<![CDATA[Smart Home Automation Forum - KC868-A6]]> https://www.kincony.com/forum/ Sun, 17 May 2026 18:56:05 +0000 MyBB <![CDATA[KC868-A6v3 ESP32-S3 6 channel LoRa relay module]]> https://www.kincony.com/forum/showthread.php?tid=9106 Fri, 06 Mar 2026 06:36:10 +0800 mcdave]]> https://www.kincony.com/forum/showthread.php?tid=9106 I am using the KinCony KC868-A6v3 and  kincony ALR lora board and developing custom firmware with Arduino / PlatformIO.
The SSD1306 OLED works with the factory firmware, but when I upload my own firmware the LCD stays blank.
Could you please tell me:
  1. What GPIO pins are used for the OLED I2C (SDA / SCL)?
  2. What is the I2C address (0x3C or 0x3D)?
  3. Do we need to initialize any IO expander or controller before using the OLED?
  4. Do you have a simple Arduino example to initialize the onboard OLED?
Thank you.]]> I am using the KinCony KC868-A6v3 and  kincony ALR lora board and developing custom firmware with Arduino / PlatformIO.
The SSD1306 OLED works with the factory firmware, but when I upload my own firmware the LCD stays blank.
Could you please tell me:
  1. What GPIO pins are used for the OLED I2C (SDA / SCL)?
  2. What is the I2C address (0x3C or 0x3D)?
  3. Do we need to initialize any IO expander or controller before using the OLED?
  4. Do you have a simple Arduino example to initialize the onboard OLED?
Thank you.]]> <![CDATA[Rs485 addresses for KC868-A6 relays]]> https://www.kincony.com/forum/showthread.php?tid=9066 Sun, 22 Feb 2026 00:01:52 +0800 Yuriy]]> https://www.kincony.com/forum/showthread.php?tid=9066 Please, help me, what are the Rs485 addresses (for ESPhome firmware) of the KC868-A6 relays?

Code:
switch:
- platform: modbus_controller
  modbus_controller_id: modbus_device
  name: "Relay rs485"
  register_type: coil
  address: ???????????????
  bitmask: 1

Thank you in advance.]]> Please, help me, what are the Rs485 addresses (for ESPhome firmware) of the KC868-A6 relays?

Code:
switch:
- platform: modbus_controller
  modbus_controller_id: modbus_device
  name: "Relay rs485"
  register_type: coil
  address: ???????????????
  bitmask: 1

Thank you in advance.]]> <![CDATA[KC868-A6 with KC868-HAv2]]> https://www.kincony.com/forum/showthread.php?tid=9046 Thu, 12 Feb 2026 00:08:51 +0800 TMM]]> https://www.kincony.com/forum/showthread.php?tid=9046
I have C868-A6 and KC868-HAv2 module,
with the latest Kincony firmware, but I can't find on IFTTT tab how to set action with MODBUS-HA protocol.
It possible to setup with this configuration?

Digital inputs works well.]]>
I have C868-A6 and KC868-HAv2 module,
with the latest Kincony firmware, but I can't find on IFTTT tab how to set action with MODBUS-HA protocol.
It possible to setup with this configuration?

Digital inputs works well.]]> <![CDATA[KC868-A6: Any accessible GPIO without hardware modification?]]> https://www.kincony.com/forum/showthread.php?tid=9044 Wed, 11 Feb 2026 22:26:54 +0800 syme]]> https://www.kincony.com/forum/showthread.php?tid=9044
On the KC868-A6 board, there are no directly accessible GPIOs like on the KC868-A6 v3.
Is it possible to reuse or repurpose some GPIOs without soldering or desoldering components?
I was considering IO13 from the internal serial port (P17 interface), but I’m unsure because the CPU schematic shows IO13 as not connected (marked with a red cross).
Are there any other GPIOs that might be available?

Thanks in advance for your help.

.pdf   KC868-A6-schematic.pdf (Size: 576.02 KB / Downloads: 146) ]]>
On the KC868-A6 board, there are no directly accessible GPIOs like on the KC868-A6 v3.
Is it possible to reuse or repurpose some GPIOs without soldering or desoldering components?
I was considering IO13 from the internal serial port (P17 interface), but I’m unsure because the CPU schematic shows IO13 as not connected (marked with a red cross).
Are there any other GPIOs that might be available?

Thanks in advance for your help.

