Seeed Grove User manual

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Grove - LED String Light
The Grove - LED String Light module is essentially an LED driver for
the LED string lights included in the pack. Working voltage of the
module is 3.3V/5V. However, the LED string lights require a working
voltage of 12V. Therefore, this module uses a AIC1896 current
mode step up DC-DC Converter to provide the requisite voltage to
the LED string lights. The LED string light is 5 meters in length and

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has 50 RGB LEDs on it connected equidistant to one another. You
can use these to dress a Christmas tree, light your party or to
decorate your room.
[https://www.seeedstudio.com/Grove-LED-String-Light-p-2324.html]
Features
Used in conjunction with LED string lights
LED String lights of 5 meters length included with the pack
50 RGB LEDs connected at equal distances along the entire
length of 5 meters give a colorful appearance
JST 2.0 Interface used to connect the LED String lights with the
driver module
Uses Standard 4-pin Grove Cables [/Grove_System/#grove-
cables] to connect to other Grove [/Grove_System/] modules
Interface Function

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① JST 2.0 interface: Used to connect to LED String Lights
② Grove interface: HIGH on SIG (Pin 1) turns the LED String Lights
ON, LOW turns them OFF
Usage
Follow these steps to build a sample circuit using this module:
1. First connect the LED string lights to the Grove - LED String
Light module using the JST2.0 two-wire interface.
2. Connect the LED string lights module to the output side of your
circuit (to the right of the power module). On the input side of
the circuit, you may use a range of sensor based input modules
(Grove - Light Sensor [/Grove-Light_Sensor/], Grove - Sound
Sensor [/Grove-Sound_Sensor/], Grove - Button [/Grove-Button/]
or Grove - Slide Potentiometer [/Grove-Slide_Potentiometer/].
3. Power up the circuit.

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4. LED String lights light up when the input module supplies a
trigger:
5. If using with a light sensor connected directly to the input side
of the circuit, you should see the LED light up in bright light. If
you want the lights to light up in the dark, add a Grove - NOT
[/Grove-NOT] module between the light sensor and the power
module.
. If using with a sound sensor, you should see the LEDs light up
on detecting sound. Again, if you want to reverse the function,
or in other words, if you want that the lights should be ON at all
times except when there is a sound, add a Grove - NOT [/Grove-
NOT] module between the sound sensor and the power
module.
7. If using with a momentary switch like the one on the Grove -
Button [/Grove-Button/] module, simply press the button to light
up the string lights.
. If using with a slide potentiometer, move the slider from the
GND position to VCC and see the brightness of the lights
increase as the supplied voltage increases.
Below is an illustration of a Grove circuit built using the Grove - USB
Power [/Grove-Mixer_Pack_V2] power module:

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If you do not have the Grove - USB Power module, use the Grove -
DC Jack Power [/Grove-DC_Jack_Power] module instead to turn ON
the LED string lights.
Availability
This Grove [/Grove_System/] module is available as part of the
following Grove Kit Series [/Grove_System/#grove-starter-kit]:
Grove Mixer Pack V2 [/Grove-Mixer_Pack_V2]
Alternatively, it can be bought stand-alone at the Seeed Studio
Bazaar [https://www.seeedstudio.com/depot/Grove-LED-String-
Light-p-1821.html].
Schematic Online Viewer

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Resources
[Schematic PDF [https://les.seeedstudio.com/wiki/Grove-
LED_String_Light/res/Grove-LED_String_Light.pdf]]
[Eagle File [https://les.seeedstudio.com/wiki/Grove-
LED_String_Light/res/Grove-LED_String_Light.zip]]

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Tech Support
Please submit any technical issue into our forum
[https://forum.seeedstudio.com/].
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