ESP32 auf MAX31865 für einen PT1000

[uhg90]

Servus Zusammen,


ich wollte meine Solartermie in den Home Assistant einbinden und Steuern ich bekomm aber leider nicht den Kolektorsensor zum laufen Verbaut ist ein PT1000 mit 2 Adern ich hab aber auch nicht die Möglichkeit einen andern Sensor einzubauen, kann mir jemand helfen die Löhtbrücken an 2/3 Wire und 2Wire ist auch gemacht. Verwende dieses Symbol um Code zu posten


die Logs:



INFO ESPHome 2025.8.4
INFO Reading configuration /config/esphome/solar-kollektor.yaml...
INFO Starting log output from 192.168.178.89 using esphome API
INFO Successfully resolved solar-kollektor @ 192.168.178.89 in 0.000s
INFO Successfully connected to solar-kollektor @ 192.168.178.89 in 0.076s
INFO Successful handshake with solar-kollektor @ 192.168.178.89 in 0.008s
[16:37:12][app:200]: ESPHome version 2025.8.4 compiled on Sep 12 2025, 16:33:51
[16:37:12][C][wifi:661]: WiFi:
[16:37:12][C][wifi:444]: Local MAC: 80:B5:4E:C5:20:7C
[16:37:12][C][wifi:449]: SSID: 'Wifi'[redacted]
[16:37:12][C][wifi:452]: IP Address: 192.168.178.89
[16:37:12][C][wifi:456]: BSSID: 98:9B:CB:58:06:8B[redacted]
[16:37:12][C][wifi:456]: Hostname: 'solar-kollektor'
[16:37:12][C][wifi:456]: Signal strength: -47 dB ▂▄▆█
[16:37:12][C][wifi:467]: Channel: 6
[16:37:12][C][wifi:467]: Subnet: 255.255.255.0
[16:37:12][C][wifi:467]: Gateway: 192.168.178.1
[16:37:12][C][wifi:467]: DNS1: 192.168.178.1
[16:37:12][C][wifi:467]: DNS2: 0.0.0.0
[16:37:12][C][logger:252]: Logger:
[16:37:12][C][logger:252]: Max Level: DEBUG
[16:37:12][C][logger:252]: Initial Level: DEBUG
[16:37:12][C][logger:258]: Log Baud Rate: 115200
[16:37:12][C][logger:258]: Hardware UART: USB_CDC
[16:37:12][C][logger:265]: Task Log Buffer Size: 768
[16:37:12][C][spi:067]: SPI bus:
[16:37:12][C][spi:068]: CLK Pin: GPIO12
[16:37:12][C][spi:069]: SDI Pin: GPIO13
[16:37:12][C][spi:070]: SDO Pin: GPIO11
[16:37:12][C][spi:075]: Using HW SPI: SPI
[16:37:12][C][max31865:082]: MAX31865 'Kollektor Temperatur'
[16:37:12][C][max31865:082]: State Class: 'measurement'
[16:37:12][C][max31865:082]: Unit of Measurement: '°C'
[16:37:12][C][max31865:082]: Accuracy Decimals: 2
[16:37:12][C][max31865:082]: Device Class: 'temperature'
[16:37:12][C][max31865:083]: CS Pin: GPIO5
[16:37:12][C][max31865:084]: Update Interval: 10.0s
[16:37:12][C][max31865:085]: Reference Resistance: 4300.00Ω
[16:37:12][C][max31865:085]: RTD: 2-wire 1000.00Ω
[16:37:12][C][max31865:085]: Mains Filter: 50 Hz
[16:37:12][C][esphome.ota:075]: Over-The-Air updates:
[16:37:12][C][esphome.ota:075]: Address: solar-kollektor.local:3232
[16:37:12][C][esphome.ota:075]: Version: 2
[16:37:12][C][safe_mode:018]: Safe Mode:
[16:37:12][C][safe_mode:019]: Boot considered successful after 60 seconds
[16:37:12][C][safe_mode:019]: Invoke after 10 boot attempts
[16:37:12][C][safe_mode:019]: Remain for 300 seconds
[16:37:12][C][api:205]: Server:
[16:37:12][C][api:205]: Address: solar-kollektor.local:6053
[16:37:12][C][api:215]: Noise encryption: NO
[16:37:12][C][mdns:124]: mDNS:
[16:37:12][C][mdns:124]: Hostname: solar-kollektor
[16:37:17][safe_mode:042]: Boot seems successful; resetting boot loop counter
[16:37:17][D][esp32.preferences:142]: Writing 1 items: 0 cached, 1 written, 0 failed
[16:37:17][W][max31865:018]: Overvoltage/undervoltage fault between measurements
[16:37:17][W][max31865:021]: RTDIN- < 0.85 x V_BIAS (FORCE- open) between measurements
[16:37:17][W][max31865:024]: REFIN- < 0.85 x V_BIAS (FORCE- open) between measurements
[16:37:17][W][max31865:027]: REFIN- > 0.85 x V_BIAS between measurements
[16:37:17][W][max31865:031]: RTD Low Threshold between measurements
[16:37:17][W][max31865:034]: RTD High Threshold between measurements
[16:37:17][E][max31865:049]: Fault detection incomplete (0xFF) after 6007μs (datasheet spec is 600μs max)! Aborting read.
[16:37:17][D][sensor:103]: 'Kollektor Temperatur': Sending state nan °C with 2 decimals of accuracy

ich wäre für die Hilfe dank


MfG Uhg90