- platform: partition
name: \"Key 3 Light\"
id: activity_led
segments:
- id: light_strip
from: 0
to: 0
- platform: partition
name: \"Key 6 Light\"
segments:
- id: light_strip
from: 1
to: 1
- platform: partition
name: \"Key 9 Light\"
segments:
- id: light_strip
from: 2
to: 2
- platform: partition
name: \"Key 8 Light\"
segments:
- id: light_strip
from: 3
to: 3
- platform: partition
name: \"Key 5 Light\"
segments:
- id: light_strip
from: 4
to: 4
- platform: partition
name: \"Key 2 Light\"
segments:
- id: light_strip
from: 5
to: 5
- platform: partition
name: \"Key 1 Light\"
segments:
- id: light_strip
from: 6
to: 6
- platform: partition
name: \"Key 4 Light\"
segments:
- id: light_strip
from: 7
to: 7
- platform: partition
name: \"Key 7 Light\"
segments:
- id: light_strip
from: 8
to: 8<\/pre>\n\n\n\nAutomations making use of it<\/h2>\n\n\n\n