NodeMCU is an open source board design available. The name “NodeMCU” combines “node” and “MCU” (micro-controller unit). Device is used for many open source projects.
We use proven ESP8266 and ESP32 devices powered with tasmota open source firmware for our custom made IoT devices.
If you can’t find low level code device for your needs, you can always ask us for help do design special custom design hardware for you special needs based on arduino or arduino type device. In our projects we always use only original and proven versions of hardware.
You can ask for our help if you search for custom microprocessor based on raspberry type device.