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.
  

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?
   

Hi Gerarding model F8 N16R8 . There are have UART pin ?

Hi everyone,
I am building a lighting control system for about 170 mini incandescent bulbs.
Load

• Bulbs: 6V, 0.2A each
  
• Total: ~170 bulbs
  

1. Is this the correct wiring method for KC868-A32M outputs?
   
2. Can these MOSFET channels support PWM dimming for incandescent bulbs, or only ON/OFF?
   
3. What is the best way to control multiple KC868-A32M boards from a PC (LAN/MQTT/Modbus)?
   
4. Any important power or wiring concerns for a 170-bulb system?
   
   

I need ~50 CT inputs, can I chain multiple M30 boards via the bus header on the board?

Hi im new user
I knew that  "KCS" firmware is not an open source .
so its up on your developers to consider adding a way to implement selfe edited dash board on the   KC868 itself
im sure it will be A large jump on your firmware 

sourcecode   https://github.com/ayushsharma82/ESP-DASH



withe love

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Problem Summary
I cannot get network registration on my KC868-A16S board. The modem consistently returns CSQ=99 (No Signal) and fails to attach to GPRS.
________________________________________
Hardware Setup
• Board: KC868-A16S (ESP32 with integrated GSM module)
• SIM Card: Active SIM with data plan (tested working in phone)
• Antenna: LTE antenna connected to the antenna port
• Power: 12V DC power supply

Software Configuration
Platform
• PlatformIO with Arduino framework
• ESP32 Dev Module target
• TinyGSM library v0.11.7
Pin Configuration (from our code)
// GSM Module Pins
#define PIN_GSM_RX 32  // ESP32 receives from modem
#define PIN_GSM_TX 33  // ESP32 sends to modem
#define PIN_GSM_PWR 23 // Power pin (unused currently)
APN Settings
#define APN_NAME "internet"
#define APN_USER ""
#define APN_PASS ""
________________________________________
Initialization Code
// GSM Modem Init
SerialAT.begin(115200, SERIAL_8N1, PIN_GSM_RX, PIN_GSM_TX);
delay(3000);
Serial.println("Initializing GSM modem...");
modem.restart();
// Check Signal Quality
int csq = modem.getSignalQuality();
Serial.print("Signal Quality (CSQ): ");
Serial.println(csq);
// Wait for Network
if (!modem.waitForNetwork(15000)) {
    Serial.println("Network registration FAILED");
} else {
    Serial.println("Network OK");
    // Connect to GPRS
    if (!modem.gprsConnect(APN_NAME, APN_USER, APN_PASS)) {
        Serial.println("GPRS Connect failed");
    }
}
________________________________________
Serial Monitor Output
Initializing GSM modem...
Signal Quality (CSQ): 99
Waiting for network... FAILED (will retry in loop)
Network lost. Reconnecting...
Network unreachable
CSQ=99 means "Not Detectable" according to AT command specifications.
________________________________________
What I Have Tried
1. ✅ Verified SIM card works in mobile phone
2. ✅ Tried different APN names ("internet", "")
3. ✅ Checked antenna connection
4. ✅ Tried baud rates: 9600, 57600, 115200
5. ✅ Power cycled the board multiple times
6. ❓ Not sure if there is a PWR_KEY or RESET pin that needs toggling
________________________________________
Questions for KinCony Team
1. What is the GSM module model on the A16S? (SIM7600, SIM800L, A7670C, or other?)
2. Are the TX/RX pins correct? (We use GPIO 32 for RX, GPIO 33 for TX)
3. Is there a power-on sequence required? Does the GSM module have a PWR_KEY or RESET pin that must be toggled before use?
4. What baud rate should we use? (Currently 115200)
5. Do you have a working demo code or .bin file that we can flash to verify the hardware works?
________________________________________
Additional Information
• Wi-Fi connection works perfectly on the same board
• All other I2C devices (PCF8574, RTC, sensors) work correctly
• The board was purchased recently and appears undamaged
Thank you for your help!

