Powering a soil moisture sensor intermittently with a Micro Bit

Sensors Environmental
1

I am planning a project that uses the BBC Micro Bit, the Sparkfun Weather Bit, the Sparkfun Soil Moisture Sensor (with screw terminals), Sparkfun Waterproof Soil Temperature Sensor, and the Sparkfun 12" M/M Jumper Wires.
My plan is to use the Weather Bit to provide data (air pressure, humidity, altitude, air temp, soil moisture, and soil temp) to the Micro Bit, which will log data every 30 minutes.
I am coding on Microsoft Makecode using blocks. To help slow down corrosion on the moisture sensor, I only want the system to provide power every 30 minutes, when the data is being logged, to the soil moisture sensor instead of powering it continuously. I need help configuring the code (shown in the pictures) and the connection between the moisture sensor and the Weather Bit to help solve the problem. Can you help me with this?

Picture of code:

20250323_201331
20250323_2013311920×1440 191 KB

2

You might need to add a power mgmt extension (I’m not very familiar with micro:bit ecosystem), but it looks like you shoud be able to use these notes if your board is a V2 (probably) Power Management V2 — BBC micro:bit MicroPython 2 documentation or this page for V1

Then just invoke a deepsleep function after writing the sd data and begin a sleep timer that re-runs the whole thing after waking :smiley:

3

Thank you! But what is MicroPython; is it the same as Python?

4

Sort of, it’s a subset of python designed to be able to run on small microcontrollers; check out their main page https://micropython.org/ (here’s a list of the main differences MicroPython differences from CPython — MicroPython latest documentation)