Question/Issue: Not able to receive data from built-in microphone on ArduCAM Pico4ML-BLE
Project ID: 298644
**Context/Use case: I am trying to measure the flow rate of water using sound with the ArduCAM Pico4ML-BLE but when using the uf2 file deployed for RP2040, the built-in microphone doesn’t seem to work.
I have also tried to use the Data Forwarder but I get the error “Failed to get information off device No valid sensor readings received from device. Note that the data forwarder can only auto-detect frequencies >2Hz. You can override the frequency via --frequency.”
I am now trying to deploy as a C++ library but can’t wrap my head around how I could get the raw features from the microphone.**