PZEM-017 goes smart :)

[TomHC]

Ahojte, MUST PV1800 neposkytuje údaje o výkone z panelov, iba výkon MPPT nabíjačky, tak som kúpil merač PZEM-017 so 100A shuntom. Najskôr som ho skúšobne zaintegroval do Home assistanta cez RS-485 TCP MODBUS adaptér ET69C02, ale to bolo veľa káblov. Potom som tam pripojil ESP32-C3 SuperMini a RS-485 - UART modul. Ani to sa mi nepáčilo, tak som urobil trochu reverzné inžinierstvo a ESP32-C3 som zabudoval priamo do krabičky merača. Prikladám foto vnútorností, cez týždeň to pridám aj na Github

Napájanie je výhradne cez Micro USB port, odstránil som dvojitú diódu BAT54C ktorá slúžila na zlúčenie napájania z USB portu a napätia z meracieho obvodu. UART dáta sa berú od rezistorov R14 a R8, hlavný čip pracuje na 3.3V, takže netreba ani prispôsobovať napäťové úrovne pre ESP. Prevedenie "na pavúka", ideálne je to poistiť kvapkou z tavnej tyčinky.

A tu je v podstate aj celý YAML:

Kód: Vybrat vše

esphome:
  name: pzem-017

esp32:
  variant: ESP32C3
  board: esp32-c3-devkitm-1

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

api:
ota:
logger:

uart:
  baud_rate: 9600
  data_bits: 8
  stop_bits: 2
  parity: NONE
  tx_pin: GPIO10
  rx_pin: GPIO20

sensor:
  - platform: uptime
    name: "PZEM-017 uptime"
    update_interval: 30s
  - platform: wifi_signal
    name: "PZEM-017 WiFi Signal Sensor"
    update_interval: 30s

  - platform: pzemdc
    address: 30
    current:
      name: "PZEM-017 Current"
    voltage:
      name: "PZEM-017 Voltage"
    power:
      name: "PZEM-017 Power"
    energy:
      name: "PZEM-017 Energy"
    update_interval: 2s

switch:
  - platform: restart
    name: "PZEM-017 restart"

text_sensor:
  - platform: wifi_info
    ip_address:
      id: ip_address
      name: PZEM-017 IP Address
    ssid:
      name: PZEM-017 Connected SSID

[rva]

Pro mě to je inspirace. Zatím se mi schází komponenty. Koukám, že oproti originálu nemáš smd odpory R3 a R5. Hřály se?:

PZEM-017(V02)

[TomHC]

Koukám, že oproti originálu nemáš smd odpory R3 a R5. Hřály se?

Z nejakého dôvodu z nich uletel magic smoke. ale naozaj, ráno to bolo mŕtve, ešte v pôvodnom zapojení, bez mojich úprav.

[rva]

Zkusil jsem to zopakovat. Jen to napájecí napětí jsem si vzal kousek vedle. Odpory R14 a R8 mají takové rozestupy, že se na ně daly napájet rovnou piny z ESP32:

PZEM-017 úprava

A funguje jen komunikace s ESP32 a asi nekomunikuje ESP32 s PZEM-017:

PZEM-017 nedává senzory

log vypadá takto:

