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Siedle bus

angelnu·esphome·devices/pcb-siedle-bus/kicad/siedle-bus/siedle-bus.kicad_pcb

Siedle bus PCB layout, top view — open source ESP32 board by angelnu

About the Siedle bus PCB

Siedle bus is an open source ESP32 PCB design by angelnu, published on GitHub under the Apache-2.0 license. It is a 2-layer board measuring 43.5 × 37 mm, with 34 components from 23 distinct parts.

Its main chip is the ESP32-WROOM-32, from the ESP32 family. By type, the board carries 16 resistors, 5 transistors, 5 capacitors, 2 ICs, 2 switches and 2 diodes.

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

From the project

Settings for esphome

This PCB allows interacting with a Sidle In-Home bus and automatically trigger actions or connect it to home automation such as Home Assistant. It uses ESPHome as base firmware. The power comes from the bus so no additional power supply is needed.

- KiCad PCB project - - Simulation of Girator - - - - -

- 3D Printed box - FreeCad file - fix PCB with 3x M2 screws up to 7mm long - use up to 3x 3mm wide screws to fix to the wall - cover slack: 0.15 mm (enough that it holds without screws) - all parameters of the box are in the Settings Spreadsheet that you can change with FreeCAD if you need to…

Siedle bus, from the project README
From the project README

Main components on the Siedle bus

ESP32-WROOM-32

Siedle bus bill of materials (BOM)

34 components, 23 distinct parts.

QtyPartRefs
1
~
U1
1
ESP32-WROOM-32
U2
3
IRLML0030
Q1, Q4, Q5
2
BC807
Q2, Q3
1
Conn_01x02
J1
1
RESET
SW1
1
BOOT
SW2
1
Conn_01x04_Male
program_port1
2
US2MA
D1, D2
1
100n
C1
1
1F
C2
1
220uF
C3
1
10uF
C10
1
100nF
C11
5
10K
R1, R5, R6, R15, R16
2
47
R2, R4
1
120
R3
1
2K
R7
2
1K
R8, R9
1
12K
R10
Show 3 more
QtyPartRefs
1
200
R11
1
10
R12
2
0
R13, R14

Siedle bus design files

The KiCad project lives in the angelnu/esphome repository on GitHub; these links point at the commit this page was built from.

Siedle bus: common questions

What microcontroller does the Siedle bus use?

The Siedle bus is built around the ESP32-WROOM-32, from the ESP32 family.

How big is the Siedle bus PCB?

The Siedle bus measures 43.5 × 37 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the Siedle bus?

34 components, from 23 distinct parts. The full bill of materials is listed on this page.

Where can I download the Siedle bus design files?

From the angelnu/esphome repository on GitHub, which has the KiCad layout and the schematic; the links under Design files point to each one.

Can I use the Siedle bus design in my own project?

Yes, under the terms of its Apache-2.0 license, which angelnu chose for the repository.

Can I test firmware for the Siedle bus without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug ESP32 firmware against it before you order a PCB.

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