Fun Insect Killer Lamp

  
Fun Insect-Killing Lamp
Video Introduction
- Bilibili
https://www.bilibili.com/video/BV1kEVterEqU/?buvid=XU7C31C7636B8702FC465B5ADBD3EED440AA5&is_story_h5=false&mid=rsyTAYQE5XsfjVB8XKDu8X8FTQ%2FSZMtL1rElX6M3iMo%3D&plat_id=240&share_from=ugc&sh are_medium=android&share_plat=android&share_source=WEIXIN&share_tag=s_i&spmid=dt.space-dt.0.0×tamp=1718412921&unique_k=9CnNuwZ&up_id=3546693446404807&share_source=weixin During
the design process
, I tried and adjusted several schemes, but I couldn't achieve a satisfactory result. Ultimately, I decided to use the YX8184 as the main control chip. This chip is specifically designed for solar lawn lights, integrating an LED constant current drive control circuit and a lithium-ion battery charging protection circuit, ensuring the product's stable and efficient operation. It's particularly worth mentioning that the YX8184 boasts a conversion efficiency of up to 95%, greatly reducing the power requirements of the solar panel and improving overall performance. My fun insect-killing lamp cleverly utilizes green, blue, and purple insect-attracting lights. By controlling the ball bearings to enter different openings, different combinations of LED beads create varying on/off effects, providing users with a rich visual experience. Considering its application scenarios for summer nights spent relaxing or camping, we ensured the light remained constantly on in dark environments and incorporated light-transmitting holes on the PCB board, allowing users to clearly observe the ball bearings' movement. Furthermore, to make the insecticidal lamp more practical, we were inspired by the Water Cube, designing the outer shell in a color-changing bubble shape. The transparent printed part of the ball bearing control surface is shaped like a water droplet, and swirling patterns were added to the edges of the PCB board openings, adding a touch of liveliness and fun. When insecticidal effects are needed, simply place the lamp on the water surface. Insects attracted by the light and flying around it will inadvertently fall into the water, achieving the desired insecticidal effect. Different colored lights attract different types of pests, providing users with a fun and practical outdoor experience. If you are also interested in this product, why not try it yourself and experience its fun and convenience?
Circuit Working Principle:

Initial State:


LX is connected to pin 1 of YX8184. When the solar panel detects nighttime, pin 1 of YX8184 is turned on and at a low potential. When LX is at a low potential, MOSFET Q2 is turned on through resistor R3.
Similarly, MOSFET Q4 is turned on through resistor R5.
The conduction of Q2 and Q4 causes the purple LED to light up.


Ball Contact G2 Hole:


G1, G2, and G3 are the holes for ball contact. Each hole has two semi-circular pads, pad 1 and pad 2 (the pads have no gap with the edge of the hole). The ball is a 9mm diameter steel ball.
When the ball contacts pads 1 and 2 of the G2 hole, the resistance between these two pads (resistance may exist even if the contact is not ideal) is short-circuited.
This causes the gate voltage of Q3 to decrease. When the gate voltage is below a certain threshold, Q3 turns on.
Since the on-state voltage drop of MOSFET (Q3) is very low, the gate voltage of Q4 is approximately equal to its source voltage, which makes Q4 turn off (not conduct).
The cutoff of Q4 causes the purple LED to turn off, while the blue LED connected to the drain of Q3 lights up.

Note:
During lamp housing printing, the system may display multiple instances of wall thickness below 0.8 mm, indicating a risk. Choose to accept this risk.