Pet chickens like to run around and scratch up their yard during the day, but must be safely locked away at night to prevent predators from eating them. Most chicken-keepers accept the twice-daily chore of letting the hens out in the morning, and locking them up at night. This is a project to automate that … Continue reading Super Simple Automatic Chicken Coop Door
This project documents how to make a windvane to sense the wind direction. It was designed for an autonomous sailboat but could be used in other applications. The structure is mostly 3D printed and uses a gopro mount to attach to the hull. The main sensor is a magnetic encoder that outputs an analog voltage … Continue reading Electronic Windvane
Here are two images I look up often when using ESP8266 boards. I like the NodeMCU versions, they are cheap and easy to use with USB power or a battery. The pins are not labeled in a friendly way for the arduino compiler, however. The arduino compiler uses the GPIO numbers on the chip, while … Continue reading ESP8266 NodeMCU (Arduino compiler) Pins. Now with WeMos D1 Mini!
Monitoring the morning brew with the internet of things. Do you want to know when your coffee is done brewing but are too lazy to walk over to see for yourself? Do you need to monitor your coffee pot when you are out of town? Probably not, but here is one solution to the non-problem. … Continue reading Internet of Coffee!
Dumbo is an autonomous research vessel constructed by students at Cal Maritime. Dumbo carries temperature, salinity, and dissolved oxygen sensors and makes oceanographic observations in the waters off of the Cal Maritime Campus. This work has been supported by the CSU Council on Ocean Affairs, Science & Technology (COAST). Dumbo is guided by an Ardupilot … Continue reading Dumbo the Autonomous Boat
I have been documenting the build of n3m0, my latest autonomous boat over at hackaday.io. It has been pretty successful so far, here are some links: The project page. I won $1000 in the hackaday prize! Actually $2000! Feature on hackaday.com Feature on hackster.io Someone else is already building another one
If you're looking for my old site, sorry it got hacked and had to be put down. You can email me (mholden at csum dot edu) if you are trying to find something specific.