KinCony E8v3 RS485 Modbus Din Rail Relay Module based on ARM CPU. It have 8 manual control switch buttons can turn ON/OFF relay even if system is broken. The manual control buttons can be extend by user. The extend cable MAX support 500 meters. 8 channel removable OMRON high-quality relay. It can integrate to home assistant by ESPHome using RS485 modbus controller.

Inside relay model : OMRON G2R-1-E SPDT
Size: 170mm*105mm*73mm
every channel output : COM,NO,NC
Coil voltage: 12V or 24V
MAX current: 16A at 250VAC
Operation Temperature: -40~55℃
Relay consumption: 0.53W/each
Mechanical life: more than 5 million times
Electrical life: (under rated control capacity) more than 100,000 times (ON-OFF frequency 20 times/minute)
Maximum operating frequency: 20 times/minute (under rated control capacity)
8 channel manual control buttons

There are 3 control mode:
a. relay control by HIGH level (12V or 24V) or LOW level (0v). (It have two different work voltage version)
b. relay control by manual control buttons on board or by extend manual control buttons.
c. relay control by RS485 modbus command.
4 bit DIP switch:
bit 1-2-3: set RS485 address
bit 4: ON: disable RS485 communication OFF: enable RS485 communication
RS485 protocol: standard MODBUS protocol. default baud rate: 38400bps

KinCony E24v3 RS485 Modbus Din Rail Relay Module based on ARM CPU. It have 24 manual control switch buttons can turn ON/OFF relay even if system is broken. The manual control buttons can be extend by user. The extend cable MAX support 500 meters. 24 channel removable OMRON high-quality relay. It can integrate to home assistant by ESPHome using RS485 modbus controller.

Inside relay model : OMRON G2R-1-E SPDT
Size: 412mm*105mm*73mm
every channel output : COM,NO,NC
Coil voltage: 12V or 24V
MAX current: 16A at 250VAC
Operation Temperature: -40~55℃
Relay consumption: 0.53W/each
Mechanical life: more than 5 million times
Electrical life: (under rated control capacity) more than 100,000 times (ON-OFF frequency 20 times/minute)
Maximum operating frequency: 20 times/minute (under rated control capacity)
24 channel manual control buttons

There are 3 control mode:
a. relay control by HIGH level (12V or 24V) or LOW level (0v). (It have two different work voltage version)
b. relay control by manual control buttons on board or by extend manual control buttons.
c. relay control by RS485 modbus command.
4 bit DIP switch:
bit 1-2-3: set RS485 address
bit 4: ON: disable RS485 communication OFF: enable RS485 communication
RS485 protocol: standard MODBUS protocol. default baud rate: 38400bps

Hello,
Please help me with some information. I have two questions about the KinCony F16 module (software nr. V3.18.0)  and Tuya.
I have connected simple momentary (non-latching) switches to the input channels to control lights. The switch has no fixation: one press turns the light ON, the next press turns it OFF.
Question:
Why, in the Tuya app (Simple Device Scenario),  I can configure the “Reverse Switch” function only for channels 1–6, while the other channels only have ON / OFF options.WHY?







Question 2:
Why is there such a noticeable delay / latency between pressing the button and the relay switching ON? It is very uncomfortable to use.
Is this a Tuya cloud-related issue, and if I use a local server (local control), will this delay be resolved?

Hi,
I've wired the controller up with a relay board but it acts a bit strange.
All the MOSFET LEDs are on at all the time.

The relay board uses 3 pins for power options. It is set to VCC JD-VCC. 

The relays work when controlled from homeassistant through esphome with a little quirk. When homeassistant switches are off the relays turn on. So it works the opposite way.

The relay board gets its own power and ground.

Are the LEDs supposed to be on at all the time when a relay board is used ?

Is the opposite switching direction a configuration error or I wired something up incorrectly?

This is my esphome config for the board:

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