KC868-A8v3 ESP32-S3 8 channel relay module

KinCony KC868-A8v3 ESP32-S3 smart controller based on ESP32-S3-WROOM-1U (N16R8) wifi chip. It have 8 channel digital input and 8 channel relay output, 4 channel 1-wire GPIOs. One SD card using SPI bus. KinCony KC868-A8v3 include DS3231 high precision RTC clock chip. LCD display will show wifi and ethernet IP address. A8v3 have RS485 port. You can write any code by Arduino IDE / MicroPython / ESP-IDF development tool to ESP32S3 module. We will supply Arduino / ESP-IDF demo code for different samples. Everyone can modify and change the code for your own smart home automation system project. it support use by ESPHome for home assistant or tasmota firmware for smart home automation DIY. A8v3 use KCS v3 firmware, it support home assistant auto discovery function by MQTT, so without write any config code (zero code) for home assistant. KCS v3 support Apple HomeKit.

Model No. KinCony KC868-A8v3
Description: KinCony 8 Channel ESP32-S3 Relay Controller – A8v3
Power supply: 12/24V DC
Processor: ESP32-S3-WROOM-1U (N16R8)
PCB Size: 105mm*148mm
interfaces: Ethernet(RJ45)-LAN 100Mbps IPv4/IPv6,WiFi,RS485,Bluetooth,USB-C,LCD, i2c extender
RTC: DS3231 high precision chip (battery socket on PCB)
SD Card: SPI bus
Installation method: DIN RAIL (with plastic shell)
LCD: SSD1306 I2C display

Outputs:
8CH Relay Outputs, every channel relay’s load MAX250V10A COM,NO,NC

Inputs:
8CH dry contact inputs (optocoupler isolation, long distance circuit for MAX 500 meters cable)
3 buttons: S1:Tuya S2:ESP32 Reset S3:ESP32 Download (GPIO0)
1-Wire GPIO: 4CH (with pull-up resistance on PCB)

improvements based on old KC868-A8:

1. use by ESP32-S3-WROOM-1U (N16R8) big memory size chip and Tuya module.
2. support use tuya app without tuya license.
3. support voice control by Alexa and Google home speaker directly.
4. add NTC power protect circuit, if polar exchange will not burn board.
5. replace LAN8720A with W5500 ethernet chip, more stable.
6. add DS3231 high-precision RTC clock.
7. support KinCony new cloud service.
8. support KCS v3 support Apple HomeKit and Loxone Miniserver system.
9. add SSD1306 LCD display
10. add SD card to save LOG
11. support KCS v3 newest firmware more powerful functions.

software solution:

1. download KinCony KCS v3 firmware, so that work with multi protocol: HTTP, MQTT, TCP, RS485 modbus, Tuya app (need to buy tuya license), config OUTPUT for “momentary” and “interlock” group functions. “KCS” v3 support IFTTT function work locally without internet. It also support use by KinCony cloud server. KCS v3 support home assistant auto discovery function by MQTT, so without any config file for home assistant.

2. download firmware by ESPHome, integrate to home assistant or use by web service.

3. download tasmota firmware.

4. write your own Arduino code for your own requirements.

5. It is recommended to use home assistant and Tuya mobile phone app at the same time. So that remote control by internet using Tuya app, local control by LAN using home assistant app.

Related technical information
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ESP32 I/O pin define: https://www.kincony.com/forum/showthread.php?tid=7970
KCS v3 firmware download: https://www.kincony.com/forum/forumdisplay.php?fid=75
config yaml file for ESPHome: https://www.kincony.com/forum/showthread.php?tid=7971
ESPHome official supportted list:
arduino demo source code: https://www.kincony.com/forum/forumdisplay.php?fid=78
KCS v3 firmware online guide: https://www.kincony.com/how-to-use-kcsv3-firmware-esp32-board.html

Design detail photos:

use by ESP32-S3-WROOM-1U (N16R8) big memory size chip.

OptoCoupler circuit with digital input ports

high-precision DS3231 RTC clock with battery socket

i2c extender

NTC surge protection circuit

relay support MAX10A

RF433M sender and receiver module.

SD Card to save relay LOG as TXT file.

SSD1306 i2c LCD

use by removable terminal