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"Fa Fa" LED, a beautiful lantern

 
Overview

This is a super simple circuit for a beautiful flower-shaped lamp , and an ultra-low-cost touch-controlled lamp.
Spring is almost over, so let's make a flower lamp to catch the last days of spring!
 
The circuit is very simple, using the SGL8022W chip for stepless touch control. Of course, you can also use the JL7022WE chip, but the JL7022WE only has three dimming levels and cannot provide stepless dimming, but it's cheaper. The circuit diagrams for both chips are interchangeable.
 
Important Note:
Although the circuit is simple, the construction process is relatively difficult (resin application is really, really hard). The lamp is made by sealing dried flowers in resin, but as a beginner, I made many mistakes, directly causing the lamp to be unusable. I only succeeded on the third try.
Here, I'll share my experience to help you avoid these pitfalls.
1. The PCB board should be tightly attached to the mold. If the soldered TYPE_C pins are pressing against the mold, you can cut an opening in the mold to facilitate placing the PCB board.
 
 
2. Because dried flowers are very light, the glue should be applied in layers; otherwise, the flowers will all float.
3. Try to change the TYPE_C to 16P. 2P connectors have gaps at the interface, and glue will flow in during application. The solution is to insert a male connector before applying glue, but this will make it difficult to remove (sob sob).
 
These are the main points to note. Below are the glue and other connecting
 
resin (100g). First order ¥1.7 with free shipping
[Taobao] https://m.tb.cn/h.g0oz7ypahFmwCkc?tk=hYbfWrptBiz MF1643 "New Love High Transparency AB Glue Crystal Epoxy Resin DIY Material Kit Set Quick-Drying Specimen Mold Epoxy Resin" Click the link to open directly or search on Taobao.
100g is enough, you can also prepare more
 
molds (8cm*2cm*2cm). ¥6 including shipping.
[Taobao] https://m.tb.cn/h.g0oz7ypahFmwCkc?tk=hYbfWrptBiz MF1643 "New Love High Transparency AB Glue Crystal Epoxy Resin DIY Material Kit Set Quick-Drying Specimen Mold Epoxy Resin" Click the link to open directly or search on Taobao.
 
Touch Chip (JL7022WE) ¥3.99 with free shipping.
[Taobao] https://m.tb.cn/h.g0LZx5RXa9QgnbJ?tk=AEKlWrpEl64 CZ3458 "Three-Level Dimming/Stepless Adjustment Touch JL7022WE SGL8022 Solution Chip Touch Solution Development" Click the link to open directly or search on Taobao.
 
LED ¥2.78 with free shipping
[Taobao] https://m.tb.cn/h.g0L1aiy1zLnLacq?tk=OmpcWrpD3r9CZ0001 "0.2W 2835 SMD LED beads, 3528 cool white/warm white light emitting diodes, 20-22LM (50 pieces)" Click the link to open directly or search on Taobao.
You can refer to the BOM (Bill of Materials) table to purchase LED and other electronic components.
 
 
参考设计图片
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Update:2026-03-23 23:23:46

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