Instructions

5
Technical data:
Microcontroller ATmega168, 16 KB Flash, clock rate 8 MHz
120 red SMD LEDs, multiplexed
Sound output via piezo electroacoustic transducer
Operating voltage 4.5 V (3 AA batteries required)
Current consumption: 5 mA to 15 mA, depending on display
content
Power consumption in sleep mode: 20 μA
Operating time with one set of batteries: approx. 100 hours
Material in kit:
Microcontroller board with LED display
Piezo electroacoustic transducer
Battery compartment for three mignon cells
Screws, nuts, spacers
Plastic distribution plate
Double-sided adhesive tape
Assembly
The core of the kit is a fully equipped board with buttons,
the microcontroller and all LEDs. There are two connectors,
PWR (Power) for connecting the battery compartment and LS
(Loudspeaker) for the piezo loudspeaker.