There is a template of ESPhome project with such features at esphome-project-template

I am not a software developper so I apologize in advance.

I read an re-re-read the instruction but I cannot get the temperature from the IHT-2PB using and ESP32 development board. From the log I can see that I can connect for a while before disconnecting and getting error message. The temperature never gets reported to home assistant.

Here is my yaml file

esphome:
name: esphome-thermostat
friendly_name: esphome thermostat

esp32:
board: esp32doit-devkit-v1
framework:
type: esp-idf

Enable logging

logger:

Enable Home Assistant API

api:
encryption:
key: "uLfai8cGoNlB4Vc9DacskJP2OumT18+ZZPG4rJPNQp4="

ota:
password: "935077bb3315c2ac089c23d3a0126477"

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

Enable fallback hotspot (captive portal) in case wifi connection fails

ap:
ssid: "Esphome-Thermostat"
password: "iemMwhXKzPTT"

captive_portal:

<<: !include Inkbird_IHT_2PB.yaml

Here are the logs.

INFO ESPHome 2023.12.9
INFO Reading configuration /config/esphome-thermostat.yaml...
INFO Starting log output from 192.168.2.134 using esphome API
INFO Successfully connected to esphome-thermostat @ 192.168.2.134 in 0.010s
INFO Successful handshake with esphome-thermostat @ 192.168.2.134 in 0.198s
[22:43:05][I][app:102]: ESPHome version 2023.12.9 compiled on Feb 4 2024, 21:34:27
[22:43:05][C][wifi:573]: WiFi:
[22:43:05][C][wifi:405]: Local MAC: E4:65:B8:12:BB:88
[22:43:05][C][wifi:410]: SSID: [redacted]
[22:43:05][C][wifi:411]: IP Address: 192.168.2.134
[22:43:05][C][wifi:413]: BSSID: [redacted]
[22:43:05][C][wifi:414]: Hostname: 'esphome-thermostat'
[22:43:05][C][wifi:416]: Signal strength: -13 dB ▂▄▆█
[22:43:05][C][wifi:420]: Channel: 6
[22:43:05][C][wifi:421]: Subnet: 255.255.255.0
[22:43:05][C][wifi:422]: Gateway: 192.168.2.1
[22:43:05][C][wifi:423]: DNS1: 192.168.2.1
[22:43:05][C][wifi:424]: DNS2: 207.164.234.193
[22:43:05][C][logger:439]: Logger:
[22:43:05][C][logger:440]: Level: DEBUG
[22:43:05][C][logger:441]: Log Baud Rate: 115200
[22:43:05][C][logger:443]: Hardware UART: UART0
[22:43:05][C][template.binary_sensor:028]: Template Binary Sensor 'Inkbird IHT-2PB connected'
[22:43:05][C][template.sensor:022]: Template Sensor 'Inkbird IHT-2PB probe manual'
[22:43:05][C][template.sensor:022]: Device Class: 'temperature'
[22:43:05][C][template.sensor:022]: State Class: 'measurement'
[22:43:05][C][template.sensor:022]: Unit of Measurement: '°C'
[22:43:05][C][template.sensor:022]: Accuracy Decimals: 1
[22:43:05][C][template.sensor:022]: Icon: 'mdi:thermometer-probe'
[22:43:05][C][template.sensor:023]: Update Interval: 60.0s
[22:43:06][C][template.sensor:022]: Template Sensor 'Inkbird IHT-2PB probe 1'
[22:43:06][C][template.sensor:022]: Device Class: 'temperature'
[22:43:06][C][template.sensor:022]: State Class: 'measurement'
