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There is an active group of hardware / microcontroller enthusiasts that meet up monthly here in Seattle and I regularly attend.  Recently Scott Shawcroft who is a contract programmer for Adafruit attended the meeting and handed out the Adafruit Gemma M0 with Circuit Python to attendees.  This was a special edition that was made for PyCon 2018 with a custom silkscreen and I snagged one.  Here it is connected to a small Li-poly battery and shown next to an Arduino Uno to give scale: ...
Project Objective: Develop an open source AIS Alarm that alerts sailors that a new marine vessel with AIS is within range   May 11, 2018 Update:  Added video demonstration and added update on future plans   It has been a while since I have worked on this project - had to do my submission for the Open Arduino contest and the Portable Electronics Kit .  But today I went back through the code and implemented the remaining features and did preliminary testing.  Everything ...