Area of interest
My First Milestone for the Smart Garden is making sure that all of my sensors work (spoiler alert: they didn’t for a while). I tested that each sensor reacted to stimuli by running a sample serial.print code that showed the raw output of each of the sensors.
My Starter Project is the Useless Machine, a machine that, when turned on, turns itself off. I enjoyed this project because I learned how to solder, and it was relatively easy.
The Useless Machine!
How it works
The Useless Machine is powered by three AA batteries. The switch, when turned on, switches the polarity of a motor connected to an arm, causing it to rotate towards the switch. Once it flips the switch, the polarity of the motor is reversed, causing the arm to retract. eventually, the arm hits a snap switch, which stops the motor. There is also an LED that lights up when the motor is active. Some problems I encountered were the LED not working properly due to the fact that I fried one of the anodes. Another problem that I ran into was assembling the box. The rods that I was supposed to screw the plates onto were not actually drilled for screws, so I had to engrave the grooves for the screws myself.