Recently, the ESPHome firmware has been changed to prevent the same controller I/O ports from being reused to create different entities.

These updates in ESPHome version 2023.12.0 also affected the examples developed by our company for the GGreg20_V3 Geiger counter ionizing radiation detector module.

According to the user’s request (https://github.com/iotdevicesdev/GGreg20_V3-ESP32-HomeAssistant-ESPHome/issues/2) regarding the repository for GGreg20_V3-ESP32-HomeAssistant-ESPHome, we have made the necessary updates to the configuration YAML file.

Now this example will work properly with the new ESHome configuration validation and you will be able to upgrade to newer versions of ESPHome without any problems.

We also plan to update other repositories with this issue.

Read the full article with examples and solutions here:

https://iot-devices.com.ua/en/about-changes-in-esphome-configuration-validation-pin-reuse-validation-en/