Arduinopromini+DWM1000 communicate Raspberry PI

We are currently using a combination of arduino promini and DWM1000.

The distance values were measured by using the SPI communication with Aduinopromini+DWM1000 (Promini1) and Adunopromini+DWM1000 (Promini2). I’m trying to connect it to a raspberry pie using USBTTL.

This measured distance value will be used to control the motor using a raspberry pie. Promini1 and Promini2 are trying to code the result from SPI communication using Python in Raspberry Pi, but I don’t know how to get the result from Raspberry Pi.

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