Smart Home Automation Forum - KC868-AP / ADR

KC868-AP — Power injection, multi-PSU, and amplifier support

Wed, 20 Aug 2025 16:03:43 +0800

Hello,
Could you please confirm these points for KC868-AP (PWM dimmer for LED strips):

Power injection: Is it supported to inject extra DC power along the LED strip? Any rules or limits?
Multiple PSUs: Is it allowed to use more than one DC power supply for different channels/zones? If yes, how should they be connected? If no, must we use only one PSU?
Amplifier / power repeater: Can the KC868-AP PWM outputs drive an external analog LED amplifier (RGB/RGBW) so the strip is powered by a local PSU? Any specs/models to follow?

Thank you.

KC868-AP JSON not valid

Thu, 17 Apr 2025 19:49:05 +0800

Have KC868-AP

Code:
Board Model

KC868_AP

Software Version

v2.2.12

Build Date

Feb 28 2025 14:41:30

Serial Number

C82E18C85DFC

I try integrate it to Home Assistant over MQTT, but it not working.
I have this template:

Code:
mqtt:

  light:

  - name: 'KC868-AP-1-DIMM-1'

    unique_id: KC868-AP-1-DIMM-1

    schema: template

    command_topic: "KC868_AP/C82E18C85DFC/SET"

    state_topic: "KC868_AP/C82E18C85DFC/STATE"

    command_on_template: >

      {% if brightness is defined %}

      {"dac1":{"value":{{(brightness / 255  * 100) | int - 1}}}

      {% else %}

      {"dac1":{"value":255}}

      {% endif %}

    command_off_template: >

      {"dac1":{"value":0}}

    state_template: >

      {% if value_json.dac1.value == 0 %}

      off

      {% else %}

      on

      {% endif %}

    brightness_template: >

      {{ (value_json.dac1.value / 99 * 255) | int }}

when I change dimmer value in HA, message received on device and dimmer value is changed, but light state in HA still Unknown.
I try to check status JSON in linter and it have mistake:

Code:
{"input1":{"value":false},"input2":{"value":false},"input3":{"value":false},"input4":{"value":false},"input5":{"value":false},"input6":{"value":false},"input7":{"value":false},"input8":{"value":false},"input9":{"value":false},"input10":{"value":false},"input11":{"value":false},"input12":{"value":false},"input13":{"value":false},"input14":{"value":false},"input15":{"value":false},"input16":{"value":false},"input17":{"value":false},"input18":{"value":false},"output1":{"value":false},"output2":{"value":true},"dac1":{"value":0},"dac2":{"value":0},"dac3":{"value":0},"dac4":{"value":0},"dac5":{"value":0},"dac6":{"value":0},"dac7":{"value":0},"dac8":{"value":0},"dac9":{"value":0},"dac10":{"value":0},"dac11":{"value":0},"dac12":{"value":0},"dac13":{"value":0},"dac14":{"value":0},"dac15":{"value":0},"dac16":{"value":0},}

after "dac16":{"value":0}, has extra comma.
if I publish valid JSON in status topic without extra comma HA gets status of dimmer channel correct:

Code:
{"input1":{"value":false},"input2":{"value":false},"input3":{"value":false},"input4":{"value":false},"input5":{"value":false},"input6":{"value":false},"input7":{"value":false},"input8":{"value":false},"input9":{"value":false},"input10":{"value":false},"input11":{"value":false},"input12":{"value":false},"input13":{"value":false},"input14":{"value":false},"input15":{"value":false},"input16":{"value":false},"input17":{"value":false},"input18":{"value":false},"output1":{"value":false},"output2":{"value":true},"dac1":{"value":0},"dac2":{"value":0},"dac3":{"value":0},"dac4":{"value":0},"dac5":{"value":0},"dac6":{"value":0},"dac7":{"value":0},"dac8":{"value":0},"dac9":{"value":0},"dac10":{"value":0},"dac11":{"value":0},"dac12":{"value":0},"dac13":{"value":0},"dac14":{"value":0},"dac15":{"value":0},"dac16":{"value":0}}

KC868-AP 48V

Tue, 15 Apr 2025 16:21:50 +0800

Hi,
I need DC Dimmer for 48V LED
can I use KC868-AP for this? 20N06 works with 60V. look like it work's? I'am right?