.pdf   KC868-A6-schematic.pdf (Size: 576.02 KB / Downloads: 146) ]]> <![CDATA[цифровые входы DI-1-6 на KinCony KC868-A6]]> https://www.kincony.com/forum/showthread.php?tid=8976 Sun, 01 Feb 2026 11:30:17 +0800 AlexeyAris]]> https://www.kincony.com/forum/showthread.php?tid=8976 Датчик сухого контакта подключен к цифровому входу DI-1 и GND в контроллере KinCony KC868-A6.
При замыкании сухого контакта Реле 1 включается
При размыкании сухого контакта Реле 1 выключается
Напряжение на контакте DI-1 составляет 11 В. Это нормальное напряжение?]]> Датчик сухого контакта подключен к цифровому входу DI-1 и GND в контроллере KinCony KC868-A6.
При замыкании сухого контакта Реле 1 включается
При размыкании сухого контакта Реле 1 выключается
Напряжение на контакте DI-1 составляет 11 В. Это нормальное напряжение?]]> <![CDATA[ompatibility of ACS712 with KC868‑A6 ADC Inputs (Arduino)]]> https://www.kincony.com/forum/showthread.php?tid=8975 Sat, 31 Jan 2026 01:13:55 +0800 syme]]> https://www.kincony.com/forum/showthread.php?tid=8975
I want to measure the presence of current on a 220 V device (≤16 A) using my KC868‑A6.

I have a 20 A ACS712 current sensor (analog output 0–5 V). I plan to use Arduino code directly. Before connecting it, I would like to know:
  1. Are the analog inputs (ADC) of the KC868‑A6 (GPIO 36/39/34/35) compatible with a signal from a 20 A ACS712 when using Arduino code?
  2. Is any filtering or signal conditioning required to ensure the ADC reads it correctly?
  3. Are there any special precautions regarding ground or reference to get a reliable reading?
     4. Are there other current sensors that would be more suitable for detecting the presence of current on a 220 V device with the KC868‑A6?

Thank you in advance for your help.

Best regards]]>
I want to measure the presence of current on a 220 V device (≤16 A) using my KC868‑A6.

I have a 20 A ACS712 current sensor (analog output 0–5 V). I plan to use Arduino code directly. Before connecting it, I would like to know:
  1. Are the analog inputs (ADC) of the KC868‑A6 (GPIO 36/39/34/35) compatible with a signal from a 20 A ACS712 when using Arduino code?
  2. Is any filtering or signal conditioning required to ensure the ADC reads it correctly?
  3. Are there any special precautions regarding ground or reference to get a reliable reading?
     4. Are there other current sensors that would be more suitable for detecting the presence of current on a 220 V device with the KC868‑A6?

Thank you in advance for your help.

Best regards]]> <![CDATA[Help needed: Bricked A6 v1.3 board]]> https://www.kincony.com/forum/showthread.php?tid=8974 Sat, 31 Jan 2026 00:00:45 +0800 schma]]> https://www.kincony.com/forum/showthread.php?tid=8974 Hi everyone,
I'm seeking some technical advice on reviving an A6 v1.3 board (ESP32-based).
The situation: The board was running ESPHome perfectly. However, following a Wi-Fi AP migration and some "beginner mistakes" within Home Assistant, I’ve lost all connectivity to the device.
The problem:
  • No OTA: Since the Wi-Fi credentials are now incorrect, I cannot access it over the air.
  • Serial flashing fails: I am unable to upload new firmware via the onboard USB port.
  • Hardware status: The onboard USB-to-Serial chip seems functional (it's recognized by the OS), but there is zero communication with the ESP32 SoC itself. It won't enter bootloader mode or accept any flash commands.
My questions:
  1. Is there a way to "force" this specific board into flash mode if the auto-reset circuit is failing?
  2. Can I bypass the onboard serial chip and flash the SoC directly using an external FTDI programmer? If so, does anyone have the pinout for the RX/TX/IO0/EN pads on this v1.3 board?
  3. Are there any specific recovery tools or "low-level" utilities (besides esptool.py) that you would recommend to "wake up" a non-responsive ESP32?
I would appreciate any tips or schematics to help me save this board!
Thanks in advance!]]> Hi everyone,
I'm seeking some technical advice on reviving an A6 v1.3 board (ESP32-based).
The situation: The board was running ESPHome perfectly. However, following a Wi-Fi AP migration and some "beginner mistakes" within Home Assistant, I’ve lost all connectivity to the device.
The problem:
  • No OTA: Since the Wi-Fi credentials are now incorrect, I cannot access it over the air.
  • Serial flashing fails: I am unable to upload new firmware via the onboard USB port.
  • Hardware status: The onboard USB-to-Serial chip seems functional (it's recognized by the OS), but there is zero communication with the ESP32 SoC itself. It won't enter bootloader mode or accept any flash commands.
My questions:
  1. Is there a way to "force" this specific board into flash mode if the auto-reset circuit is failing?
  2. Can I bypass the onboard serial chip and flash the SoC directly using an external FTDI programmer? If so, does anyone have the pinout for the RX/TX/IO0/EN pads on this v1.3 board?
  3. Are there any specific recovery tools or "low-level" utilities (besides esptool.py) that you would recommend to "wake up" a non-responsive ESP32?
I would appreciate any tips or schematics to help me save this board!
Thanks in advance!]]> <![CDATA[KC868-A6 - how to connect an optocoupler]]> https://www.kincony.com/forum/showthread.php?tid=8839 Tue, 23 Dec 2025 05:44:01 +0800 itpraktyk]]> https://www.kincony.com/forum/showthread.php?tid=8839
I would like connect to the KC868-A6-V1.4SP an optocoupler - similar to https://pl.aliexpress.com/item/1005008446930626.html . My goal is to detect and react for switching 230V power in monitored circuit.

