Stateful questbox
A GPS powered box that makes you visit a few spots before opening
Description
It is similar to questbox, but it stores a small amount state of information in EEPROM, so you have to visit two or three different places before it opens.
Design
Needed hardware:
- Arduino Uno
- Reverse Geocache Version 2 (or a protoshield)
- GlobalSat EM-406A GPS module
- 2×8 blue LCD with connector header and cable
- Hitec HS-55 servo motor
- 4-40 push rod and clevis for latch (some versions provide a Z-bend rod instead)
- 2 AA battery holder
- Metallic push button with embedded blue LED and 4-pin cable
- Pololu low voltage switch
- Pololu 5 V boost regulator
- JST connector for EM-406A GPS module
- Straight and right-angle header pins for the display, servo, and pushbutton connectors
- Two resistors for current limiting and display contrast adjustment
- Two small capacitors for power smoothing
- larger capacitor for display contrast circuit
Total hardware cost: 137$ + shipping
Aditional materials:
- A nice box
- Epoxy glue, wood to cover pieces, tools
You can find assembling instructions in sundial page (you can buy most materials from them)
I will upload stateful code and post a link here, unfortunately I wont get all need hardware on time, so this is just an idea :)
Code written so far:
Inspiration:
Conclusion
Learned how to integrate many components and libraries all toghether, I'll have to travel a bit to test it :)
Budget can be cut quite a bit changing the concept a bit:
- Change GPS with a numerical keypad: the 'player' has to guess/obtain a code instead of traveling to a location
- Polulu switch and regulator can be exchanged for a latching relay with capacitance coupling
