Lkf 4-button insert (back
slimcdk·lkf-smart-switch·circuits/1u-back-pcb/back-pcb.kicad_pcb
About the Lkf 4-button insert (back PCB
Lkf 4-button insert (back is an open source PCB design by slimcdk, published on GitHub. It is a 2-layer board measuring 29.5 × 38.3 mm, with 8 components from 8 distinct parts.
Other key parts include the MOC3021M. By type, the board carries 3 connectors, 2 resistors, 1 IC and 1 transistor.
It belongs with the iot & wireless designs in this gallery.
From the project
LK FUGA compatible ESP32 [ESPHome] smart switch
Feel free to support me and the development I do!

Main components on the Lkf 4-button insert (back
Lkf 4-button insert (back bill of materials (BOM)
8 components, 8 distinct parts.
| Qty | Part | Footprint | Refs |
|---|---|---|---|
| 1 | MOC3021M | DIP-6_W7.62mm_SMDSocket_SmallPads | U2 |
| 1 | BT136-500 | TO-252-2 | Q1 |
| 1 | Mains_Out_Conn | 2061-602_998-404 | J1 |
| 1 | Mains_In_Conn | 2061-602_998-404 | J2 |
| 1 | Inter_PCB_Conn | PinHeader_1x03_P2.54mm_Vertical | J3 |
| 1 | IRM-02-3.3S | Converter_ACDC_MeanWell_IRM-02-xx_SMD | PS1 |
| 1 | 330R | R_1210_3225Metric | R2 |
| 1 | 430R | R_0603_1608Metric | R3 |
Lkf 4-button insert (back design files
The KiCad project lives in the slimcdk/lkf-smart-switch repository on GitHub; these links point at the commit this page was built from.
Lkf 4-button insert (back: common questions
How big is the Lkf 4-button insert (back PCB?
The Lkf 4-button insert (back measures 29.5 × 38.3 mm, has 2 copper layers and is 1.6 mm thick.
How many components are on the Lkf 4-button insert (back?
8 components, from 8 distinct parts. The full bill of materials is listed on this page.
Where can I download the Lkf 4-button insert (back design files?
From the slimcdk/lkf-smart-switch repository on GitHub, which has the KiCad layout; the links under Design files point to each one.
Can I use the Lkf 4-button insert (back design in my own project?
The repository has no license, so all rights stay with slimcdk. Use it as a reference, and ask the author before reusing the design.
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