ALARM CLOCK & THERMOMETER KIT

Alarm clock views

In the pictures above the red pushbutton is Time_Set while the black pushbuttons are Minutes_Set and Hours_Set. The alarms are controlled by the two top mounted three-position toggle switches; the three positions are: Alarm_On, Alarm_Off, Alarm_Set. The optional rear mounted toggle switch selects time or temperature operation. Like the old CK2 clock, the CK3 alarm clock kit also uses the DB-1 clock display board. However the CK3 has several major improvements over the old CK2 clock kit.

Clock kit Temperature Battery Super-Cap Alarm1 Alarm2 COM port Current-loop PIC16F87
CK2 X X
CK3 X X X X X X X

SPECIFICATIONS

Dimensions:
  • Case (inches): 5.08 wide x 5.25 deep x 1.5 high
  • Case (mm): 129.03 wide x 133.35 deep x 38.1 high
  • PacTec CM5-125 or
  • Simco 150X5
Display:
  • DB-1 Clock Display
  • Four-digit seven-segment red LED
  • Digit height = 0.56 inches = 14.2 mm
  • Four annunciator LEDs
Current-loop output:
  • DIN-5 connector
  • Configurable as MIDI_OUT or
  • alarm audio out or
  • alarm gate out.
 RS-232 COM port:
  • Female DB-9 DCE connector.
  • Jumper selectable baud rates of 2400, 4800, 9600, and 19200.
Temperature:
  • Operation from 0 to 70 °C, 32 to 158 °F.
  • DS18S20 high precision thermometer chip with 0.5°C accuracy.
  • Jumper/switch selectable temperature display, with
  • jumper/switch selectable Centigrade or Fahrenheit format.
 Time:
  • 32768 Hz watch crystal timebase.
  • DS1305 clock/calendar chip.
  • Super-cap backup power good for 8 days.
  • Jumper/switch selectable 12 or 24 hour display format.
Microcontroller:
  • PIC16F87, reprogrammable flash microcontroller.
  • Socketed 18-pin DIP.
 Software:
  • Microchip assembler (MPASM) source code included.

WHAT ELSE DO I NEED?

None of the kits include the items listed here - which you must purchase yourself.

PRICES

Item Description Part Number Kit Price
CASE hardware - Simco 150X5 (specify black or beige), red front panel, black rear panel, four circuit board mounting screws CK3-CASE $12.25
DB-1 Clock Display DB1-CLOCK $13.00
CK3 circuit board kit CK3-PCB-KIT $56.00
CK3 circuit board kit, plus DB1-Clock kit, plus case hardware CK3-FULL-KIT $74.00

All kits include an assembly/instruction manual and complete schematics in PDF format.

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