I have a Ras Pi Pico which I am using for data collection due to the required sampling frequency. I would like to collect that data and send to the Ras Pi 4.0 so I can use the data elsewhere. Is this possible if so can you guide me how to do this please?
I can give you few ideas, not exact tutorial here.
There are many protocols you can use to achieve this.
- UART of Rpi Pico <--> UART of Rpi4 ( dont forget cross connect RX & TX of each other pi's.)
- Use SPI
- Use a http server on pi4 using python code , and add http client on pico ... There are endless possibilities like these. If you want very simple and fast implementation, I personally recommend to use UART for small size of data transfer, else use ethernet based http server/client if data is huge.