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Kicad board-2026-07-16-bluepill smartnode rs485

SimulatedFlow·kicad-board-2026-07-16-bluepill-smartnode-rs485

Kicad board-2026-07-16-bluepill smartnode rs485 layout, top view — open source board by SimulatedFlow

About the Kicad board-2026-07-16-bluepill smartnode rs485

Kicad board-2026-07-16-bluepill smartnode rs485 is an open source PCB design by SimulatedFlow, published on GitHub under the Custom license license. It is a 4-layer board measuring 100 × 80 mm, with 25 components from 19 distinct parts.

Other key parts include the Bluepill_L and Bluepill_R. By type, the board carries 2 ICs, 2 relays, 2 LEDs and 2 resistors.

It belongs with the dev boards & breakouts designs in this gallery.

From the project

STM32 Bluepill SmartNode - RS485 bus node carrier with 2 relays for Modbus / field bus setups. Hand-solderable THT, bare PCB. KiCad source files.

This repository contains the full design files of a commercial hardware board. It is source-available, not open source: read it, evaluate it, then buy a license to use it. See LICENSE.md (source-available, purchase required).

Get it / Buy: - Order on eBay (this board, bare PCB): https://www.ebay.de/itm/398222427962 - Product page (specs, photos, price): https://simulatedflow.teufel-engineering.com/platinen/2026-07-16-bluepill-smartnode-rs485/ - eBay store — all our boards and PCB art: https://www.ebay.de/usr/simula-9 - Merch shop (dev & gaming): https://simulatedflow.myspreadshop.de - Merch…

Main components on the Kicad board-2026-07-16-bluepill smartnode rs485

Bluepill_LBluepill_R

Kicad board-2026-07-16-bluepill smartnode rs485 bill of materials (BOM)

25 components, 19 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Bluepill_L
U1
1
Bluepill_R
U2
1
100uF/25V
C_BULK1
2
47uF/10V
C_BULK2, C_BULK3
4
100nF
C_DEC1, C_DEC2, C_DEC3, C_DEC4
1
1-Wire
J_DS18B20
1
I2C OLED
J_I2C
1
K1 COM/NO/NC
J_REL1
1
K2 COM/NO/NC
J_REL2
1
RS485 A/B/GND
J_RS485
2
SRD-05VDC
K1, K2
1
4.7k
R_PULL1
1
MAX485
U_MAX485
1
LD1117V33
U_REG3V3
1
L7805CV
U_REG5V
1
ULN2003A
U_ULN2003
1
RED
LED1
1
GRN
LED2
2
330R
R1, R2

Kicad board-2026-07-16-bluepill smartnode rs485 design files

The KiCad project lives in the SimulatedFlow/kicad-board-2026-07-16-bluepill-smartnode-rs485 repository on GitHub; these links point at the commit this page was built from.

Kicad board-2026-07-16-bluepill smartnode rs485: common questions

How big is the Kicad board-2026-07-16-bluepill smartnode rs485?

The Kicad board-2026-07-16-bluepill smartnode rs485 measures 100 × 80 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Kicad board-2026-07-16-bluepill smartnode rs485?

25 components, from 19 distinct parts, with part numbers taken from the project's own BOM. The full bill of materials is listed on this page.

Where can I download the Kicad board-2026-07-16-bluepill smartnode rs485 design files?

From the SimulatedFlow/kicad-board-2026-07-16-bluepill-smartnode-rs485 repository on GitHub, which has the KiCad layout, the schematic and the BOM; the links under Design files point to each one.

Can I use the Kicad board-2026-07-16-bluepill smartnode rs485 design in my own project?

It is published under Custom license, which limits how it may be reused; read the license before building on it.

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