On The Brick Experiment Channel, they show how they built this really amazing R/C controlled Lego-powered sub housed in an acrylic cylinder and using an actuated 60ml syringe as a ballast tank.
The sub also has a pressure sensor, a distance sensor, and is controlled by a RBpi Zero 2. The engineering on this thing is jaw-droppingly clever.
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Python for Microcontrollers – Adafruit Daily — Python on Microcontrollers Newsletter: A New Arduino MicroPython Package Manager, How-Tos and Much More! #CircuitPython #Python #micropython @ThePSF @Raspberry_Pi
EYE on NPI – Adafruit Daily — EYE on NPI Maxim’s Himalaya uSLIC Step-Down Power Module #EyeOnNPI @maximintegrated @digikey