Capacitive touch dimmer dimmer switch module PWM control board constant voltage LED stepless dimming module

Features
Touch dimming module can realize touch switch control and brightness adjustment of LED lights. Has the following functional characteristics and advantages:

1. The brightness of the light can be adjusted freely according to the needs, the selection range is wide, and the operation is simple and convenient.

2. The touch function can be realized under the condition of medium (such as glass, acrylic, plastic, ceramic, etc.) isolation and protection, with high safety.

3. Wide application voltage range, can be arbitrarily selected between 2.4 ~ 4.5V.

4. Simple application circuit, few peripheral devices, easy processing and low cost.

5. Good anti-power interference and mobile phone interference. EFT can reach more than ± 2KV; in the case of close range and multi-angle mobile phone interference,

Touch response sensitivity and reliability are not affected.

      6. Installation: It is not necessary to directly contact the copper foil, and it can be dimmed through acrylic glass or plastic over 3mm.

  7. Uses: It can control LED modules, lights and other products. Suitable for indoor table lamp, LED lighting dimming, DIY car light dimming and modification.

  8. Function: single-line touch, using the capacitive touch principle, sensitive induction is within reach. The default is the LED touch stepless dimming function with switch function, dimming function, and brightness memory dimming. It slowly turns on when the light is turned on, and gradually turns off when the light is turned off, effectively avoiding eye irritation.

  9. Dimming mode: stepless PWM dimming

  10. Wiring method: (VCC, GND) in the PCB is the power input, (LED +, LED-) is connected to the positive and negative levels of the LED light (fingerprint) is connected to the touch area, and can also be led out. Later, we recommend using a small copper sheet as the sensing area. The copper sheet area is recommended to be about 2x3cm. The copper foil module on the board sticks the copper foil side to the shell side.

   11. How to use

   a) When the touch is touched (the touch duration is less than 550ms), the lighting control can be realized. Click and touch once, the light is on; click and touch again, the light is off. The initial brightness of the light is fixed at 90% of the full brightness.

   b) When you press and hold the touch (touch duration is greater than 550ms), stepless brightness adjustment of the light can be realized. Touch and hold once, the light brightness gradually increases. When you release it, the light brightness stops at the brightness corresponding to the moment of release. If you press and hold for more than 3 seconds, the light brightness will not change after reaching the maximum brightness; The light brightness gradually decreases. When the light is released, the light brightness stops at the corresponding brightness at the moment of release. If you press and hold for more than 3 seconds, the light brightness will not change after reaching the minimum brightness
Into. This cycle.

   12. debugging tips

   If a false trigger occurs during debugging or does not trigger, it may be caused by the following reasons:

   a) Touch line is too thick

   b) Touch line is too long

   c) The copper skin is not large enough

   d) Interference near the switching power supply

   e) Touch parameter C1 is unreasonable

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