uThis module is adjustable step-down module, can adjust the module above the blue star output voltage adjustable resistance to change.Input and output pressure difference is 1 V, small can output voltage of 0.8 V.

uModule indicated above IN - (input), + (input), IN the OUT - (output), the OUT + (output) must be correct, otherwise may cause damage of module.

uBattery charging method of use:1. Make sure you need to recharge battery float charging voltage and charging current, input voltage module;2. Adjust the constant-voltage potentiometer, the output voltage regulation to around 5 v.3. The output short circuit current is measured with a multimeter 10 a current block, and regulate the flow of constant potentiometer output current reaches a predetermined charging current value;4. The lamp current charging the default delivery is 0.1 times the charging current (constant current value).5. Adjust the constant-voltage potentiometer to output voltage float charging voltage;6. Battery is connected, try to charge.(1, 2, 3, 4, 5 steps for input power management module, the output light batteries!)

uLED constant current drive method of use:1. Make sure you need to drive the LED working current and working voltage;2. Adjust the constant-voltage potentiometer, the output voltage regulation to around 5 v.3. The output short circuit current is measured with a multimeter 10 a current block, and regulate the flow of constant potentiometer output current to the expected LED working current;4. Adjust the constant-voltage potentiometer to output voltage LED working voltage;5. Plug in the LED, commissioning.(1, 2, 3, 4 steps for input power management module, the output light leds!)

uCommunication protocol description:1. This module has the function of and computer communications.Data can be read convenient computer module current voltage,

2. Because the output module is TTL level, to achieve and computer communication, but also to the level switch back to the computer can identify RS232 level, need to use this cp2102 usb to TTL moduleTo implement the transformation.

3. The communication protocol is as follows:

Baud rate: 9600 Bps

BB CC ADDR 00 XX XX CRC return command (current)

BB CC ADDR 01 XX XX CRC return command (voltage)

Among them

BB CC of frame head (2 bytes)

ADDR for module address (1 byte)

00 to read current command (1 byte)

01 to read voltage command (1 byte)

XX XX arbitrary value (2 bytes)

CRC CRC check (1 byte)