AutoSteps staircase lighting controller

Mon, 09 Dec 2024 00:09:12 +0800

Hello
I would like to build an AutoSteps staircase lighting controller that allows automatic control of the staircase lighting
in the staircase. Which gives the possibility of obtaining a decorative visual effect consisting of smooth
brightening and extinguishing of the stair lighting.
I would like the device to be configured using four buttons on the front (left/right/confirm/cancel - long press to return to the main screen) of the device and an OLED display, thanks to which I could change the staircase controller settings. It would be nice if the device allowed independent control of LED light sources up to 24 V DC. Do I need anything else besides the KC868-AP ESP32 DC12/24V LED Dimmer to control the brightness of the lights?
Control with a PWM signal:
• LED bulb, LED strip, LED module, LED strips, LED eyes

To be able to connect a signal from motion sensors at the beginning and end of the stairs, which would activate animations controlling the brightness of the connected light sources.

Can I also add an RTC time module?

Is it possible to make such a controller?
Best regards

KC868-AP KCS 2 MQTT

Thu, 18 Apr 2024 03:27:06 +0800

Hello
I am new on this forum, i wish to ask if somebody tried to make an working MQTT configuration file for KC868-AP dimmer and for RGB or RGBW led strip ? I tried to rewrite the KC868-D16 mqtt config but whitout success. Thank You in advace for help
With esphome is working well but i wish to control it with MQTT in home assistant

ADR - ESP32 AC 220v dimmer arduino demo source code and library

Tue, 19 Mar 2024 09:55:13 +0800

Code:
#include     ////RBDdimmer.h /////RBDmcuESP32.h

//Parameters

 int zeroCrossPin  = 25;

 int acdPin  = 33;

int add_pin = 15;

int dec_pin = 4;

int MIN_POWER  = 0;

int MAX_POWER  = 80;

int POWER_STEP  = 2;

//Variables

int power  = 0;

//Objects

dimmerLamp acd(acdPin,zeroCrossPin);

void setup(){

  //Init Serial USB

  Serial.begin(115200);

  Serial.println(F("Initialize System"));

  acd.begin(NORMAL_MODE, ON);

  acd.setPower(10); // setPower(0-100%);

  Serial.print("lampValue -> ");

  Serial.print(acd.getPower());

  Serial.println("%");

  pinMode(add_pin,INPUT_PULLUP);

  pinMode(dec_pin,INPUT_PULLUP);

}

void loop(){

  testDimmer();

}

int value = 0;

void testDimmer(){/* function testDimmer */ 

  int add = digitalRead(add_pin);

  int dec = digitalRead(dec_pin);

  if(add == LOW) value += 1;

  if(dec == LOW) value -= 1;

  if(value <= MIN_POWER)  value = MIN_POWER;

  else if(value>MAX_POWER) value = MAX_POWER;

  acd.setPower(value);

  delay(100);

////Sweep light power to test dimmer

 /*  for(power=MIN_POWER;power<=MAX_POWER;power+=POWER_STEP){

    acd.setPower(power); // setPower(0-100%);

      Serial.print("lampValue -> ");

      Serial.print(acd.getPower());

      Serial.println("%");

    delay(100);

  }

 for(power=MAX_POWER;power>=MIN_POWER;power-=POWER_STEP){

    acd.setPower(power); // setPower(0-100%);

      Serial.print("lampValue -> ");

      Serial.print(acd.getPower());

      Serial.println("%");

    delay(100);

  }*/

}

source code download:
tst_dimmer.zip (Size: 744 bytes / Downloads: 711)

AC dimmer arduino library file download:
ac-dimmer.zip (Size: 5.68 KB / Downloads: 800)