Kód: Vybrat vše

INFO ESPHome 2024.2.1
INFO Reading configuration /config/esphome/esphome-web-c03388.yaml...
INFO Starting log output from 192.168.0.152 using esphome API
INFO Successfully connected to pzem-017-esphome-web-c03388 @ 192.168.0.152 in 0.108s
INFO Successful handshake with pzem-017-esphome-web-c03388 @ 192.168.0.152 in 0.080s
[19:30:48][I][app:102]: ESPHome version 2024.2.1 compiled on Feb 28 2024, 16:58:55
[19:30:48][C][wifi:577]: WiFi:
[19:30:48][C][wifi:409]:   Local MAC: EC:DA:3B:C0:33:88
[19:30:48][C][wifi:414]:   SSID: [redacted]
[19:30:48][C][wifi:415]:   IP Address: 192.168.0.152
[19:30:48][C][wifi:417]:   BSSID: [redacted]
[19:30:48][C][wifi:418]:   Hostname: 'pzem-017-esphome-web-c03388'
[19:30:48][C][wifi:420]:   Signal strength: -74 dB ▂▄▆█
[19:30:48][C][wifi:424]:   Channel: 5
[19:30:48][C][wifi:425]:   Subnet: 255.255.255.0
[19:30:48][C][wifi:426]:   Gateway: 192.168.0.1
[19:30:48][C][wifi:427]:   DNS1: 192.168.0.1
[19:30:48][C][wifi:428]:   DNS2: 192.168.0.1
[19:30:48][C][logger:447]: Logger:
[19:30:48][C][logger:448]:   Level: DEBUG
[19:30:48][C][logger:449]:   Log Baud Rate: 115200
[19:30:48][C][logger:451]:   Hardware UART: USB_SERIAL_JTAG
[19:30:48][C][uart.arduino_esp32:137]: UART Bus 0:
[19:30:48][C][uart.arduino_esp32:138]:   TX Pin: GPIO10
[19:30:48][C][uart.arduino_esp32:139]:   RX Pin: GPIO20
[19:30:48][C][uart.arduino_esp32:141]:   RX Buffer Size: 256
[19:30:48][C][uart.arduino_esp32:143]:   Baud Rate: 9600 baud
[19:30:48][C][uart.arduino_esp32:144]:   Data Bits: 8
[19:30:48][C][uart.arduino_esp32:145]:   Parity: NONE
[19:30:48][C][uart.arduino_esp32:146]:   Stop bits: 2
[19:30:48][C][modbus:143]: Modbus:
[19:30:48][C][modbus:145]:   Send Wait Time: 250 ms
[19:30:48][C][modbus:146]:   CRC Disabled: NO
[19:30:48][C][uptime.sensor:031]: Uptime Sensor 'PZEM-017 uptime'
[19:30:48][C][uptime.sensor:031]:   Device Class: 'duration'
[19:30:48][C][uptime.sensor:031]:   State Class: 'total_increasing'
[19:30:48][C][uptime.sensor:031]:   Unit of Measurement: 's'
[19:30:48][C][uptime.sensor:031]:   Accuracy Decimals: 0
[19:30:48][C][uptime.sensor:031]:   Icon: 'mdi:timer-outline'
[19:30:48][C][pzemdc:057]: PZEMDC:
[19:30:48][C][pzemdc:058]:   Address: 0x1E
[19:30:48][C][pzemdc:059]: Voltage 'PZEM-017 Voltage'
[19:30:48][C][pzemdc:059]:   Device Class: 'voltage'
[19:30:48][C][pzemdc:059]:   State Class: 'measurement'
[19:30:48][C][pzemdc:059]:   Unit of Measurement: 'V'
[19:30:48][C][pzemdc:059]:   Accuracy Decimals: 1
[19:30:48][C][pzemdc:060]: Current 'PZEM-017 Current'
[19:30:48][C][pzemdc:060]:   Device Class: 'current'
[19:30:48][C][pzemdc:060]:   State Class: 'measurement'
[19:30:48][C][pzemdc:060]:   Unit of Measurement: 'A'
[19:30:48][C][pzemdc:060]:   Accuracy Decimals: 3
[19:30:48][C][pzemdc:061]: Power 'PZEM-017 Power'
[19:30:48][C][pzemdc:061]:   Device Class: 'power'
[19:30:48][C][pzemdc:061]:   State Class: 'measurement'
[19:30:48][C][pzemdc:061]:   Unit of Measurement: 'W'
[19:30:48][C][pzemdc:061]:   Accuracy Decimals: 1
[19:30:48][C][pzemdc:062]: Energy 'PZEM-017 Energy'
[19:30:48][C][pzemdc:062]:   Device Class: 'energy'
[19:30:48][C][pzemdc:062]:   State Class: 'total_increasing'
[19:30:48][C][pzemdc:062]:   Unit of Measurement: 'kWh'
[19:30:48][C][pzemdc:062]:   Accuracy Decimals: 3
[19:30:48][C][restart:068]: Restart Switch 'PZEM-017 restart'
[19:30:48][C][restart:070]:   Icon: 'mdi:restart'
[19:30:48][C][restart:091]:   Restore Mode: always OFF
[19:30:48][C][mdns:115]: mDNS:
[19:30:48][C][mdns:116]:   Hostname: pzem-017-esphome-web-c03388
[19:30:48][C][ota:096]: Over-The-Air Updates:
[19:30:48][C][ota:097]:   Address: pzem-017-esphome-web-c03388.local:3232
[19:30:48][C][ota:103]:   OTA version: 2.
[19:30:48][C][api:139]: API Server:
[19:30:48][C][api:140]:   Address: pzem-017-esphome-web-c03388.local:6053
[19:30:48][C][api:142]:   Using noise encryption: YES
[19:30:48][C][wifi_signal.sensor:009]: WiFi Signal 'PZEM-017 WiFi Signal Sensor'
[19:30:48][C][wifi_signal.sensor:009]:   Device Class: 'signal_strength'
[19:30:48][C][wifi_signal.sensor:009]:   State Class: 'measurement'
[19:30:48][C][wifi_signal.sensor:009]:   Unit of Measurement: 'dBm'
[19:30:48][C][wifi_signal.sensor:009]:   Accuracy Decimals: 0
[19:30:48][C][wifi_info:009]: WifiInfo IPAddress 'PZEM-017 IP Address'
[19:30:48][C][wifi_info:011]: WifiInfo SSID 'PZEM-017 Connected SSID'
[19:30:55][D][sensor:094]: 'PZEM-017 uptime': Sending state 975.65503 s with 0 decimals of accuracy
[19:31:11][D][sensor:094]: 'PZEM-017 WiFi Signal Sensor': Sending state -74.00000 dBm with 0 decimals of accuracy
[19:31:25][D][sensor:094]: 'PZEM-017 uptime': Sending state 1005.65503 s with 0 decimals of accuracy
[19:31:41][D][sensor:094]: 'PZEM-017 WiFi Signal Sensor': Sending state -74.00000 dBm with 0 decimals of accuracy
[19:31:55][D][sensor:094]: 'PZEM-017 uptime': Sending state 1035.65601 s with 0 decimals of accuracy
[19:32:11][D][sensor:094]: 'PZEM-017 WiFi Signal Sensor': Sending state -74.00000 dBm with 0 decimals of accuracy
[19:32:25][D][sensor:094]: 'PZEM-017 uptime': Sending state 1065.65002 s with 0 decimals of accuracy

Takže asi půjdu obráceným směrem. Dám tam převodník a uvidím.

[TomHC]

Zmeň si adresu na default = 1 (tuším)

address: 30

[rva]

Tak už to funguje (zatím s pseodobočníkem).

PZEM-017 + ESP32 C3

Zlobila v yaml řádka s adresou boardu, tak jsem ji okomentoval:

Kód: Vybrat vše

    #address: 30

[TomHC]

Tak super! Ja som pokusne menil adresu a nakoniec tak aj zostala. Škoda že sa nedá zmeniť 8N2 na 8N1, využil by som existujúcu zbernicu kde mám menič a shunt.

[TomHC]

Len doplním, že to od nasadenia funguje ku plnej spokojnosti