Time-Delay Electronic Controller
AssemblyA quartz-crystal timer that counts down from a programmed time to unlock, with battery backup, keypad input, and audit log of unlock events. A full specification article for this item is being written. Meanwhile its bill of materials and connections are below.
Bill of materials for Time-Delay Electronic Controller
9 top-level lines as of r173031| # | Item / sub-assembly | Part no. | Qty/assy | Ext. qty | Parts | Type |
|---|---|---|---|---|---|---|
| 1 | Safe Deposit System Rtc Module | time-delay-safe-safe-deposit-system-rtc-module | 1× | 1 | · | part |
| 2 | Microcontroller | mcu | 1× | 1 | · | part |
| 3 | Bare PCB | pcb-bare | 1× | 1 | · | part |
| 4 | Keypad | time-delay-safe-keypad | 1× | 1 | · | part |
| 5 | LCD Panel | lcd-panel | 1× | 1 | · | part |
| 6 | Backup Battery | time-delay-safe-backup-battery | 1× | 1 | · | part |
| 7 | Battery Charger | time-delay-safe-battery-charger | 1× | 1 | · | part |
| 8 | Connector | connector | 3× | 3 | · | part |
| 9 | Power Supply | power-supply | 1× | 1 | · | part |