ADR ESPHome demo config for home assistant

Tue, 19 Mar 2024 09:49:23 +0800

esphome:
name: adr
friendly_name: ADR

esp32:
board: esp32dev
framework:
type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
encryption:
key: "ZWeLIQ6pHBi8F7iz8oU50b5e4pOntKh7crgfrRpT0NQ="

ota:
password: "0d1fac93b813af333e08eee312020918"

wifi:
ssid: !secret wifi_ssid
password: !secret wifi_password

# Enable fallback hotspot (captive portal) in case wifi connection fails
ap:
ssid: "Adr Fallback Hotspot"
password: "GOSjJDSsz6Z5"

captive_portal:

output:
- platform: ac_dimmer
id: dimmer1
gate_pin: 33
zero_cross_pin:
number: 25
mode:
input: true
inverted: no
min_power: 35%

light:
- platform: monochromatic
output: dimmer1
name: adr_lamp
default_transition_length: 100ms

ADR_HA_ESP32.txt (Size: 840 bytes / Downloads: 531)

ADR ESP32 I/O pin define

Tue, 19 Mar 2024 09:46:59 +0800

DI1: GPIO15
DI2: GPIO4

RS485:
TXD: GPIO27
RXD: GPIO26

Tuya:
TXD: GPIO14
RXD: GPIO13

analog input: GPIO36

zero_cross_pin: GPIO25
gate_pin: GPIO33

P8 jumper:
R32 short with GND: analog input use for 4-20mA signal
R33 short with GND: analog input use for dc 0-10v signal

use of I2C connection

Wed, 06 Mar 2024 22:41:10 +0800

Is it possible to use the white I2C plug on the kc868-ap board. If yes to what gpio numbers are the pins connected?
I would like to use this to connect pushbuttons via a IC bus interface as remotely I do not have enough wires to connect all the wall pushbuttons directly to the inputs of thet board. I use esphome

KC868-AP circuit diagram

Mon, 29 Jan 2024 09:09:12 +0800

AP.jpg (Size: 820.01 KB / Downloads: 870)

KC868-ap

Mon, 13 Nov 2023 00:59:46 +0800

Hello,
I received the board recently and was able to get it working with esphome. I am using this board to connect ledstrips with a voltage of 24v.
Ik have also some downlights at 12v that I would like control with the board. I see that the powerrail is divided in 3 sections but connected to eachother. Would it be possible to separate one part and connect the 12v downlights with a 12v powersupply? If not what could be another solution.

KC868-D16 inputs

Sun, 20 Aug 2023 17:47:43 +0800

Good Morning,

Is it possible to have the inputs independent of the dimmers in MQTT ?

The ideia is to use these inputs in home assistant to actuate others elements in my house.

The ideia is to publish the state of these inputs.

Is this available in any firmware version for KC868-D16 ?

Thank you

Best regards

Does it work with 220v bulbs?

Fri, 11 Aug 2023 10:58:04 +0800

Hello,

I'm considering using this board in my new apartment setup, and I'd like to have dimmer-able lights.
The thing is: The market around here (Brazil) 99% of dimmer-able lights are 110/220v.

I've seen that this would require Solid State Regulators to actually regulate the high voltage, but I've also seen posts stating compatibility issues.

Is this board really recommended for this setup?
If so, is there an SSR bank (ie, a board with multiple channels)? Using individual SSR is expensive and will likely take a lot of physical room on the box

Examples:
https://pt.aliexpress.com/item/1005004999414308.html

Channels always have current

Tue, 08 Aug 2023 18:07:55 +0800

I have a problem with the board... Channels 0, 3, 7, and 13 are always powered.

I have disconnected everything from the board except the power and only in those 4 channels always have 24v at the output.

Is it a board or programming problem? I think it's the board because the other outputs work fine...

What can I do?

KC868-AP

Fri, 26 May 2023 13:13:05 +0800

Hello, why is the flashing light being dimmed

Maybe this board does not work with ssr

Screenshot_20230526-081158_Gallery.jpg (Size: 1.3 MB / Downloads: 1623)