Week 3: New Components

Week 3:

The aim for this week is to finalise the major functions of the project, these being the code for the fingerprint sensor and the keypad, as well as getting these

This Week's Activities

This week we ordered a keypad to replace the current broken one as well as a relay to control the lock for the safe. The code for the verification of the passcode was also finished, allowing us to use a stored password

New Components:

Issues Encountered

While the new keypad and relay are seen to work. The keypad was tested with the code used on the old keypad and also didnt work, but rather than entering random inputs, it just didnt accept inputs. This was put down to an issue with the code library not working with an arduino R4 (the one we are using). The code library used was then changed to the adafruit keypad library, this fixed the problem with the new keypad.
 
There was also an issue with the lock component. With no documentation showing the pinout for the ground and positive connections, the lock was either damaged because we connected the wiring to it incorrectly, or it was damaged in transit. We do not think the issue can be resolved so we have opted to use an LED to indicate if the safe is open or not. In the ideal case or in the real product this would surely be replaced with an actual lock system.
 

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