SHT30/DS18B20 errors and warnings in the logs

[admin]

yes, use a new 1 meter DS18B20 to test whether work well.

[TaurosRMK]

yes, use a new 1 meter DS18B20 to test whether work well.

I connected a new sensor with a 1-meter wire. I tested the sensor for over 1 hour and still see the warning in the logs...

   
   

[admin]

can you change to use another GPIO port for testing?

[TaurosRMK]

can you change to use another GPIO port for testing?

Everything is the same, only there are more warnings in a shorter time.
Any guesses as to why this is happening? I bought the A2 board expecting it would fit my needs, including using only one DS18B20 sensor (because there is everything needed for this), but I get warnings in the sensor operation, so I can't be sure it is working properly.

   

[admin]

ok, tomorrow i will test DS18B20 with KC868-A2.

[TaurosRMK]

I tested this sensor with the D1 mini board using a 4K7 pull-up resistor. More than 1 hour passed and I did not receive any warning in the logs.

   
   

[admin]

I have tested KC868-A2 board with GPIO33 for DS18B20
   
   
here is webpage:
   
here is my ESPHome config file:
   
you can test with my yaml file (just replace DS18B20 sensor ID by yourself):

Code:

esphome:
  name: a2

esp32:
  board: esp32dev
  framework:
    type: arduino

# Enable logging
logger:

# Enable Home Assistant API
api:
  encryption:
    key: "YnmQggQsfd7jvFefoMqNCpBtb63RXtotS+mSBQVIhY8="

# Example configuration entry
ethernet:
  type: LAN8720
  mdc_pin: GPIO23
  mdio_pin: GPIO18
  clk_mode: GPIO17_OUT
  phy_addr: 0

switch:
  - platform: gpio
    name: "a2-light1"
    pin: 15
    inverted: False
    id: relay_1  # Assign ID to relay 1

  - platform: gpio
    name: "a2-light2"
    pin: 2
    inverted: False

binary_sensor:
  - platform: gpio
    name: "a2-input1"
    pin:
      number: 36
      inverted: true

  - platform: gpio
    name: "a2-input2"
    pin:
      number: 39
      inverted: true

external_components:
  - source:
      type: git
      url: https://github.com/ssieb/esphome
      ref: onewire
    components: [ gpio ]
    refresh: 1min

#dallas:
one_wire:
- platform: gpio
   pin: GPIO33
   id: sensor_1

sensor:
  - platform: dallas_temp
    one_wire_id: sensor_1
    address: 0xc1012263977a9928
    filters:
    - lambda: return x * (9.00/5.00) + 32.00;
    name: "Temperature #1"
    unit_of_measurement: "°F"
    icon: "mdi:temperature-fahrenheit"
    device_class: "temperature"
    accuracy_decimals: 2

web_server:
  port: 80

# UART configuration for SIM7600E
uart:
  id: uart_2
  tx_pin: GPIO5
  rx_pin: GPIO13
  baud_rate: 115200

interval:
  - interval: 200ms  # Shorten the interval to reduce blocking time
    then:
      - lambda: |-
          static std::string uart_buffer;
          uint8_t c;
          int count = 0;
          const int max_reads = 10;  // Limit the number of bytes read per interval

          while (id(uart_2).available() && count < max_reads) {
            if (id(uart_2).read_byte(&c)) {
              uart_buffer += (char)c;
              count++;

              // Log each received character (optional for debugging)
              ESP_LOGD("UART", "Received: %c", (char)c);

              // Check if we have received the "RING" signal
              if (uart_buffer.find("RING") != std::string::npos) {
                ESP_LOGI("SIM7600", "Incoming call detected, turning on relay 1.");
                id(relay_1).turn_on();  // Turn on relay 1
                uart_buffer.clear();  // Clear the buffer after processing
              }

              // Clear the buffer if it gets too large
              if (uart_buffer.length() > 100) {
                uart_buffer.clear();
              }
            }
          }

yaml file download: 
  A2-DS18B20-HA.txt (Size: 2.57 KB / Downloads: 32)

[TaurosRMK]

Perhaps you misunderstood me. I receive data from the sensor, but from time to time the sensor sends a warning in the logs “Scratch pad checksum invalid!” and the connection with it is lost for one sensor update interval (in my case, 5 seconds). This can happen either 3-5 minutes after launching or 15-20 minutes later, there is no regularity. To make sure that everything is fine, you need to connect the detector and leave the log for 1 hour, and then check if everything is fine. But the fact that these warnings appear in the logs must mean something. As I mentioned above, I don't get these warnings on my other D1 Mini board.

Your example didn't work either. Could something on the A2 board be damaged and affect the warnings from the DS18B20 sensor?

[admin]

my code is update every 1 minute, you can change to smaller.
KC868-A2 1-wire circuit, only use by 4 resistance for two GPIO ports.
R11,R12: 4.7K
R13,R14: 100ohm
   
Maybe you can use electric ferrochrome to repair the resistor pad and the gpio pad related to the esp32 module.

[TaurosRMK]

Hmm... can you tell me in more detail what exactly I have to do? I don't know what ferrochrome is or what to do with it.

Are you suggesting that there might be a problem with the resistors? I can solder other 4.7K and 100Ω resistors in their place, but I have standard resistors with legs, not SMD. But before that, can I somehow make sure that the resistors on the board are not working properly?