Security keypad with programmable PIN
This module was part of the rack box project — which was terminated when I moved out of my first apartment.
UPA is a user panel for Alarm unit, where the user can enter his/her PIN and activate mode 1 (away mode) or 2 (intruder alarm). The module is monitored by Module stability monitoring unit 2 and a tamper circuit, this will give instant alarm if disconnected. It's not possible to activate mode 2 (intruder alarm) if UPA is disconnected. The PIN is stored in EEPROM and saved trough a power loss.
To activate mode 1 enter PIN + *, a one second green light indicates approved PIN and confirms command.
To activate mode 2 enter PIN + #, a two seconds green light indicates approved PIN and confirms command.
To change PIN enter current PIN + 0, yellow light indicates programming mode. The new PIN is entered and confirmed with #, green light. Any other button will reject the new code and keep the old one, red light indicates this.
When entering wrong PIN
When the wrong PIN is entered you get a red light. If the wrong PIN is entered three times the panel will not be usable for one minute. The red light will flash during this period.
- PD2 Keypad 1
- PD3 Keypad 2
- PD4 Keypad 3
- PD5 Keypad 4
- PB0 Keypad 1
- PB1 Keypad 2
- PB2 Keypad 3
- PB3 Channel 1
- PB4 Channel 2
- PB5 Green LED
- PB6 Red LED
- PB7 Lifesignal (to Module stability monitoring unit 2)
|6.||Blue||Lifesignal (to Module stability monitoring unit 2)|
|7.||Red||Alarm LED from Alarm unit|
|8.||Purple||Green LED from Alarm unit|
|9.||Brown||Red LED from Alarm unit|