Alarm Clock & Thermometer
This clock kit features dual alarms, a temperature display,
time-keeping through power outages, a serial port, and a MIDI style output.
The CK3 alarm clock kit uses the DB-1 clock display board.
The manual for the Alarm Clock & Thermometer kit is available on
the Data & Documentation page. See it on
Price: $68.99 circuit board kit. This kit includes everything except the
power supply, case and switches.
- The CK3 clock board and DB1 display board were designed to fit
in the following plastic cases: Simco 150X5,
Pactec CM5-125, Bud PC-11402. You can of course purchase a different case
or build your own.
- A 32768 Hz watch crystal is the time reference for the DS1305
clock/calendar chip. A super-capacitor backup keeps the DS1305 ticking
for 8 days during a power outage.
- The temperature sensor is a DS18S20 rated for 0.5 C accuracy
from 0 to 70 C.
- User supplied +9 volt DC wall-wart, 2.1 mm barrel connector, center positive.
Current consumption >= 100 mA.
The current firmware version is B.04.