[22:43:06][C][template.sensor:022]: Unit of Measurement: '°C'
[22:43:06][C][template.sensor:022]: Accuracy Decimals: 1
[22:43:06][C][template.sensor:022]: Icon: 'mdi:thermometer-probe'
[22:43:06][C][template.sensor:023]: Update Interval: 60.0s
[22:43:06][C][template.sensor:022]: Template Sensor 'Inkbird IHT-2PB probe 2'
[22:43:06][C][template.sensor:022]: Device Class: 'temperature'
[22:43:06][C][template.sensor:022]: State Class: 'measurement'
[22:43:06][C][template.sensor:022]: Unit of Measurement: '°C'
[22:43:06][C][template.sensor:022]: Accuracy Decimals: 1
[22:43:06][C][template.sensor:022]: Icon: 'mdi:thermometer-probe'
[22:43:06][C][template.sensor:023]: Update Interval: 60.0s
[22:43:06][C][bluetooth_proxy:088]: Bluetooth Proxy:
[22:43:06][C][bluetooth_proxy:089]: Active: YES
[22:43:06][C][ble_switch:068]: BLE Client Switch 'Inkbird IHT-2PB enable'
[22:43:06][C][ble_switch:070]: Icon: 'mdi:bluetooth'
[22:43:06][C][ble_switch:091]: Restore Mode: always OFF
[22:43:06][C][ble_sensor:017]: BLE Sensor 'Inkbird IHT-2PB last probe data'
[22:43:06][C][ble_sensor:017]: State Class: ''
[22:43:06][C][ble_sensor:017]: Unit of Measurement: ''
[22:43:06][C][ble_sensor:017]: Accuracy Decimals: 0
[22:43:06][C][ble_sensor:018]: MAC address : 62:00:A1:2F:4F:35
[22:43:06][C][ble_sensor:019]: Service UUID : 0000FFE0-0000-1000-8000-00805F9B34FB
[22:43:06][C][ble_sensor:020]: Characteristic UUID: 0000FFE4-0000-1000-8000-00805F9B34FB
[22:43:06][C][ble_sensor:021]: Descriptor UUID : 00000000-0000-0000-0000-000000000000
[22:43:06][C][ble_sensor:022]: Notifications : YES
[22:43:06][C][ble_sensor:023]: Update Interval: 60.0s
[22:43:06][C][esp32_ble:374]: ESP32 BLE:
[22:43:06][C][esp32_ble:376]: MAC address: E4:65:B8:12:BB:8A
[22:43:06][C][esp32_ble:377]: IO Capability: none
[22:43:06][C][esp32_ble_tracker:645]: BLE Tracker:
[22:43:06][C][esp32_ble_tracker:646]: Scan Duration: 300 s
[22:43:06][C][esp32_ble_tracker:647]: Scan Interval: 1100.0 ms
[22:43:06][C][esp32_ble_tracker:648]: Scan Window: 1100.0 ms
[22:43:06][C][esp32_ble_tracker:649]: Scan Type: ACTIVE
[22:43:06][C][esp32_ble_tracker:650]: Continuous Scanning: True
[22:43:06][C][ble_client:027]: BLE Client:
[22:43:06][C][ble_client:028]: Address: 62:00:A1:2F:4F:35
[22:43:06][C][captive_portal:088]: Captive Portal:
[22:43:06][C][mdns:115]: mDNS:
[22:43:06][C][mdns:116]: Hostname: esphome-thermostat
[22:43:06][C][ota:097]: Over-The-Air Updates:
[22:43:06][C][ota:098]: Address: esphome-thermostat.local:3232
[22:43:06][C][ota:101]: Using Password.
[22:43:06][C][api:139]: API Server:
[22:43:06][C][api:140]: Address: esphome-thermostat.local:6053
[22:43:06][C][api:142]: Using noise encryption: YES
[22:43:38][W][ble_sensor:080]: Error reading char at handle 21, status=2
[22:43:40][D][esp-idf:000]: W (121264) BT_APPL: gattc_conn_cb: if=3 st=0 id=3 rsn=0x13

