- This is an unassembled kit, you need to have basic soldering skills to do it yourself. The PCB board has big solder joints and pre-marked name for components, very good design for beginners, kids, hobbyists, of course, this make things simple for all users.
- The 52x42x1.2mm sized PCB made from military grade FR-4, equips AT89C2051 chip and 4 digits 0.56 inch LED module, display 24-hour format time.
- Power supply DC 3-6V can be offered by battery or USB port (an USB cable required).
- Accurate time, error range is ±1 sec every 24 hours, can be enabled hourly chime, twice alarm clock setting.
- Seconds correction
- Switch to every minute independent display interface
- Whole time point (8-20 o’clock chime can be turned off)
- 2 kinds of alarm settings (can be turn off)
What’s in the package:
- 2x Metal film resistor 10K
- 2x Ceramic capacitor 30pF
- 1x Ceramic capacitor 0.1uF
- 1x Electrolytic capacitor 10uF/25V
- 1x Network resistor 1K
- 1x Crystal oscillator 12MHz
- 1x Triode S8550
- 2x Button
- 1x Chip AT89C2051
- 1x IC socket
- 1x 5 Active buzzer
- 1x 4-bit digital tube
- 1x DC socket