HardLabs

1Wire-Blank

InfernoEmbedded·onewire-softdevice·devices/Template/1Wire-Blank.kicad_pcb

1Wire-Blank PCB layout, top view — open source STM32 board by InfernoEmbedded

About the 1Wire-Blank PCB

1Wire-Blank is an open source STM32 PCB design by InfernoEmbedded, published on GitHub. It is a 2-layer board measuring 99.8 × 99.8 mm, with 35 components from 14 distinct parts.

Its main chip is the STM32F030R8, from the STM32 family. Other key parts include the LP2950. By type, the board carries 16 transistors, 11 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-Blank

LP2950STM32F030R8

1Wire-Blank bill of materials (BOM)

35 components, 14 distinct parts.

QtyPartRefs
1
LP2950
U1
1
STM32F030R8
U2
16
IRLZ44NS
Q1, Q2, Q3, Q4, Q5, Q6, Q7, Q8 +8
1
BARREL_JACK
CON1
2
RJ45
J1, J2
1
JACK_STEREO
J3
1
CONN_02X05
P1
4
CONN_01X05
P2, P3, P5, P7
1
DC_IN
P4
1
CONN_01X05
P6
1
100uF
C1
1
4.7uF
C2
3
100nF
C3, C4, C5
1
33R
R1

1Wire-Blank 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-Blank: common questions

What microcontroller does the 1Wire-Blank use?

The 1Wire-Blank is built around the STM32F030R8, from the STM32 family.

How big is the 1Wire-Blank PCB?

The 1Wire-Blank measures 99.8 × 99.8 mm, has 2 copper layers and is 1.6 mm thick.

How many components are on the 1Wire-Blank?

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

Where can I download the 1Wire-Blank 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-Blank 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-Blank 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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