Example in micropython running on the PYBD with NM3 micropython driver to send sensor readings via the NM3 acoustic modem.
Using OTA Updater from: https://github.com/bensherlock/micropython-ota-updater
A modified NM3 driver from: https://github.com/bensherlock/nm3-python-driver
For an example of usage as part of a PYBD MicroPython application see: https://github.com/bensherlock/micropython-unm3-pybd-example
When used as a OTA updateable module include as: unm3_pybd.main.*