5A állandó áramú és állandó feszültségű LED meghajtó lítium-ion akkumulátor töltő modul, állítható áramerősséggel és feszültségmérővel
5A Constant Current and Constant Voltage LED Drive Lithium-Ion Battery Charging Module with Current and Voltmeter Adjustable
Description
This module is an adjustable step-down module, and the output voltage can be changed by adjusting the blue adjustable resistor on the module. The input and output voltage difference is 1V, which can be small

The IN- (input negative), IN (input positive), OUT- (output negative), and OUT (output positive) marked on the module must be connected correctly, otherwise the module may be damaged.
Battery charging method of use:
1. Determine the float voltage and charging current of the rechargeable battery you need, and the input voltage of the module;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined charging current value;
4. The default shipping current of the charging lamp is 0.1 times the charging current (constant current value).
5. Adjust the constant voltage potentiometer to make the output voltage reach the float voltage;
6. Connect the battery and try charging.
(Steps 1, 2, 3, 4, and 5 are for the module input to connect to the power supply, and the output does not connect to the battery without load.)

LED constant current drive How to use:
1. Determine the working current and working voltage you need to drive the LED;
2. Adjust the constant voltage potentiometer to adjust the output voltage to about 5V.
3. Measure the output short-circuit current with the 10A current block of a multimeter, and adjust the constant current potentiometer to make the output current reach the predetermined LED working current;
4. Adjust the constant voltage potentiometer to make the output voltage reach the LED working voltage;
5. Connect the LED and test the machine.
(Steps 1, 2, 3, and 4 are for the module input to be connected to the power supply, and the output is no-load without LED lights.)

Communication protocol description:
1. This module has the function of communicating with the computer. It is convenient for the computer to read the current and voltage data of the module,
2. Since the output of this module is TTL level, to achieve communication with the computer, the level must be converted back to the RS232 level that the computer can recognize. This cp2102 usb to TTL module is needed to achieve the conversion.
3. The communication protocol is as follows:
Baud rate: 9600 Bps
BB CC ADDR 00 XX XX CRC (current return command)

BB CC ADDR 01 XX XX CRC (voltage return command)
among them
BB CC is the frame header (2 bytes)
ADDR is the module address (1 byte)
00 is read current command (1 byte)

01 is read voltage command (1 byte)
XX XX arbitrary value (2 bytes)
CRC CRC check (1 byte)
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