HardLabs

MiniVersion

gert-lauritsen·Loftrel-Round·MiniVersion/MiniVersion.kicad_pcb

MiniVersion PCB layout, top view — open source ESP8266 board by gert-lauritsen

About the MiniVersion PCB

MiniVersion is an open source ESP8266 PCB design by gert-lauritsen, published on GitHub. It is a 2-layer board measuring 56 × 27 mm, with 24 components from 14 distinct parts.

Its main chip is the ESP-12E, from the ESP8266 family. Other key parts include the LTV-355T and VTX-214-003-203. By type, the board carries 11 resistors, 4 connectors, 3 ICs, 3 capacitors, 2 diodes and 1 fuse.

It belongs with the iot & wireless designs in this gallery.

From the project

Rundt relæ til loftmontage

Round ceiling-mounted relay module with ESP8266/Home Assistant integration, AC sense input, relay output, KiCad PCB files, LTspice simulation files, Gerber production files, interactive BOM, and 3D-printable enclosure files.

Mini version is for buildin. It does the same, just in a smaller version.

Loftrelæ Round is designed as a compact round relay module for ceiling installation. It is intended to fit into a round ceiling bracket or ceiling-mounted housing.

MiniVersion, from the project README
From the project README

Main components on the MiniVersion

LTV-355TVTX-214-003-203ESP-12E

MiniVersion bill of materials (BOM)

24 components, 14 distinct parts.

QtyPartRefs
1
LTV-355T
U2
1
VTX-214-003-203
U3
1
ESP-12E
U4
1
PowerIn
J1
2
Conn_01x03
J2, J3
1
Program
J4
1
8A
F1
2
D
D2, D3
2
1uF
C3, C4
1
2u2
C5
2
100k
R1, R8
1
1M
R2
6
10k
R3, R4, R5, R6, R7, R9
2
100k
R11, R12

MiniVersion design files

The KiCad project lives in the gert-lauritsen/Loftrel-Round repository on GitHub; these links point at the commit this page was built from.

MiniVersion: common questions

What microcontroller does the MiniVersion use?

The MiniVersion is built around the ESP-12E, from the ESP8266 family.

How big is the MiniVersion PCB?

The MiniVersion measures 56 × 27 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the MiniVersion?

24 components, from 14 distinct parts. The full bill of materials is listed on this page.

Where can I download the MiniVersion design files?

From the gert-lauritsen/Loftrel-Round repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the MiniVersion design in my own project?

The repository has no license, so all rights stay with gert-lauritsen. Use it as a reference, and ask the author before reusing the design.

Can I test firmware for the MiniVersion without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP8266 firmware against it before you order a PCB.

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