DPS3005 no response

[CommanderRedYT]

I have connected a ESP32 (NodeMCU-32 V1.3) to a DPS3005. Mine came without a connector, but i just soldered some cables to it.

I double-checked all connections, tried to switch RX and TX, tried different Pins but still, it does not work...

[syssi]

Which GPIOs did you use as RX/TX pins? Could you provide a photo of your wiring and the configuration YAML?

[CommanderRedYT]

I used GPIO4 and GPIO5 in my first try, and then switched to the 2nd Hardware Serial Port (GPIO16 & GPIO17).

substitutions:
  name: dps

esphome:
  name: dps-3005
  friendly_name: DPS-3005
  comment: "Monitor and control a RDTech Digital Control Power Supply (DPS) via UART-TTL"
  project: 
    name: "syssi.esphome-dps"
    version: 1.1.0

esp32:
  board: esp32dev

external_components:
  - source: github://syssi/esphome-dps@main
    refresh: 0s

uart:
  id: uart_0
  baud_rate: 9600
  tx_pin: GPIO17
  rx_pin: GPIO16
  debug:
    direction: BOTH

modbus:
  id: modbus0
  uart_id: uart_0
  send_wait_time: 0ms

dps:
  id: dps0
  modbus_id: modbus0
  update_interval: 5s
  current_resolution: AUTO

sensor:
  - platform: dps
    output_voltage:
      name: "${name} output voltage"
    output_current:
      name: "${name} output current"
    output_power:
      name: "${name} output power"
    input_voltage:
      name: "${name} input voltage"
    voltage_setting:
      name: "${name} voltage setting"
    current_setting:
      name: "${name} current setting"
    backlight_brightness:
      name: "${name} backlight brightness"
    firmware_version:
      name: "${name} firmware version"

text_sensor:
  - platform: dps
    protection_status:
      name: "${name} protection status"
    device_model:
      name: "${name} device model"

switch:
  - platform: dps
    output:
      name: "${name} output"
    key_lock:
      name: "${name} key lock"

number:
  - platform: dps
    voltage_setting:
      name: "${name} voltage setting"
    current_setting:
      name: "${name} current setting"

# Enable logging
logger:
  level: DEBUG

# Enable Home Assistant API
api:
  encryption:
    key: "--NOT-TODAY--"

ota:
  password: "--NOT-TODAY--"

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

  # Enable fallback hotspot (captive portal) in case wifi connection fails
  ap:
    ssid: "Dps-3005 Fallback Hotspot"
    password: "--NOT-TODAY--"

captive_portal:

[CommanderRedYT]

I wired it like this: https://johan.kanflo.com/wp-content/uploads/2017/06/DPS5005-comms-UART.jpg (Not my picture, but is same as i have)

[CommanderRedYT]

Okay, somehow it is working now. Did not change anything tho.