Here is a non exhaustive list of planned features :

• esp32 and HV5530 communication (using spi library)
• Get date using NTP protocol
• Control date/hour format using HomeKit + check temperature
• temperature sensors (DS18B20 + SHT85 + BME680)
• Relative Humidity sensors (SHT85 + BME680)
• Pressure sensors (BME680)
• microSD Card logging
• Use of DS3231SN specific RTC

ESP-IDF Components library is used for the 3 sensors and the RTC clock

The schematics will be published The board is designed to drive 8 IN-18 tubes to display up to 1/100s or several data (temperature : humidity : pressure)