[22:43:40][D][esp-idf:000]: W (121271) BT_APPL: gattc_conn_cb: if=4 st=0 id=4 rsn=0x13

[22:43:40][D][esp-idf:000]: W (121274) BT_APPL: gattc_conn_cb: if=5 st=0 id=5 rsn=0x13

[22:43:40][D][esp-idf:000]: W (121275) BT_APPL: gattc_conn_cb: if=6 st=0 id=6 rsn=0x13

[22:43:40][D][esp-idf:000]: W (121278) BT_HCI: hcif disc complete: hdl 0x0, rsn 0x13

[22:43:40][D][ble_client.automation:069]: Disconnected from 62:00:A1:2F:4F:35
[22:43:40][D][ble_client.automation:069]: Disconnected from 62:00:A1:2F:4F:35
[22:43:40][W][ble_sensor:037]: [Inkbird IHT-2PB last probe data] Disconnected!
[22:43:40][D][sensor:094]: 'Inkbird IHT-2PB last probe data': Sending state nan with 0 decimals of accuracy
[22:43:40][D][ble_client_lambda:026]: Disconnected from BLE device
[22:43:40][D][binary_sensor:036]: 'Inkbird IHT-2PB connected': Sending state OFF
[22:43:57][D][esp32_ble_client:053]: [0] [62:00:A1:2F:4F:35] Found device
[22:43:57][D][esp32_ble_tracker:215]: Pausing scan to make connection...
[22:43:57][I][esp32_ble_client:069]: [0] [62:00:A1:2F:4F:35] 0x00 Attempting BLE connection
[22:43:58][D][ble_client.automation:050]: Connection established with 62:00:A1:2F:4F:35
[22:43:58][D][ble_client.automation:050]: Connection established with 62:00:A1:2F:4F:35
[22:43:58][I][ble_sensor:031]: [Inkbird IHT-2PB last probe data] Connected successfully!
[22:43:58][I][esp32_ble_client:201]: [0] [62:00:A1:2F:4F:35] Connected
[22:43:58][D][ble_client_lambda:016]: Connected to BLE device
[22:43:58][D][binary_sensor:036]: 'Inkbird IHT-2PB connected': Sending state ON
[22:43:58][D][ble_client.automation:063]: Found characteristic 0000FFE9-0000-1000-8000-00805F9B34FB on device 62:00:A1:2F:4F:35
[22:43:58][D][ble_client.automation:063]: Found characteristic 0000FFE4-0000-1000-8000-00805F9B34FB on device 62:00:A1:2F:4F:35
[22:43:58][D][esp32_ble_tracker:266]: Starting scan...
[22:44:37][W][ble_sensor:080]: Error reading char at handle 21, status=2
[22:44:44][D][esp-idf:000]: W (185379) BT_APPL: gattc_conn_cb: if=3 st=0 id=3 rsn=0x13

[22:44:44][D][esp-idf:000]: W (185384) BT_APPL: gattc_conn_cb: if=4 st=0 id=4 rsn=0x13

[22:44:44][D][esp-idf:000]: W (185387) BT_APPL: gattc_conn_cb: if=5 st=0 id=5 rsn=0x13

[22:44:44][D][esp-idf:000]: W (185388) BT_APPL: gattc_conn_cb: if=6 st=0 id=6 rsn=0x13

[22:44:44][D][esp-idf:000]: W (185392) BT_HCI: hcif disc complete: hdl 0x0, rsn 0x13

[22:44:44][D][ble_client.automation:069]: Disconnected from 62:00:A1:2F:4F:35
[22:44:44][D][ble_client.automation:069]: Disconnected from 62:00:A1:2F:4F:35
[22:44:44][W][ble_sensor:037]: [Inkbird IHT-2PB last probe data] Disconnected!
[22:44:44][D][sensor:094]: 'Inkbird IHT-2PB last probe data': Sending state nan with 0 decimals of accuracy
[22:44:44][D][ble_client_lambda:026]: Disconnected from BLE device
[22:44:44][D][binary_sensor:036]: 'Inkbird IHT-2PB connected': Sending state OFF
[22:45:00][D][esp32_ble_client:053]: [0] [62:00:A1:2F:4F:35] Found device
[22:45:00][D][esp32_ble_tracker:215]: Pausing scan to make connection...
[22:45:00][I][esp32_ble_client:069]: [0] [62:00:A1:2F:4F:35] 0x00 Attempting BLE connection
[22:45:01][D][ble_client.automation:050]: Connection established with 62:00:A1:2F:4F:35
[22:45:01][D][ble_client.automation:050]: Connection established with 62:00:A1:2F:4F:35
[22:45:01][I][ble_sensor:031]: [Inkbird IHT-2PB last probe data] Connected successfully!
[22:45:01][I][esp32_ble_client:201]: [0] [62:00:A1:2F:4F:35] Connected
[22:45:01][D][ble_client_lambda:016]: Connected to BLE device
[22:45:01][D][binary_sensor:036]: 'Inkbird IHT-2PB connected': Sending state ON
[22:45:01][D][ble_client.automation:063]: Found characteristic 0000FFE9-0000-1000-8000-00805F9B34FB on device 62:00:A1:2F:4F:35
[22:45:01][D][ble_client.automation:063]: Found characteristic 0000FFE4-0000-1000-8000-00805F9B34FB on device 62:00:A1:2F:4F:35
[22:45:01][D][esp32_ble_tracker:266]: Starting scan...

Thanks for any help you can provide.