How many SPI, I2C and UART interfaces does the Heltec ESP32 LoRa V3 module have?

#1

I’m thinking of purchasing the Heltec ESP32 LoRa to send variable data to the internet, but I’m unsure whether this microcontroller has enough SPI, I2C, and UART interfaces for my project, since some are already occupied by the LoRa module and the OLED display. Specifically, I need one free UART interface to use a MAX485 sensor, two SPI interfaces to use two MAX31865 modules with two PT100 temperature sensors, and two I2C interfaces for two INA260 modules that measure voltage and current.

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#2

You can re-use SPI interfaces with only a second CS (= NSS) pin for the second interface. That way, you can use one SPI interface for both MAX modules or even re-use the LoRa of display interface depending on what is broken out, depending on which version of the ESP32 LoRa you are looking at.
With SPI sharing you should be able to get away with the available pins.