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1Wire So Many Switches

InfernoEmbedded·onewire-softdevice·devices/SoManySwitches/1Wire-SoManySwitches.kicad_pcb

1Wire So Many Switches PCB layout, top view — open source STM32 board by InfernoEmbedded

About the 1Wire So Many Switches PCB

1Wire So Many Switches is an open source STM32 PCB design by InfernoEmbedded, published on GitHub. It is a 2-layer board measuring 192.9 × 41.3 mm, with 20 components from 9 distinct parts.

Its main chip is the STM32F030R8, from the STM32 family. Other key parts include the LP2950. By type, the board carries 12 connectors, 5 capacitors, 2 ICs and 1 resistor.

It belongs with the sensors designs in this gallery.

From the project

Software, Firmware & Documentation is licensed under GPLv3

Software, Firmware & Documentation is licensed under GPLv3

The devices directory contains schematics, PCBs & firmware for the client devices.

Inferno Embedded commands allow the device to be rebooted into the bootloader so that they can be updated. The device can also be forced to remain in bootloader mode by shorting SWDAT on the SWD header to GND with a jumper.

Main components on the 1Wire So Many Switches

LP2950STM32F030R8

1Wire So Many Switches bill of materials (BOM)

20 components, 9 distinct parts.

QtyPartRefs
1
LP2950
U1
1
STM32F030R8
U2
10
RJ45
J1, J2, J3, J4, J5, J6, J7, J8 +2
1
CONN_02X05
P1
1
CONN_01X05
P6
1
100uF
C1
1
4.7uF
C2
3
100nF
C3, C4, C5
1
10K
R1

1Wire So Many Switches design files

The KiCad project lives in the InfernoEmbedded/onewire-softdevice repository on GitHub; these links point at the commit this page was built from.

1Wire So Many Switches: common questions

What microcontroller does the 1Wire So Many Switches use?

The 1Wire So Many Switches is built around the STM32F030R8, from the STM32 family.

How big is the 1Wire So Many Switches PCB?

The 1Wire So Many Switches measures 192.9 × 41.3 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 1Wire So Many Switches?

20 components, from 9 distinct parts. The full bill of materials is listed on this page.

Where can I download the 1Wire So Many Switches design files?

From the InfernoEmbedded/onewire-softdevice repository on GitHub, which has the KiCad layout; the links under Design files point to each one.

Can I use the 1Wire So Many Switches design in my own project?

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

Can I test firmware for the 1Wire So Many Switches without the hardware?

Yes. HardLabs builds a simulation of the board from its netlist and BOM, so you can run and debug STM32 firmware against it before you order a PCB.

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