5 months into this project and it's finally finished! This is a gadget geocache for my local maker space. Custom PCB (funded by Onboard) interfaced with an Arduino for controlling LEDs in the eyes, giving instructions on how to solve the puzzle through the speaker, checking the password entered, and controlling a solenoid to open the hatch on the bottom when the puzzle is solved. Hand crank on the side turns a geared stepper motor to charge supercapacitors that provide enough power to last a few minutes so nobody has to worry about charging or replacing batteries. The whole thing is covered in epoxy for weatherproofing. Hopefully, it will be up and running in a week or so!