I flashed the KC868-A6 board with ESPHome - for now with default configuration.

Can someone help me understand
- from which pin should I take a power source for low voltage optocoupler side 
- where to connect its output to the KC868-A6 board
- what I have to add to the ESPHome configuraiton?

Thank you in advance.]]>
I would like connect to the KC868-A6-V1.4SP an optocoupler - similar to https://pl.aliexpress.com/item/1005008446930626.html . My goal is to detect and react for switching 230V power in monitored circuit.

I flashed the KC868-A6 board with ESPHome - for now with default configuration.

Can someone help me understand
- from which pin should I take a power source for low voltage optocoupler side 
- where to connect its output to the KC868-A6 board
- what I have to add to the ESPHome configuraiton?

Thank you in advance.]]> <![CDATA[PCF8574 INT pin on KC868-A6 — Is it connected to ESP32? Schematic request.]]> https://www.kincony.com/forum/showthread.php?tid=8790 Sat, 06 Dec 2025 02:31:59 +0800 Asil]]> https://www.kincony.com/forum/showthread.php?tid=8790 I am using the KC868-A6 board and reading digital inputs through the PCF8574.
I need to know whether the INT (nINT) pin of the PCF8574 is connected to any GPIO pin of the onboard ESP32.
I have checked the hardware documentation, but I could not find a clear answer.
Some older forum posts suggest that the INT pin might not be connected at all, but I want to confirm this specifically for the KC868-A6.
Could you please clarify:
  1. Is the PCF8574 INT pin connected to the ESP32 on the KC868-A6 board?
  2. If yes, which ESP32 GPIO pin is it wired to?
  3. If not, is there a pad or test point where the INT pin can be accessed so we can wire it manually?
  4. If possible, could you share the related portion of the schematic or PCB layout showing the PCF8574 connections?
I want to use hardware interrupts instead of polling the inputs constantly, so knowing the actual connection would help a lot.
Thank you very much!]]> I am using the KC868-A6 board and reading digital inputs through the PCF8574.
I need to know whether the INT (nINT) pin of the PCF8574 is connected to any GPIO pin of the onboard ESP32.
I have checked the hardware documentation, but I could not find a clear answer.
Some older forum posts suggest that the INT pin might not be connected at all, but I want to confirm this specifically for the KC868-A6.
Could you please clarify:
  1. Is the PCF8574 INT pin connected to the ESP32 on the KC868-A6 board?
  2. If yes, which ESP32 GPIO pin is it wired to?
  3. If not, is there a pad or test point where the INT pin can be accessed so we can wire it manually?
  4. If possible, could you share the related portion of the schematic or PCB layout showing the PCF8574 connections?
I want to use hardware interrupts instead of polling the inputs constantly, so knowing the actual connection would help a lot.
Thank you very much!]]> <![CDATA[KC868-A6 Flow Control]]> https://www.kincony.com/forum/showthread.php?tid=8725 Wed, 05 Nov 2025 00:47:33 +0800 Edomicianoa]]> https://www.kincony.com/forum/showthread.php?tid=8725 Prezada Equipe de Suporte Técnico da KinCony,
Estou usando a placa de automação residencial inteligente KC868-A6 V1 4SP .
Preciso saber se é possível usar o controle de fluxo de hardware RTS/CTS (Request To Send / Clear To Send) nas portas seriais RS232 e/ou RS485 integradas .
  • Em caso afirmativo: Poderia especificar quais pinos da placa estão atribuídos aos sinais RTS e CTS para as interfaces RS232 e/ou RS485?
  • Caso a resposta seja NÃO: Você poderia recomendar um modelo alternativo de placa KinCony que suporte o controle de fluxo de hardware RTS/CTS por meio de sua interface RS232?
Agradecemos imensamente sua ajuda para esclarecer as capacidades de hardware da placa KC868-A6.
Muito obrigado, Smile]]> Prezada Equipe de Suporte Técnico da KinCony,
Estou usando a placa de automação residencial inteligente KC868-A6 V1 4SP .
Preciso saber se é possível usar o controle de fluxo de hardware RTS/CTS (Request To Send / Clear To Send) nas portas seriais RS232 e/ou RS485 integradas .
  • Em caso afirmativo: Poderia especificar quais pinos da placa estão atribuídos aos sinais RTS e CTS para as interfaces RS232 e/ou RS485?
  • Caso a resposta seja NÃO: Você poderia recomendar um modelo alternativo de placa KinCony que suporte o controle de fluxo de hardware RTS/CTS por meio de sua interface RS232?
Agradecemos imensamente sua ajuda para esclarecer as capacidades de hardware da placa KC868-A6.
Muito obrigado, Smile]]> <![CDATA[MODBUS RTU comunication KC868 wich Siemens S1200 RS485]]> https://www.kincony.com/forum/showthread.php?tid=8660 Tue, 21 Oct 2025 04:06:20 +0800 naurismaculskis]]> https://www.kincony.com/forum/showthread.php?tid=8660
I was trying to find register addres in  "KC868-A series board protocol – Modbus"  file but there it says that register is 0000 which does not work. 

