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Kicad board-2026-07-18-bluepill relay carrier

SimulatedFlow·kicad-board-2026-07-18-bluepill-relay-carrier

Kicad board-2026-07-18-bluepill relay carrier layout, top view — open source board by SimulatedFlow

About the Kicad board-2026-07-18-bluepill relay carrier

Kicad board-2026-07-18-bluepill relay carrier is an open source PCB design by SimulatedFlow, published on GitHub under the Custom license license. It is a 4-layer board measuring 80 × 70 mm, with 21 components from 16 distinct parts.

Other key parts include the Bluepill_L and Bluepill_R. By type, the board carries 5 diodes, 4 connectors, 4 resistors, 2 ICs, 2 transistors and 2 capacitors.

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

From the project

STM32 Bluepill relay carrier board - single-channel relay baseboard with screw terminals. Hand-solderable THT. 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: - eBay store — all our boards and PCB art: https://www.ebay.de/usr/simula-9 - Merch shop (dev & gaming): https://simulatedflow.myspreadshop.de - Merch shop (Synthetica / EDM): https://synthetica.myspreadshop.de - Direct / invoice (Simulated Flow UG): simulatedflow@gmail.com

Main components on the Kicad board-2026-07-18-bluepill relay carrier

Bluepill_LBluepill_R

Kicad board-2026-07-18-bluepill relay carrier bill of materials (BOM)

21 components, 16 distinct parts — part numbers from the project's BOM.

QtyPartRefs
1
Bluepill_L
U1
1
Bluepill_R
U2
2
2N3904
Q1, Q2
1
5V_IN
J1
1
RY1_OUT
J2
1
RY2_OUT
J3
1
SENSOR
J4
2
SRD-05VDC
RY1, RY2
2
1N4007
D1, D2
1
1N5819
D3
1
LED_RED
D4
1
LED_GRN
D5
1
100uF
C1
1
100nF
C2
2
1k
R1, R2
2
330
R3, R4

Kicad board-2026-07-18-bluepill relay carrier design files

The KiCad project lives in the SimulatedFlow/kicad-board-2026-07-18-bluepill-relay-carrier repository on GitHub; these links point at the commit this page was built from.

Kicad board-2026-07-18-bluepill relay carrier: common questions

How big is the Kicad board-2026-07-18-bluepill relay carrier?

The Kicad board-2026-07-18-bluepill relay carrier measures 80 × 70 mm, has 4 copper layers and is 1.6 mm thick.

How many components are on the Kicad board-2026-07-18-bluepill relay carrier?

21 components, from 16 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-2026-07-18-bluepill relay carrier design files?

From the SimulatedFlow/kicad-board-2026-07-18-bluepill-relay-carrier 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-2026-07-18-bluepill relay carrier 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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