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ECL-132 Large-Screen Remote Control Digital Clock
(Plug-In remote control version)
ECL-132 has the following functions: memorize before power-down, accurate time adjustment,
on time alarm
, 5
independent alarms,
automatic error correction
, closeable LED display.
1. Kit
Manual
Model: ECL-132
Model Name: Large-Screen Remote Control Clock
Dimensions: Length 233 * Width 93 * Height 30mm
Operating voltage: 5V (USB power)
Operating current: 30 ~ 50mA (depending on the displaying color)
2.
Principle Of Operation
The system consists of Minimum system, infrared receiver circuit, display circuit, buzzer circuit, clock chip and power
packs.
(1) Minimum system,:
including power-on reset circuit U1 (STC11F04E), C1, R5 composition, C4, C5, Y1 constitute a clock circuit.
(2)The infrared receiver circuit:
U4 is responsible for receiving the signal transmitted from the remote control, after shaping amplified by an output pin,
and transmitted to the microcontroller processing.
(3)Display circuit:
U3 (74HC138N) 3-8 line decoder, Q1-Q4, R1-R4 and 132 LED components.
(4)buzzer circuit:
Including R6, Q5 and LS1, button sounds, hourly chime, the alarm and other sound output from the MCU P3.1 port, via
Q5 driver sound by LS1.
(5)Clock Chip:
U2 (DS1302), Y2, C6, C7 and BT1 composition.
(7)Power section:
J1 extension cords, C2, C3 filtering.
3. Operating Instructions
A. key general features:
Press the middle button to enter the main menu;
1) Adjust Time : LED is blinking is currently selected position, after adjusting the hour and minute, then press "main
button" to save and exit, enter alarm settings submenu.
2) Alarm setup : At first is 5-way total alarm selection, the first position shows C, the other two position will display