I added MODBUS file in attacment for  KC868 series.

.pdf   KC868-A-series-protocol-ModBus.pdf (Size: 139.11 KB / Downloads: 322) ]]>
I was trying to find register addres in  "KC868-A series board protocol – Modbus"  file but there it says that register is 0000 which does not work. 

I added MODBUS file in attacment for  KC868 series.

.pdf   KC868-A-series-protocol-ModBus.pdf (Size: 139.11 KB / Downloads: 322) ]]> <![CDATA[RF fo KC868-A6]]> https://www.kincony.com/forum/showthread.php?tid=8655 Thu, 16 Oct 2025 16:00:57 +0800 D2K]]> https://www.kincony.com/forum/showthread.php?tid=8655 I need to connect an RF button fo KC868-A6 KCS v2.2.14 
the firmware "KCS" description lists "support for EV1527 or PT2262, PT2264 wireless remote code"
there is no connection description.]]> I need to connect an RF button fo KC868-A6 KCS v2.2.14 
the firmware "KCS" description lists "support for EV1527 or PT2262, PT2264 wireless remote code"
there is no connection description.]]> <![CDATA[DEBUG by JTAG]]> https://www.kincony.com/forum/showthread.php?tid=8493 Fri, 05 Sep 2025 06:30:25 +0800 maddoc]]> https://www.kincony.com/forum/showthread.php?tid=8493
If this information is not for general use, then please reply by email or in private messages.
[Image: image.png]

.jpg   pins.jpg (Size: 75.34 KB / Downloads: 176) ]]>
If this information is not for general use, then please reply by email or in private messages.
[Image: image.png]

.jpg   pins.jpg (Size: 75.34 KB / Downloads: 176) ]]> <![CDATA[No AP appears]]> https://www.kincony.com/forum/showthread.php?tid=8446 Wed, 13 Aug 2025 20:12:03 +0800 sergey1945]]> https://www.kincony.com/forum/showthread.php?tid=8446 <![CDATA[Power supply]]> https://www.kincony.com/forum/showthread.php?tid=8344 Sun, 27 Jul 2025 13:45:37 +0800 Smirnof]]> https://www.kincony.com/forum/showthread.php?tid=8344 Please tell me the range of power supply voltage (9-15v ?) and current (min .5A)?
Thanks]]> Please tell me the range of power supply voltage (9-15v ?) and current (min .5A)?
Thanks]]>